AC Resonance Test System AC Withstand Voltage Testing Equipment

Product Description

 AC Resonance Test System AC Withstand Voltage Testing Equipment

AC Resonance Test System EPCZ-560kVA / 40kV (can be applied on 100MW Generator and 10kV 35kV Cable)

The system is consisted by below units

· Variable Frequency Power supply

· Exciting Transformer

· HV Reactor

· Capacitive Divider

· Accessories Carrycase (connection wires)

Working Environment

· Environmental temperature: -15ºC to 40ºC

· Related humidity: ≤ 90% RH

· Altitude: ≤ 5000m

Application and requirement

1. Meet the 15.6kV/1000MVA generator AC withstand voltage test, capacitance≤1.4uF, test frequency 45~65Hz, test voltage U≤34.8kV (2Un+3). Test time: 1 minute

2. Meet 10kV/300mm2 cable AC withstand voltage test, capacitance≤1.12uF, test frequency 30~300Hz, test voltage U≤22kV. Test time: 5 minutes

3. Meet 35kV/300mm2 cable AC withstand voltage test, capacitance≤0.398uF, test frequency 30~300Hz, test voltage U≤52kV. Test time: 60 minutes

4. Meet the AC withstand voltage test of 10kV transformer, switch, etc., capacitance ≤0.0006uF, test frequency 30~300Hz, test voltage U≤35kV. Test time: 1 minute

Specification

Rated output voltage	Rated output voltage: 0~40kV
Resonant voltage waveform	sine wave, waveform distortion rate <1.0%
Maximum tested product current	1.75A 14A
Maximum test capacity	560kVA
Output frequency	30~300Hz
Working time	Continuous working time is 60min under full power output
Quality factor	30~90
Input working power	Three-phase 380V±5%, 50Hz
Ambient temperature	-15ºC~+40ºC
Relative humidity	<90RH%, no condensation
Altitude	<5000m
Noise	≤50dB

System performance characteristics

1. Make full use of our company's advantages in electronic measurement technology and electromagnetic compatibility, completely independently develop, design and produce all components of this set of equipment including: variable frequency power supply, excitation transformer, cast high voltage reactor and high-precision capacitive voltage divider.

2. Equipped with manual/automatic mode, large screen display, test parameter setting, and automatic timing and operation prompt functions.

3. Possess multiple protection functions, such as: overvoltage, overcurrent protection, discharge protection, detuning protection, etc.

Device capacity determination

The capacity of the equipment is designed to be 560kVA/40kV divided into 8 reactors, and the single reactor is 40kV/1.75A/70H in combination to meet the test requirements of the above-mentioned tested product.

Conclusion determination:

1. 15.6kV/1000MW generator, electric capacity ≤1.4μF, test frequency 45-65Hz, test voltage 34.8kV.

Use 8 reactors in parallel, at this time the inductance is L=70/8=8.6H
Test frequency f=1/2π√LC=1/(2×3.14×√8.6×1.4×10-6)=45.2Hz.
Test current I=2πfCUTest =2π×45.2×1.4×10-6×34.8×103=13.77A

When 8 reactors are used in parallel, the maximum current is 14A, so 14A>13.77A, this set of equipment can meet the requirements of the above tested product.

2. 15.6kV/10MW generator, electric capacity ≤0.1μF, test frequency 45-65Hz, test voltage 34.8kV.Use 1 reactor, at this time the inductance is L=70
Test frequency f=1/2π√LC=1/(2×3.14×√70×0.1×10-6)=60Hz.
Test current I=2πfCUTest =2π×60×0.1×10-6×34.8×103=1.15A

The maximum current of 1 reactor is 1.75A, so 1.75A>1.15A, this set of equipment can meet the requirements of the above tested product.

Conclusion: The device capacity is set to 560kVA/40kV, divided into 8 reactors, and the single reactor is 40/1.75A/70H in combination to meet the test requirements of the tested product.

More details on  AC Resonance Test System AC Withstand Voltage Testing Equipment please contact EP Hipot Electric.

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