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Transformers(Number of phases/winding:Single-phase/single-winding)

A transformer is a device that changes the voltage, also called a power transformer. Performs the step-down and step-up of AC voltage, and makes adjustments necessary for use in electronic devices. The transformer has a structure in which a primary coil and a secondary coil are wound around an iron core. Depending on the position of the iron core and the coil, it is divided into an inner iron type where the coil covers the iron core and an outer iron type where the iron core is outside the coil. Wiring methods are classified into two types: single-phase, which is a 100 V power supply used in offices, and three-phase, which is a 200 V power supply that sends a large amount of power. The winding of the coil is usually compound wound in which the primary and secondary sides are insulated, but there are also smaller auto transformers. There are also types that can be connected with the cover attached, types that can be used overseas and in Japan, portable types that are suitable for on-site construction with different power and voltage, etc.
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    Single-Phase Single Winding Transformer

    Single-Phase Single Winding Transformer

    BUMHAN

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    460-440-420-380-0 0.075 ~ 2 220-110-0 Single-phase/single-winding - - 80 ~ 156 - - - 80 ~ 156 82 ~ 162
    From: 1,042,904 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Single-Phase Single-Winding Transformer AD21 Series

    Single-Phase Single-Winding Transformer AD21 Series

    TOYOZUMI

    Here is the 200V switching to 100V step-down transformer. Insulation between input and output is unneeded. Therefore it is best for customers who want to decrease the space control panel is taking.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    240 0.05 ~ 5 115 Single-phase/single-winding A type / B Type Screw terminal block 71 ~ 172 NA NA - 68 ~ 178 86 ~ 186
    From: 1,221,038 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Industrial Transformer _Transformer_Single-Phase Single Winding (WYAU-DW Series)

    Industrial Transformer _Transformer_Single-Phase Single Winding (WYAU-DW Series)

    WOONYOUNG

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    0-110-220-380-440 ~ 0-110-220-380-420-440-460 0.05 ~ 3 0-110-220-380-440 ~ 0-110-220-380-420-440-460 Single-phase/single-winding - Screw terminal block 77 ~ 188 - NA - 79 ~ 185 61 ~ 157
    From: 843,773 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    SO21 Series Single-Winding Transformer

    SO21 Series Single-Winding Transformer

    SWALLOW ELECTRIC

    SO21 series. Terminal block (up-screw) cover which has become one with protection cover. Work time is sharply shortened than other brand because wiring is available without screw-off.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC200-220 0.05 ~ 15 AC100-110 Single-phase/single-winding A type / E Type / B Type Up screw type terminal block / Other 92 ~ 380 NA NA - 77 ~ 260 88 ~ 270
    From: 970,710 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Power Transformer For Use In Japan And Overseas, AG-N Series

    Power Transformer For Use In Japan And Overseas, AG-N Series

    SWALLOW ELECTRIC

    AG-N series, overseas product can be used in Japan. In output side there attached a socket for 6 different voltages.[Features]· Attached by multi socket for world electronic products.· Japanese product can be used in overseas and overseas product can be used in Japan.· Can be used in different countries with different voltage ( with switch for input voltage).· Output socket: Flat head pin (A-2), round pin (C-2), common/BF/O.· Suitable electronic products · AV machines · Personal computers · Printers · TVs · Electronic mats · Dish dryers · Refrigerator · Kotatsu· Rice cookers · Hot plates · Microwaves, etc.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 1 ~ 1.5 AC100-110-120-200-220-240 Single-phase/single-winding - - 190 NA Available - 170 183
    From: 7,222,559 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer SR Series

    Transformer SR Series

    AIHARA

    Single phase autotransformer / lug terminal / P-type terminal block primary voltage 200V 220V secondary voltage 100V 110V

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    0-200 0.05 0-100 Single-phase/single-winding A type Other 60 NA NA - 70 58
    From: 546,365 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer AVR-A Series AC Constant Voltage Power Supply Unit

    Transformer AVR-A Series AC Constant Voltage Power Supply Unit

    SWALLOW ELECTRIC

    AVR-A series· 100V slide stabilized power supply.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 1 ~ 2 AC100 Single-phase/single-winding - - 225 ~ 300 NA Available - 145 ~ 210 150 ~ 250
    From: 11,832,485 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    MOUSE Series, Transformer For Use Overseas

