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  • Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

Transformers(Input/output terminal shape:Screw terminal block)

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

    Transformer NYSB Series

    Transformer NYSB Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 380V 400V 420V 440V secondary voltage 200V 220V 240V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    380 0.05 ~ 3 200 Single-phase/Double-winding A type Screw terminal block 88 ~ 220 Available NA 88 ~ 153 99 ~ 235
    From: ₹ 4,760.76
    Days to Ship: 19 Day(s) or more
    day to ship 19 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer EP Series

    Transformer EP Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 200V 220V secondary voltage 100V 110V built-in self-holding thermal protector with shield (E).

    [Features]
    · To improve the security of electronic equipment, once the setting temperature for non-automatic recovery (bimetallic element) is reached, snap action (switch) is disconnected, and electronic grounding is in parallel. To avoid the heat inverted by bi-metal from the PTC heater's switch-on, the connection is disconnected till the power of transformer or electronic equipment is off.
    · Ceramics PTC (automatic temperature adjustment) built-in.
    · EN standards (a voltage maintenance type device for preventing excessive temperature rises).
    · Satisfies the requirement for holding a temperature of -20° at 250 VAC.
    · UL specifications with requirement of "0°C-keeping" is satisfied when 125/250Vac is applied.
    · Voltage range AC90V to 250V (exclusively for AC circuit)

    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 Dimension width(mm) Dimension depth(mm)
    200 0.3 ~ 1 100 Single-phase/Double-winding A type Screw terminal block 120 ~ 156 Available NA 120 ~ 153 120 ~ 175
    From: ₹ 10,654.93
    Days to Ship: 19 Day(s) or more
    day to ship 19 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Single-Phase Multiple-Winding Transformer, SD21 Series

    Single-Phase Multiple-Winding Transformer, SD21 Series

    TOYOZUMI

    Here is the 200V switching to 100V step-down transformer. For all equipment types P-S gap shield is attached. It is made to prevent power supply noise.

    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 Dimension width(mm) Dimension depth(mm)
    240 0.05 ~ 5 115 Single-phase/Double-winding A type / B Type Screw terminal block 80 ~ 224.5 Available NA 79 ~ 224 94 ~ 247
    From: ₹ 6,571.47
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer N42A Series

    Transformer N42A Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 420V 440V 460V 480V secondary voltage 100V 110V 115V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    420 0.05 ~ 3 100 Single-phase/Double-winding A type Screw terminal block 88 ~ 220 Available NA 88 ~ 153 99 ~ 235
    From: ₹ 5,021.95
    Days to Ship: 12 Day(s) or more
    day to ship 12 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 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: ₹ 4,390.93
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Single-Phase Multiple-Winding Transformer, LD21 Series

    Single-Phase Multiple-Winding Transformer, LD21 Series

    TOYOZUMI

    Step-down transformer for 200V switching to 100V. We have reached the low-cost goal while maintaining the quality of a Toyozumi production SD21 series. For all equipment types, gap shield is included in P-S to best prevent interference.

    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 Dimension width(mm) Dimension depth(mm)
    220 0.05 ~ 5 110 Single-phase/Double-winding E Type / F type Screw terminal block 81 ~ 209 Available NA 68 ~ 224 86 ~ 247
    From: ₹ 4,708.36
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • 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 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: ₹ 3,599.47
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer FRB Series

    Transformer FRB Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 200V 220V secondary voltage 24V 26V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    200 0.05 ~ 0.1 24 Single-phase/Double-winding A type Screw terminal block 88 ~ 96 Available NA 85 ~ 86 94 ~ 109
    From: ₹ 4,209.93
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer SPA Series

    Transformer SPA Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 100V 110V 120V secondary voltage 100V 110V 120V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    100 0.1 100 Single-phase/Double-winding A type Screw terminal block 107 Available NA 105 104
    From: ₹ 6,337.75
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer 4YSB Series

    Transformer 4YSB Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 420V 440V 460V 480V secondary voltage 200V 220V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    420 0.05 ~ 3 200 Single-phase/Double-winding A type Screw terminal block 88 ~ 220 Available NA 88 ~ 153 99 ~ 235
    From: ₹ 5,008.56
    Days to Ship: 15 Day(s) or more
    day to ship 15 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer N38A Series

    Transformer N38A Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 380V 400V 415V secondary voltage 100V 110V 115V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    380 0.05 ~ 2 100 Single-phase/Double-winding A type Screw terminal block 88 ~ 215 Available NA 85 ~ 153 99 ~ 215
    From: ₹ 4,842.47
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer TRH-S Series

    Transformer TRH-S Series

    TOYOGIKEN

    A transformer built for safety, equipped with electrostatic shielding as standard.

