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LIGHTSTAR Transformers

Transformers products in the Electrical & Controls category from LIGHTSTAR. The product can be selected based specifications such as Primary voltage, Capacity, Secondary voltage, Number of phases/winding, Shield presence. LIGHTSTAR offers products around 21 items and the product specifications can easily be compared. Parts and equipment for controlling machines and electrical systems. Controllers and power supplies. LIGHTSTAR products are available to order through MISUMI online 24/7. Free shipping, no minimum order.
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21 itemsMặt hàng

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

    Pulse into Analog Converter (KTK Series)

    Pulse into Analog Converter (KTK Series)

    LIGHTSTAR

    Pulse-to-Analog Converter KTK Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 3,271,990 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.

    3-Phase Potential Transformer

    3-Phase Potential Transformer

    LIGHTSTAR

    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)
    220 ~ 440 0.05 110 ~ 220 Single-phase/Double-winding / Three-phase/double-winding - - - - - - - -
    From: 3,652,537 VND
    Days to Ship: Số ngày giao hàng: 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.

    AC Voltage Converter (KTB Series)

    AC Voltage Converter (KTB Series)

    LIGHTSTAR

    AC Voltage Converter KTB Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 1,480,012 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.

    AC Current Transformer (KTA Series)

    AC Current Transformer (KTA Series)

    LIGHTSTAR

    AC Current Transformer KTA Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 1,480,012 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.

    Potential Transformer

    Potential Transformer

    LIGHTSTAR

    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)
    220 ~ 440 0.015 ~ 0.05 110 Other - - - - - - - -
    From: 2,681,746 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.

    DC Isolation Converter (KTD Series)

    DC Isolation Converter (KTD Series)

    LIGHTSTAR

    DC Isolation Converter KTD Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 3,271,990 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.

    Meter Electric Transformer (KBT Series)

    Meter Electric Transformer (KBT Series)

    LIGHTSTAR

    [Features] ・It is a product used to measure AC voltage of low voltage and used for meter or Converter with low insulation class or safety. In general, the primary voltage and the secondary voltage are determined. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    220 ~ 460 - 110 ~ 115 Single phase - - - NA - CE - -
    From: 1,973,905 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.

    Potential Difference Converter (KTL Series)

    Potential Difference Converter (KTL Series)

    LIGHTSTAR

    Potential Difference Converter KTL Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 3,271,990 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.

    Commercial Frequency Socket Converter (KSF Series)

    Commercial Frequency Socket Converter (KSF Series)

    LIGHTSTAR

    Commercial Frequency Socket Converter KSF Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 2,862,914 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.

    Resistance Temperature Converter (KTP Series)

    Resistance Temperature Converter (KTP Series)

    LIGHTSTAR

    Resistnace Temperature Converter KTP Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 3,271,990 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.

    Potential Difference Socket Converter KSL Series

    Potential Difference Socket Converter KSL Series

    LIGHTSTAR

    Potential Difference Socket Converter KSL Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 2,862,914 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.

    Meter Electric Transformer (KBR Series)

    Meter Electric Transformer (KBR Series)

    LIGHTSTAR

    [Features] ・KS C 1706 meter transformer (applicable standard), IEC 60044-2 induction transformer ・Inductive withstand voltage: 120 Hz to withstand twice the rated voltage ・Withstanding voltage: 3kV / 1 minute ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    220 ~ 460 - 110 ~ 115 Single phase - - - NA - CE - -
    From: 2,325,460 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.

    Commercial Frequency Converter (KTF Series)

    Commercial Frequency Converter (KTF Series)

    LIGHTSTAR

    Commercial Frequency Converter KTF Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 3,271,990 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.

    AC Power/Electric Power Transformer (KTG/KTW Series)

    AC Power/Electric Power Transformer (KTG/KTW Series)

    LIGHTSTAR

    AC Power (KTG Series) / Electric Power (KTW Series) Converter. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 4,089,832 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.

    Power Factor Transformer KTH Series

    Power Factor Transformer KTH Series

    LIGHTSTAR

    Power Factor Converter KTH Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 4,089,832 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.

    Reactive Power Transformer (KTI Series)

    Reactive Power Transformer (KTI Series)

    LIGHTSTAR

    Reactive Power Converter KTI Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 4,089,832 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.

    Digital Signal DC Power Converter (KTM Series)

    Digital Signal DC Power Converter (KTM Series)

    LIGHTSTAR

    Digital Signal DC Power Converter KTM Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 8,179,664 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.

    AC Current Socket Converter (KSA Series)

    AC Current Socket Converter (KSA Series)

    LIGHTSTAR

    AC Current Socket Converter KSA Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 2,454,149 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.

    AC Voltage Socket Converter (KSB series)

    AC Voltage Socket Converter (KSB series)

    LIGHTSTAR

    AC Voltage Socket Converter KSB Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 2,454,149 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.

    DC Insulated Socket Converter (KSD Series)

    DC Insulated Socket Converter (KSD Series)

    LIGHTSTAR

    DC Insulated Socket Converter KSD Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 2,862,914 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.