    MOUSE Series, Transformer For Use Overseas

    SWALLOW ELECTRIC

    MOUSE series, lightest travel transformer. With weight of 290 g, it can easily charge by game machine or mobile while transporting.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC110 to 130 ~ AC220 to 240 0.02 ~ 0.06 AC100 Single-phase/single-winding - - 39 NA Available - 77 54
    From: 858,287 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer RTB Series

    Transformer RTB Series

    SWALLOW ELECTRIC

    RTB series, transformer with mobile plug and socket. Can be used in temporary sites with different voltages. Transformer with built-in toroidal is small and light.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC200 2 ~ 3 AC100-115 Single-phase/single-winding B Type - 220 ~ 280 NA Available - 120 ~ 135 200 ~ 230
    From: 9,199,197 VND
    Days to Ship: Số ngày giao hàng: 21 Day(s) or more
    day to ship 21 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer-Dry-Type Transformer (Single-phase Single-winding WB, WO Type)

    Transformer-Dry-Type Transformer (Single-phase Single-winding WB, WO Type)

    WOONYOUNG

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    0-110-220-380-440 0.01 ~ 0.02 0-110-220-380-440 Single-phase/single-winding - Screw terminal block 44 ~ 52 - NA - 70 ~ 85 38 ~ 44
    From: 449,182 VND
    Days to Ship: Số ngày giao hàng: 5 Day(s)
    day to ship 5 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Transformer NSR Series

    Transformer NSR Series

    AIHARA

    Single phase transformer / P-type terminal block, primary voltage 200V 220V 240V secondary voltage 100V 115V

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    200 0.01 ~ 0.5 100 Single-phase/single-winding A type Screw terminal block / Other 43 ~ 120 NA NA - 50 ~ 120 44 ~ 120
    From: 360,823 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    DP Series, Transformer With Case

    DP Series, Transformer With Case

    SWALLOW ELECTRIC

    DP series, transformer attached with plug and outlet

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC220 0.1 AC100 Single-phase/single-winding A type - 69 NA Available - 81 77
    From: 1,197,738 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Single-phase Auto Power Transformer, SOK21 Series

    Single-phase Auto Power Transformer, SOK21 Series

    SWALLOW ELECTRIC

    SOK21 series. Terminal block (up-screw) cover which has become one with protection cover. Work time is sharply shortened than other brand because wiring is available without screw-off.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC200-220 0.1 ~ 15 AC100-110 Single-phase/single-winding A type / E Type / B Type Up screw type terminal block / Other 150 ~ 450 NA Available - 180 ~ 360 135 ~ 500
    From: 2,305,750 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    SU Series Transformer for Domestic / Overseas Use

    SU Series Transformer for Domestic / Overseas Use

    SWALLOW ELECTRIC

    SU series. Japanese product can be used overseas and overseas product can be used in Japan. Multi-type transformer.

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100-120-200-220-240 ~ AC100-110-120-200-220-230-240 0.55 ~ 2 AC100-120-200-220-240 ~ AC100-110-120-200-220-230-240 Single-phase/single-winding B Type - 160 ~ 210 NA Available - 160 ~ 180 185 ~ 240
    From: 4,856,809 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Portable / Case-Included Step-Up Transformer, CU-S Series

    Portable / Case-Included Step-Up Transformer, CU-S Series

    TOYOZUMI

    When power voltage at 100V, it is convenient for using equipments of 110V, 115 to 120V, 220V, 230 to 240V. It is portable, which is perfect for using it while placing it temporarily.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    100 0.6 ~ 1 110 ~ 235 Single-phase/single-winding B Type Other 147 ~ 180 NA Available - 94 ~ 144 149 ~ 188
    From: 5,068,679 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Portable Case Included, Step-Down Transformer, KS Series

    Portable Case Included, Step-Down Transformer, KS Series

    TOYOZUMI

    When power voltage at 200 V, it is convenient for using equipments of 100 V. It is portable, which is perfect for using it while placing it temporarily.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    200 0.6 ~ 1.5 100 Single-phase/single-winding B Type Other 164 ~ 180 NA Available - 134 ~ 154 178 ~ 200
    From: 7,619,119 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer-Dry-Type Transformer (Single-phase Single-winding WMT, WT Type)

    Transformer-Dry-Type Transformer (Single-phase Single-winding WMT, WT Type)