    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 Dimension width(mm) Dimension depth(mm)
    AC0-380-400-440 ~ AC0-200-210-220 0.2 ~ 1.5 AC0-200-220 ~ AC0-100-105-110 Single-phase/Double-winding B Type Screw terminal block 110 ~ 175 Available NA 101 ~ 159 103 ~ 203
    From: ₹ 7,416.58
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer 8YSB Series

    Transformer 8YSB Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 380V 400V 415V secondary voltage 200V 220V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    380 0.05 ~ 2 200 Single-phase/Double-winding A type Screw terminal block 88 ~ 215 Available NA 88 ~ 153 99 ~ 215
    From: ₹ 4,608.07
    Days to Ship: 19 Day(s) or more
    day to ship 19 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer FRA Series

    Transformer FRA Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 100V 110V secondary voltage 24V 26V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    100 0.05 ~ 0.1 24 Single-phase/Double-winding A type Screw terminal block 88 ~ 96 Available NA 85 ~ 86 94 ~ 109
    From: ₹ 4,209.93
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer NYSA Series

    Transformer NYSA Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 380V 400V 420V 440V secondary voltage 100V 115V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    380 0.05 ~ 3 100 Single-phase/Double-winding A type Screw terminal block 88 ~ 220 Available NA 88 ~ 153 99 ~ 235
    From: ₹ 4,691.13
    Days to Ship: 19 Day(s) or more
    day to ship 19 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer UP Series

    Transformer UP Series

    AIHARA

    Single-phase compound / P-type terminal block, primary voltage 100V 110V secondary voltage 200V 220V with shield (E)

    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 Dimension width(mm) Dimension depth(mm)
    100 0.055 ~ 0.5 200 Single-phase/Double-winding A type Screw terminal block 88 ~ 156 Available NA 85 ~ 153 94 ~ 135
    From: ₹ 4,224.65
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • 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 Dimension width(mm) Dimension depth(mm)
    200 0.5 100 Single-phase/single-winding A type Screw terminal block 120 NA NA 120 120
    From: ₹ 9,022.20
    Days to Ship: 5 Day(s) or more
    day to ship 5 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Transformer CLB Series

    Transformer CLB Series

    AIHARA

    Compact product with size and weight are 20-40% less than other brand. The voltage number was marked in different colors on terminal block to avoid faulty wiring.


    [Features]
    · 1kVA The corresponding class of 3 kg decreased.
    · Connection terminal block is summoned on one side to improve the efficiency of wiring.
    · The voltage number was marked in different colors on terminal block to avoid faulty wiring.

    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 Dimension width(mm) Dimension depth(mm)
    200 3 ~ 5 100 Single-phase/Double-winding B Type Screw terminal block 187 ~ 227 Available NA 180 ~ 210 210 ~ 220
    From: ₹ 46,174.53
    Days to Ship: 23 Day(s) or more
    day to ship 23 Day(s) or more
Brand
Product Series
CAD
From
Days to Ship
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
Dimension width(mm)
Dimension depth(mm)

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

    Transformer NYSB Series

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

        Transformer EP Series

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

            Single-Phase Multiple-Winding Transformer, SD21 Series

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

                Transformer N42A Series

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

                    Single-Phase Single-Winding Transformer AD21 Series

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

                        Single-Phase Multiple-Winding Transformer, LD21 Series

                            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 FRB Series

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

                                    Transformer SPA Series

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

                                        Transformer 4YSB Series

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

                                            Transformer N38A Series

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

                                                Transformer TRH-S Series

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

                                                    Transformer 8YSB Series

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

                                                        Transformer FRA Series

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

                                                            Transformer NYSA Series

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

                                                                Transformer UP Series

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

                                                                    Transformer NSR Series

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

                                                                        Transformer CLB Series
                                                                          Brand