    Resistance Temperature Socket Converter (KSP Series)

    Resistance Temperature Socket Converter (KSP Series)

    LIGHTSTAR

    Resistance Temperature Socket Converter KSP Series. ・Related Keywords: LIGHTSTAR, Light Star, Gwangseong Measurement Instrument corp, Transformer

    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)
    - - - Other - - - - - - - -
    From: 2,862,914 VND
    Days to Ship: Số ngày giao hàng: 11 Day(s)
    day to ship 11 Day(s)
BrandNhãn hiệu
Product SeriesDòng sản phẩm
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)

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

    Pulse into Analog Converter (KTK Series)

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

        3-Phase Potential Transformer

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

            AC Voltage Converter (KTB Series)

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

                AC Current Transformer (KTA Series)

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

                    Potential Transformer

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

                        DC Isolation Converter (KTD Series)

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

                            Meter Electric Transformer (KBT Series)

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

                                Potential Difference Converter (KTL Series)

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

                                    Commercial Frequency Socket Converter (KSF Series)

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

                                        Resistance Temperature Converter (KTP Series)

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

                                            Potential Difference Socket Converter KSL Series

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

                                                Meter Electric Transformer (KBR Series)

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

                                                    Commercial Frequency Converter (KTF Series)

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

                                                        AC Power/Electric Power Transformer (KTG/KTW Series)

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

                                                            Power Factor Transformer KTH Series

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

                                                                Reactive Power Transformer (KTI Series)

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

                                                                    Digital Signal DC Power Converter (KTM Series)

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

                                                                        AC Current Socket Converter (KSA Series)

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

                                                                            AC Voltage Socket Converter (KSB series)

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

                                                                                DC Insulated Socket Converter (KSD Series)

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

                                                                                    Resistance Temperature Socket Converter (KSP Series)
                                                                                      BrandNhãn hiệu

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      LIGHTSTAR

                                                                                      Product SeriesDòng sản phẩm

                                                                                      Pulse into Analog Converter (KTK Series)

                                                                                      3-Phase Potential Transformer

                                                                                      AC Voltage Converter (KTB Series)

                                                                                      AC Current Transformer (KTA Series)

                                                                                      Potential Transformer

                                                                                      DC Isolation Converter (KTD Series)

                                                                                      Meter Electric Transformer (KBT Series)

                                                                                      Potential Difference Converter (KTL Series)

                                                                                      Commercial Frequency Socket Converter (KSF Series)

                                                                                      Resistance Temperature Converter (KTP Series)

                                                                                      Potential Difference Socket Converter KSL Series

                                                                                      Meter Electric Transformer (KBR Series)

                                                                                      Commercial Frequency Converter (KTF Series)

                                                                                      AC Power/Electric Power Transformer (KTG/KTW Series)

                                                                                      Power Factor Transformer KTH Series

                                                                                      Reactive Power Transformer (KTI Series)

                                                                                      Digital Signal DC Power Converter (KTM Series)

                                                                                      AC Current Socket Converter (KSA Series)

                                                                                      AC Voltage Socket Converter (KSB series)

                                                                                      DC Insulated Socket Converter (KSD Series)

                                                                                      Resistance Temperature Socket Converter (KSP Series)

                                                                                      From

                                                                                      3,271,990 VND-

                                                                                      3,652,537 VND-

                                                                                      1,480,012 VND-

                                                                                      1,480,012 VND-

                                                                                      2,681,746 VND-

                                                                                      3,271,990 VND-

                                                                                      1,973,905 VND-

                                                                                      3,271,990 VND-

                                                                                      2,862,914 VND

                                                                                      3,271,990 VND-

                                                                                      2,862,914 VND

                                                                                      2,325,460 VND-

                                                                                      3,271,990 VND-

                                                                                      4,089,832 VND-

                                                                                      4,089,832 VND-

                                                                                      4,089,832 VND-

                                                                                      8,179,664 VND

                                                                                      2,454,149 VND

                                                                                      2,454,149 VND

                                                                                      2,862,914 VND-

                                                                                      2,862,914 VND

                                                                                      Days to ShipSố ngày giao hàng 11 Day(s) 5 Day(s) or more 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s) 11 Day(s)
                                                                                      Primary voltage(V)-220 ~ 440--220 ~ 440-220 ~ 460----220 ~ 460---------
                                                                                      Capacity(kVA)-0.05--0.015 ~ 0.05----------------
                                                                                      Secondary voltage(V)-110 ~ 220--110-110 ~ 115----110 ~ 115---------
                                                                                      Number of phases/windingOtherSingle-phase/Double-winding / Three-phase/double-windingOtherOtherOtherOtherSingle phaseOtherOtherOtherOtherSingle phaseOtherOtherOtherOtherOtherOtherOtherOtherOther
                                                                                      Insulation type---------------------
                                                                                      Input/output terminal shape---------------------
                                                                                      Dimension vertical(mm)---------------------
                                                                                      Shield presence------NA----NA---------
                                                                                      With/without Case---------------------
                                                                                      Representative Standard------CE----CE---------
                                                                                      Dimension width(mm)---------------------
                                                                                      Dimension depth(mm)---------------------

                                                                                      Loading...Tải…

                                                                                      1. 1

                                                                                      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.