    WOONYOUNG

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    0-100-110-200-220 ~ 0-100-110-200-220-240 0.05 ~ 2 0-100-110-200-220 ~ 0-100-110-200-220-240 Single-phase/single-winding - Screw terminal block 57 ~ 114 - NA - 42 ~ 96 37 ~ 100.5
    From: 843,773 VND
    Days to Ship: Số ngày giao hàng: 5 Day(s)
    day to ship 5 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Singe-Phase Single-Winding Transformer, STP-A series

    Singe-Phase Single-Winding Transformer, STP-A series

    KAMADASIGNAL

    [Attention]· Picture is representative image.· Made by Kamata signal machine· Capacity is series of 100VA to 10KVA.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC200-220 0.1 ~ 0.5 AC100-110 Single-phase/single-winding A type Screw terminal block 87 ~ 109 NA NA - 79 ~ 106 88 ~ 118
    From: 1,003,530 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer AU-A Series

    Transformer AU-A Series

    SWALLOW ELECTRIC

    AU-A series. Transformer that can be used on overseas' electronics 120V while traveling in Japan.[Features]· Overseas product can be used in Japan.· Protection function of non-fuse breaker· Suitable electronic products · AV machine · Personal computers · Printers · TVs· Electronic mats · Dish dryers · Refrigerators · Kotatsu· Rice cookers · Hot plates · Microwaves, etc.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 0.5 AC120 Single-phase/single-winding - - 150 NA Available - 110 140
    From: 3,389,281 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Power Transformer For Use Overseas, PAL-A Series

    Power Transformer For Use Overseas, PAL-A Series

    SWALLOW ELECTRIC

    PAL-E series, transformers made 100V electronics can be used in different countries of 110 to 130V during travel.

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC110 to 130 0.35 ~ 0.5 AC100 Single-phase/single-winding - - 150 NA Available - 110 140
    From: 3,228,733 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    PAL-E Series Transformer for Overseas Use

    PAL-E Series Transformer for Overseas Use

    SWALLOW ELECTRIC

    PAL-E series, transformers made 100V electronics can be used in different countries of 220 to 230V during travel.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC220 to 230 ~ AC220 to 240 0.12 ~ 0.35 AC100 Single-phase/single-winding - - 52 ~ 150 NA Available - 75 ~ 110 90 ~ 140
    From: 1,834,616 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Power Transformer For Use Overseas, PAL-IP Series

    Power Transformer For Use Overseas, PAL-IP Series

    SWALLOW ELECTRIC

    PAL-IP series, transformer made electronics of 100V available in different countries of 240V during travel. More compact and lighter than other brand because we used toroidal core.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC240 0.5 ~ 1.5 AC100 Single-phase/single-winding - - 170 ~ 180 NA Available - 70 ~ 88 120 ~ 145
    From: 4,454,124 VND
    Days to Ship: Số ngày giao hàng: 14 Day(s) or more
    day to ship 14 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer PAL-UK Series

    Transformer PAL-UK Series

    SWALLOW ELECTRIC

    PAL-UK series. Transformer that can be used on overseas' electronics 240V while traveling in Japan. More compact and lighter than other brand because we used toroidal core.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 0.5 ~ 1.5 AC240 Single-phase/single-winding - - 170 ~ 180 NA Available - 70 ~ 88 120 ~ 145
    From: 4,454,124 VND
    Days to Ship: Số ngày giao hàng: 14 Day(s) or more
    day to ship 14 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Portable Transformer, TBN Series

    Portable Transformer, TBN Series

    SWALLOW ELECTRIC

    TBN series, transformer with mobile plug and socket. Can be used in temporary sites with different voltages.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100-200 2 ~ 3 AC100-115-200 Single-phase/single-winding B Type - 265 ~ 295 NA Available - 155 ~ 175 225 ~ 240
    From: 11,652,846 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    UP Series Portable Transformer

    UP Series Portable Transformer

    SWALLOW ELECTRIC

    UP series, transformer with mobile plug and socket. Can be used in temporary sites with different voltages. Transformer with built-in toroidal is small and light.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 1 ~ 3 AC200 Single-phase/single-winding B Type - 200 ~ 230 NA Available - 120 ~ 135 220 ~ 280
    From: 7,088,138 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    AG-D Series, In Japan And Overseas Type Transformer