                                                                          AIHARA

                                                                          AIHARA

                                                                          TOYOZUMI

                                                                          AIHARA

                                                                          TOYOZUMI

                                                                          TOYOZUMI

                                                                          KAMADASIGNAL

                                                                          AIHARA

                                                                          AIHARA

                                                                          AIHARA

                                                                          AIHARA

                                                                          TOYOGIKEN

                                                                          AIHARA

                                                                          AIHARA

                                                                          AIHARA

                                                                          AIHARA

                                                                          AIHARA

                                                                          AIHARA

                                                                          Product Series

                                                                          Transformer NYSB Series

                                                                          Transformer EP Series

                                                                          Single-Phase Multiple-Winding Transformer, SD21 Series

                                                                          Transformer N42A Series

                                                                          Single-Phase Single-Winding Transformer AD21 Series

                                                                          Single-Phase Multiple-Winding Transformer, LD21 Series

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

                                                                          Transformer FRB Series

                                                                          Transformer SPA Series

                                                                          Transformer 4YSB Series

                                                                          Transformer N38A Series

                                                                          Transformer TRH-S Series

                                                                          Transformer 8YSB Series

                                                                          Transformer FRA Series

                                                                          Transformer NYSA Series

                                                                          Transformer UP Series

                                                                          Transformer NSR Series

                                                                          Transformer CLB Series

                                                                          CAD
                                                                          • 2D
                                                                          • 2D
                                                                          • 2D
                                                                          • 2D
                                                                          • 2D
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                                                                          From

                                                                          ₹ 4,760.76

                                                                          ₹ 10,654.93

                                                                          ₹ 6,571.47

                                                                          ₹ 5,021.95

                                                                          ₹ 4,390.93

                                                                          ₹ 4,708.36

                                                                          ₹ 3,599.47

                                                                          ₹ 4,209.93

                                                                          ₹ 6,337.75

                                                                          ₹ 5,008.56

                                                                          ₹ 4,842.47

                                                                          ₹ 7,416.58

                                                                          ₹ 4,608.07

                                                                          ₹ 4,209.93

                                                                          ₹ 4,691.13

                                                                          ₹ 4,224.65

                                                                          ₹ 9,022.20

                                                                          ₹ 46,174.53

                                                                          Days to Ship 19 Day(s) or more 19 Day(s) or more 5 Day(s) or more 12 Day(s) or more 5 Day(s) or more 5 Day(s) or more 5 Day(s) or more 5 Day(s) or more 5 Day(s) or more 15 Day(s) or more 5 Day(s) or more 5 Day(s) or more 19 Day(s) or more 5 Day(s) or more 19 Day(s) or more 5 Day(s) or more 5 Day(s) or more 23 Day(s) or more
                                                                          Primary voltage(V)380200240420240220AC200-220200100420380AC0-380-400-440 ~ AC0-200-210-220380100380100200200
                                                                          Capacity(kVA)0.05 ~ 30.3 ~ 10.05 ~ 50.05 ~ 30.05 ~ 50.05 ~ 50.1 ~ 0.50.05 ~ 0.10.10.05 ~ 30.05 ~ 20.2 ~ 1.50.05 ~ 20.05 ~ 0.10.05 ~ 30.055 ~ 0.50.53 ~ 5
                                                                          Secondary voltage(V)200100115100115110AC100-11024100200100AC0-200-220 ~ AC0-100-105-11020024100200100100
                                                                          Number of phases/windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/single-windingSingle-phase/Double-windingSingle-phase/single-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/Double-windingSingle-phase/single-windingSingle-phase/Double-winding
                                                                          Insulation typeA typeA typeA type / B TypeA typeA type / B TypeE Type / F typeA typeA typeA typeA typeA typeB TypeA typeA typeA typeA typeA typeB Type
                                                                          Input/output terminal shapeScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal blockScrew terminal block
                                                                          Dimension vertical(mm)88 ~ 220120 ~ 15680 ~ 224.588 ~ 22071 ~ 17281 ~ 20987 ~ 10988 ~ 9610788 ~ 22088 ~ 215110 ~ 17588 ~ 21588 ~ 9688 ~ 22088 ~ 156120187 ~ 227
                                                                          Shield presenceAvailableAvailableAvailableAvailableNAAvailableNAAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableNAAvailable
                                                                          With/without CaseNANANANANANANANANANANANANANANANANANA
                                                                          Dimension width(mm)88 ~ 153120 ~ 15379 ~ 22488 ~ 15368 ~ 17868 ~ 22479 ~ 10685 ~ 8610588 ~ 15385 ~ 153101 ~ 15988 ~ 15385 ~ 8688 ~ 15385 ~ 153120180 ~ 210
                                                                          Dimension depth(mm)99 ~ 235120 ~ 17594 ~ 24799 ~ 23586 ~ 18686 ~ 24788 ~ 11894 ~ 10910499 ~ 23599 ~ 215103 ~ 20399 ~ 21594 ~ 10999 ~ 23594 ~ 135120210 ~ 220

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                                                                          1. 1

                                                                          Related Categories to Transformers

                                                                          FAQ Transformers

                                                                          Question: What is the difference between 1 phase transformers and 3 phase 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: What 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.
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