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Vertical AC Resonant Test System , AC High Voltage Tester With Variable Frequency

Vertical AC Resonant Test System , AC High Voltage Tester With Variable Frequency

Brand Name : Fanke High-voltage

Model Number : CHX Series

Certification : ISO9001

Place of Origin : Wuhan ,China

MOQ : One Unit

Price : Negotiable

Payment Terms : L/C, T/T

Supply Ability : 10sets / 3months

Delivery Time : 75~90 Working Days

Packaging Details : Export Standard Wooden Case With Fumigation Free

Principle : Typical LC Test Circuit

Appilcation : AC Withstand Voltage Test At Site

MAX.Capacity : OEM

Max.Voltage : OEM

Design Feature : Cylinder And Modular Type Test Reactor

Test Frequency : 20-300Hz

Duty Cycle : 60 mints or OEM

Output waveform : Good Sine Wave

Ordered way : Components may be ordered separately

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AC Resonant Test Set , High Voltage Cable Testing Equipment , AC Withstand Voltage Test Set

I. Application :

AC resonant test set is a kind of high voltage cable testing equipments for applied withstand voltage , which can be classified as variable frequency and variable inductance resonant test system. The former is tuned to resonance by regulating test frequency and the latter is by adjustable inductance. Different regulation modes lead to the same objective, that is, large capacity output on test object can be obtained by inputting small capacity power supply.

For large capacity test objects like XLPE HV cable, the biggest difficulty for adopting power frequency or approach power frequency AC voltage withstand test as acceptance test for XLPE insulating cable, is that it needs power supply and equipments with large capacity. For instance, given a 630mm2, 110kV XLPE cable with capacitance of 0.188uF/kM, the test parameter of each cable is 2.9MVA/128kV/22.7A if cable length is 3kM. Then there has a conclusion that it is impossible to do field test in traditional way. However, in variable frequency resonant test system, by dropping test frequency on one hand, and with a high quality factor (Q) on the other, the required capacity of input power supply is 1/Q of that of test power, thus dramatic reductions in volume and weight of test equipments are available, ideal for field test.

Fanke company owns many years of manufacturing experience in this type of testing equipment, customized types of such equipment according to the test needs of different customers, including OEM services, The components of the sets can also be ordered separately.

II. Main Components of AC Resonant Test Set With Variable Frequency

1. Isolation transformer
2. Variable frequency power source

3. Excitation transformer

4. HV test reactor group(resonant inductor)

5. Voltage divider

6. Optional part

6.1 Load capacitor

6.2 HV damping blocking inductor


1).Load capacitor can be optional when small load line is tesing or need analog load to control test frequency.

2).Test reactor can be produced to be 130KV,150KV,155KV,200KV, 250KV, 300KV, 350KV, 400KV for each piece rated voltage according to different tested object scope or customer requried. The max. rated current of each HV reactor can be 1~5A,10A,15A,20A,25A,30A.

3). Test cir circuit is as following

Portable Variable Frequency Resonant Withstand Voltage Test Set

VF: Variable Frequency Power Supply Source which is control and measurement part in the test circuit.

T : Excitation Transformer which provide the exciting voltage for HV test reactor
L : Test Reactor which is resonant inductance in the LC circuit and produce the test voltage

Cx: Tested Equipment

MOA1: Lightning Arrestor is protection part on the excitation transformer
C1,C2: Voltage divider(C1 is high voltage arm,C2 is low voltage arm ) which is HV voltage measurement part

III. Test Object Range Applied

  1. 110kV~400kV long-distance cables
  2. 110kV~500kV HV GIS
  3. 110kV~220kV HV coupling condenser
  4. 110kV~500kV Capacitor Voltage Transformer(CVT)

Advantage and Features:

  1. Cordwood design to expand capacitance
  2. Large thermal capacitance for a long continuous running hour
  3. Quality Factor:Q≥100(at f=30Hz)
  4. Small size and light weight is easy for field test.
  5. Working frequency range:20-300Hz

Field test figure

Note: 750KV/5A AC resonant test set with variable frequency from Fanke High-voltage is performed withstand voltage on 500KV power substation

Product Tags:

ac high voltage test set


high voltage cable identifier

Quality Vertical AC Resonant Test System , AC High Voltage Tester With Variable Frequency for sale

Vertical AC Resonant Test System , AC High Voltage Tester With Variable Frequency Images

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