    AG-D Series, In Japan And Overseas Type Transformer

    SWALLOW ELECTRIC

    AG-D series. Japanese product can be used overseas and overseas product can be used in Japan. Multi-type transformer with voltage of 6 inputs and 6 outputs.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100-110-120-200-220-240 1 ~ 1.5 AC100-110-120-200-220-240 Single-phase/single-winding - - 190 NA Available - 170 183
    From: 7,232,001 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    AU-AP Series

    AU-AP Series

    SWALLOW ELECTRIC

    AU-AP series. Transformer that can be used on overseas' electronics 120V while traveling in Japan.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 1 ~ 1.5 AC120 Single-phase/single-winding - - 195 NA Available - 130 135
    From: 3,993,013 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    PAL-AP Series

    PAL-AP Series

    SWALLOW ELECTRIC

    PAL-AP series, transformers made 100V electronics can be used in different countries of 110 to 130V during travel.

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC110 to 130 1 ~ 1.5 AC100 Single-phase/single-winding - - 195 NA Available - 130 135
    From: 3,993,013 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    PAL-EP Series Transformer for Overseas Use

    PAL-EP Series Transformer for Overseas Use

    SWALLOW ELECTRIC

    PAL-EP series, transformer made electronics of 100V available in different countries of 220 to 230V during travel. More compact and lighter than other brand because we used toroidal core.

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC220 to 230 0.51 ~ 1.5 AC100 Single-phase/single-winding - - 120 ~ 145 NA Available - 70 ~ 88 170 ~ 180
    From: 4,401,925 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    PAL Series, International Transformer (Operating Capacity 150 V, 350 V)

    PAL Series, International Transformer (Operating Capacity 150 V, 350 V)

    SWALLOW ELECTRIC

    PAL-E series, transformers made 100V electronics can be used in different countries of to 240V during travel.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC240 0.15 ~ 0.35 AC100 Single-phase/single-winding - - 120 ~ 150 NA Available - 90 ~ 110 90 ~ 140
    From: 2,534,141 VND
    Days to Ship: Số ngày giao hàng: 21 Day(s) or more
    day to ship 21 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    PAL-UE Series Transformer for Use in Japan

    PAL-UE Series Transformer for Use in Japan

    SWALLOW ELECTRIC

    PAL-UE series. Transformer that can be used on overseas' electronics 220 to 230V while traveling in Japan. More compact and lighter than other brand because we used toroidal core.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 0.51 ~ 1.5 AC220 to 230 Single-phase/single-winding - - 120 ~ 145 NA Available - 70 ~ 88 170 ~ 180
    From: 4,401,925 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer AC Constant Voltage Power Supply Unit, SVR-E Series

    Transformer AC Constant Voltage Power Supply Unit, SVR-E Series

    SWALLOW ELECTRIC

    SVR-E series. Thyristor stabilized power supply. input100/200V switch type, rapidly respond to voltage changes by switches. Efficient and high performance.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100-220 1 ~ 3 AC100 Single-phase/single-winding - - 380 ~ 500 NA Available - 210 ~ 250 230 ~ 250
    From: 20,016,413 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    SVR Series

    SVR Series

    SWALLOW ELECTRIC

    SVR series. Thyristor 100V stabilized power supply. Rapidly response to voltage changes. Efficient and high performance.

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC100 1 ~ 3 AC100 Single-phase/single-winding - - 250 ~ 320 NA Available - 145 ~ 180 180 ~ 230
    From: 22,470,904 VND
    Days to Ship: Số ngày giao hàng: 14 Day(s) or more
    day to ship 14 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    TB-D Series, Portable Transformer

    TB-D Series, Portable Transformer

    SWALLOW ELECTRIC

    TB-D series, transformer with mobile plug and socket. Can be used in temporary sites with different voltages.

    CAD :
    2D
    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    AC200 1 ~ 3 AC100-115 Single-phase/single-winding B Type - 265 ~ 295 NA Available - 155 ~ 175 225 ~ 240
    From: 6,239,391 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Single-Phase Single Winding Transformer

    Single-Phase Single Winding Transformer

    BUMHAN

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    230-220-210-0 0.075 ~ 2 110-110-0 Single-phase/single-winding - - 88 ~ 156 - - - 80 ~ 156 82 ~ 162
    From: 1,063,609 VND
    Days to Ship: Số ngày giao hàng: 11 Day(s)
    day to ship 11 Day(s)
  • You can add up to 6 items per a category to the compare list.

    Industrial Transformer Single-Phase Single Winding WYAU-DO Series

    Industrial Transformer Single-Phase Single Winding WYAU-DO Series

    WOONYOUNG

    Primary voltage(V) Capacity(kVA) Secondary voltage(V) Number of phases/winding Insulation type Input/output terminal shape Dimension vertical(mm) Shield presence With/without Case Representative Standard Dimension width(mm) Dimension depth(mm)
    0-100-110-200-220-240 0.02 ~ 0.05 0-100-110-200-220-240 Single-phase/single-winding - Screw terminal block 52 ~ 60 - NA - 85 ~ 95 44 ~ 55
    From: 564,421 VND
    Days to Ship: Số ngày giao hàng: 5 Day(s)
    day to ship 5 Day(s)
BrandNhãn hiệu
Product SeriesDòng sản phẩm
CADCAD
From
Days to ShipSố ngày giao hàng
Primary voltage(V)
Capacity(kVA)
Secondary voltage(V)
Number of phases/winding
Insulation type
Input/output terminal shape
Dimension vertical(mm)
Shield presence
With/without Case
Representative Standard
Dimension width(mm)
Dimension depth(mm)

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    Single-Phase Single Winding Transformer

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        Single-Phase Single-Winding Transformer AD21 Series

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            Industrial Transformer _Transformer_Single-Phase Single Winding (WYAU-DW Series)

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                SO21 Series Single-Winding Transformer

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                    Power Transformer For Use In Japan And Overseas, AG-N Series

                        You can add up to 6 items per a category to the compare list.

                        Transformer SR Series

                            You can add up to 6 items per a category to the compare list.

                            Transformer AVR-A Series AC Constant Voltage Power Supply Unit

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                                MOUSE Series, Transformer For Use Overseas

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                                    Transformer RTB Series

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                                        Transformer-Dry-Type Transformer (Single-phase Single-winding WB, WO Type)

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                                            Transformer NSR Series

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                                                DP Series, Transformer With Case

                                                    You can add up to 6 items per a category to the compare list.

                                                    Single-phase Auto Power Transformer, SOK21 Series

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                                                        SU Series Transformer for Domestic / Overseas Use

                                                            You can add up to 6 items per a category to the compare list.

                                                            Portable / Case-Included Step-Up Transformer, CU-S Series

                                                                You can add up to 6 items per a category to the compare list.

                                                                Portable Case Included, Step-Down Transformer, KS Series

                                                                    You can add up to 6 items per a category to the compare list.

                                                                    Transformer-Dry-Type Transformer (Single-phase Single-winding WMT, WT Type)

                                                                        You can add up to 6 items per a category to the compare list.

                                                                        Singe-Phase Single-Winding Transformer, STP-A series

                                                                            You can add up to 6 items per a category to the compare list.

                                                                            Transformer AU-A Series

                                                                                You can add up to 6 items per a category to the compare list.

                                                                                Power Transformer For Use Overseas, PAL-A Series

                                                                                    You can add up to 6 items per a category to the compare list.

                                                                                    PAL-E Series Transformer for Overseas Use

                                                                                        You can add up to 6 items per a category to the compare list.

                                                                                        Power Transformer For Use Overseas, PAL-IP Series

                                                                                            You can add up to 6 items per a category to the compare list.

                                                                                            Transformer PAL-UK Series

                                                                                                You can add up to 6 items per a category to the compare list.

                                                                                                Portable Transformer, TBN Series

                                                                                                    You can add up to 6 items per a category to the compare list.

                                                                                                    UP Series Portable Transformer

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                                                                                                        AG-D Series, In Japan And Overseas Type Transformer

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                                                                                                            AU-AP Series

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                                                                                                                PAL-AP Series

                                                                                                                    You can add up to 6 items per a category to the compare list.

                                                                                                                    PAL-EP Series Transformer for Overseas Use

                                                                                                                        You can add up to 6 items per a category to the compare list.

                                                                                                                        PAL Series, International Transformer (Operating Capacity 150 V, 350 V)

                                                                                                                            You can add up to 6 items per a category to the compare list.

                                                                                                                            PAL-UE Series Transformer for Use in Japan

                                                                                                                                You can add up to 6 items per a category to the compare list.

                                                                                                                                Transformer AC Constant Voltage Power Supply Unit, SVR-E Series

                                                                                                                                    You can add up to 6 items per a category to the compare list.

                                                                                                                                    SVR Series

                                                                                                                                        You can add up to 6 items per a category to the compare list.

                                                                                                                                        TB-D Series, Portable Transformer

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                                                                                                                                            Single-Phase Single Winding Transformer

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                                                                                                                                                Industrial Transformer Single-Phase Single Winding WYAU-DO Series
                                                                                                                                                  BrandNhãn hiệu

                                                                                                                                                  BUMHAN

                                                                                                                                                  TOYOZUMI

                                                                                                                                                  WOONYOUNG

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  AIHARA

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  WOONYOUNG

                                                                                                                                                  AIHARA

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  TOYOZUMI

                                                                                                                                                  TOYOZUMI

                                                                                                                                                  WOONYOUNG

                                                                                                                                                  KAMADASIGNAL

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  SWALLOW ELECTRIC

                                                                                                                                                  BUMHAN

                                                                                                                                                  WOONYOUNG

                                                                                                                                                  Product SeriesDòng sản phẩm

                                                                                                                                                  Single-Phase Single Winding Transformer

                                                                                                                                                  Single-Phase Single-Winding Transformer AD21 Series

                                                                                                                                                  Industrial Transformer _Transformer_Single-Phase Single Winding (WYAU-DW Series)

                                                                                                                                                  SO21 Series Single-Winding Transformer

                                                                                                                                                  Power Transformer For Use In Japan And Overseas, AG-N Series

                                                                                                                                                  Transformer SR Series

                                                                                                                                                  Transformer AVR-A Series AC Constant Voltage Power Supply Unit

                                                                                                                                                  MOUSE Series, Transformer For Use Overseas

                                                                                                                                                  Transformer RTB Series

                                                                                                                                                  Transformer-Dry-Type Transformer (Single-phase Single-winding WB, WO Type)

                                                                                                                                                  Transformer NSR Series

                                                                                                                                                  DP Series, Transformer With Case

                                                                                                                                                  Single-phase Auto Power Transformer, SOK21 Series

                                                                                                                                                  SU Series Transformer for Domestic / Overseas Use

                                                                                                                                                  Portable / Case-Included Step-Up Transformer, CU-S Series

                                                                                                                                                  Portable Case Included, Step-Down Transformer, KS Series

                                                                                                                                                  Transformer-Dry-Type Transformer (Single-phase Single-winding WMT, WT Type)

                                                                                                                                                  Singe-Phase Single-Winding Transformer, STP-A series

                                                                                                                                                  Transformer AU-A Series

                                                                                                                                                  Power Transformer For Use Overseas, PAL-A Series

                                                                                                                                                  PAL-E Series Transformer for Overseas Use

                                                                                                                                                  Power Transformer For Use Overseas, PAL-IP Series

                                                                                                                                                  Transformer PAL-UK Series

                                                                                                                                                  Portable Transformer, TBN Series

                                                                                                                                                  UP Series Portable Transformer

                                                                                                                                                  AG-D Series, In Japan And Overseas Type Transformer

                                                                                                                                                  AU-AP Series

                                                                                                                                                  PAL-AP Series

                                                                                                                                                  PAL-EP Series Transformer for Overseas Use

                                                                                                                                                  PAL Series, International Transformer (Operating Capacity 150 V, 350 V)

                                                                                                                                                  PAL-UE Series Transformer for Use in Japan

                                                                                                                                                  Transformer AC Constant Voltage Power Supply Unit, SVR-E Series

                                                                                                                                                  SVR Series

                                                                                                                                                  TB-D Series, Portable Transformer

                                                                                                                                                  Single-Phase Single Winding Transformer

                                                                                                                                                  Industrial Transformer Single-Phase Single Winding WYAU-DO Series

                                                                                                                                                  CADCAD
                                                                                                                                                  • 2D
                                                                                                                                                  • 2D
                                                                                                                                                  • 2D
                                                                                                                                                  • 2D
                                                                                                                                                  • 2D
                                                                                                                                                  • 2D
                                                                                                                                                  • 2D
                                                                                                                                                  From

                                                                                                                                                  1,042,904 VND

                                                                                                                                                  1,221,038 VND

                                                                                                                                                  843,773 VND

                                                                                                                                                  970,710 VND

                                                                                                                                                  7,222,559 VND

                                                                                                                                                  546,365 VND

                                                                                                                                                  11,832,485 VND

                                                                                                                                                  858,287 VND

                                                                                                                                                  9,199,197 VND

                                                                                                                                                  449,182 VND

                                                                                                                                                  360,823 VND

                                                                                                                                                  1,197,738 VND

                                                                                                                                                  2,305,750 VND

                                                                                                                                                  4,856,809 VND

                                                                                                                                                  5,068,679 VND

                                                                                                                                                  7,619,119 VND

                                                                                                                                                  843,773 VND

                                                                                                                                                  1,003,530 VND

                                                                                                                                                  3,389,281 VND

                                                                                                                                                  3,228,733 VND

                                                                                                                                                  1,834,616 VND

                                                                                                                                                  4,454,124 VND

                                                                                                                                                  4,454,124 VND

                                                                                                                                                  11,652,846 VND

                                                                                                                                                  7,088,138 VND

                                                                                                                                                  7,232,001 VND

                                                                                                                                                  3,993,013 VND

                                                                                                                                                  3,993,013 VND

                                                                                                                                                  4,401,925 VND

                                                                                                                                                  2,534,141 VND

                                                                                                                                                  4,401,925 VND

                                                                                                                                                  20,016,413 VND

                                                                                                                                                  22,470,904 VND

                                                                                                                                                  6,239,391 VND

                                                                                                                                                  1,063,609 VND

                                                                                                                                                  564,421 VND

                                                                                                                                                  Days to ShipSố ngày giao hàng 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 21 Day(s) or more 5 Day(s) 4 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 4 Day(s) or more 4 Day(s) or more 5 Day(s) 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 14 Day(s) or more 14 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 21 Day(s) or more 6 Day(s) or more 6 Day(s) or more 14 Day(s) or more 6 Day(s) or more 11 Day(s) 5 Day(s)
                                                                                                                                                  Primary voltage(V)460-440-420-380-02400-110-220-380-440 ~ 0-110-220-380-420-440-460AC200-220AC1000-200AC100AC110 to 130 ~ AC220 to 240AC2000-110-220-380-440200AC220AC200-220AC100-120-200-220-240 ~ AC100-110-120-200-220-230-2401002000-100-110-200-220 ~ 0-100-110-200-220-240AC200-220AC100AC110 to 130AC220 to 230 ~ AC220 to 240AC240AC100AC100-200AC100AC100-110-120-200-220-240AC100AC110 to 130AC220 to 230AC240AC100AC100-220AC100AC200230-220-210-00-100-110-200-220-240
                                                                                                                                                  Capacity(kVA)0.075 ~ 20.05 ~ 50.05 ~ 30.05 ~ 151 ~ 1.50.051 ~ 20.02 ~ 0.062 ~ 30.01 ~ 0.020.01 ~ 0.50.10.1 ~ 150.55 ~ 20.6 ~ 10.6 ~ 1.50.05 ~ 20.1 ~ 0.50.50.35 ~ 0.50.12 ~ 0.350.5 ~ 1.50.5 ~ 1.52 ~ 31 ~ 31 ~ 1.51 ~ 1.51 ~ 1.50.51 ~ 1.50.15 ~ 0.350.51 ~ 1.51 ~ 31 ~ 31 ~ 30.075 ~ 20.02 ~ 0.05
                                                                                                                                                  Secondary voltage(V)220-110-01150-110-220-380-440 ~ 0-110-220-380-420-440-460AC100-110AC100-110-120-200-220-2400-100AC100AC100AC100-1150-110-220-380-440100AC100AC100-110AC100-120-200-220-240 ~ AC100-110-120-200-220-230-240110 ~ 2351000-100-110-200-220 ~ 0-100-110-200-220-240AC100-110AC120AC100AC100AC100AC240AC100-115-200AC200AC100-110-120-200-220-240AC120AC100AC100AC100AC220 to 230AC100AC100AC100-115110-110-00-100-110-200-220-240
                                                                                                                                                  Number of phases/windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-windingSingle-phase/single-winding
                                                                                                                                                  Insulation type-A type / B Type-A type / E Type / B Type-A type--B Type-A typeA typeA type / E Type / B TypeB TypeB TypeB Type-A type-----B TypeB Type--------B Type--
                                                                                                                                                  Input/output terminal shape-Screw terminal blockScrew terminal blockUp screw type terminal block / Other-Other---Screw terminal blockScrew terminal block / Other-Up screw type terminal block / Other-OtherOtherScrew terminal blockScrew terminal block-----------------Screw terminal block
                                                                                                                                                  Dimension vertical(mm)80 ~ 15671 ~ 17277 ~ 18892 ~ 38019060225 ~ 30039220 ~ 28044 ~ 5243 ~ 12069150 ~ 450160 ~ 210147 ~ 180164 ~ 18057 ~ 11487 ~ 10915015052 ~ 150170 ~ 180170 ~ 180265 ~ 295200 ~ 230190195195120 ~ 145120 ~ 150120 ~ 145380 ~ 500250 ~ 320265 ~ 29588 ~ 15652 ~ 60
                                                                                                                                                  Shield presence-NA-NANANANANANA-NANANANANANA-NANANANANANANANANANANANANANANANANA--
                                                                                                                                                  With/without Case-NANANAAvailableNAAvailableAvailableAvailableNANAAvailableAvailableAvailableAvailableAvailableNANAAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailable-NA
                                                                                                                                                  Representative Standard------------------------------------
                                                                                                                                                  Dimension width(mm)80 ~ 15668 ~ 17879 ~ 18577 ~ 26017070145 ~ 21077120 ~ 13570 ~ 8550 ~ 12081180 ~ 360160 ~ 18094 ~ 144134 ~ 15442 ~ 9679 ~ 10611011075 ~ 11070 ~ 8870 ~ 88155 ~ 175120 ~ 13517013013070 ~ 8890 ~ 11070 ~ 88210 ~ 250145 ~ 180155 ~ 17580 ~ 15685 ~ 95
                                                                                                                                                  Dimension depth(mm)82 ~ 16286 ~ 18661 ~ 15788 ~ 27018358150 ~ 25054200 ~ 23038 ~ 4444 ~ 12077135 ~ 500185 ~ 240149 ~ 188178 ~ 20037 ~ 100.588 ~ 11814014090 ~ 140120 ~ 145120 ~ 145225 ~ 240220 ~ 280183135135170 ~ 18090 ~ 140170 ~ 180230 ~ 250180 ~ 230225 ~ 24082 ~ 16244 ~ 55

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                                                                                                                                                  Related Categories to TransformersDanh mục liên quan đến Transformers

                                                                                                                                                  FAQ Transformers

                                                                                                                                                  Question: What is different between 1phase transformers and 3phase transformers.
                                                                                                                                                  Answer: 1. In a single-phase transformer, the electricity is supplied through two wires called Line and neutral. In three phase transformers, the electricity is supplied through three wires (four wires if neutral wire is included).
                                                                                                                                                  2. The voltage of single-phase transformer supply is 230V whereas three-phase transformer supply is 415V.
                                                                                                                                                  3. The efficiency of a three-phase transformer is significantly higher than a single-phase supply and the power transfer capability is also more.
                                                                                                                                                  Question: How many types of transformers?
                                                                                                                                                  Answer: Type of transformer can be separated by different types of applications.
                                                                                                                                                  1. Transformer types based on core structure.
                                                                                                                                                     1.1) Iron core transformer
                                                                                                                                                     1.2) Shell core transformer
                                                                                                                                                     1.3) H-type core transformer
                                                                                                                                                  2. Transformer types based on electric system.
                                                                                                                                                     2.1) Single-phase transformer
                                                                                                                                                     2.2) Three-phase transformer
                                                                                                                                                  3. Transformer types based on voltage level.
                                                                                                                                                     3.1) Step-up transformer which is use for boost voltage up then transmit to secondary side.
                                                                                                                                                     3.2) Step-down transformer which is use for reducing voltage down then transmit to secondary side.
                                                                                                                                                     3.3) Isolation transformer which voltage at primary and secondary side are same. Typically, applicable for Laboratory which is need stable voltage and current.
                                                                                                                                                  Question: How is transformer maintenance method?
                                                                                                                                                  Answer: 1. Should install and using in low-humidity to prevent short circuit issue.
                                                                                                                                                  2. Installation place should be good for heat transfer.
                                                                                                                                                  3. Always keep cleaning heat transfer component.
                                                                                                                                                  4. Always keep inspection terminal and wire.
                                                                                                                                                  Question: Why transformer is necessary?
                                                                                                                                                  Answer: Transformers is necessary because each electric device need different level of voltage. So, we must use transformer to adjust the electrical voltage from power source to sub-unit. Such as, reduce voltage from high-power electric post to the building and transformer for reduce voltage level from electric source of building to each electrical home appliance as well.