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0102030405

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Huazheng Variable Frequency Series Resonance Test Device Ac Resonance Test System

Huazheng Electric is proud to present our innovative series resonance products, designed to meet the growing demand for reliable and efficient power solutions. Our series resonance products are engineered to deliver exceptional performance, ensuring optimal power quality and stability for a wide range of applications.
At Huazheng Electric, we understand the critical importance of power quality in today’s industrial and commercial environments. Our series resonance products are meticulously crafted to address the challenges of power factor correction, harmonic mitigation, and voltage regulation, providing a comprehensive solution for enhancing the efficiency and reliability of electrical systems.

Product apply range and features

1. 150kV power cable test

Capacitance to be tested: frequency at 30-300HZ, capacitance to

bestested 0.35uF.

The test voltage is no more than 150kV, and the running time is 60min.

2. 150kV HV switch GIS test

Capacitance to be tested: frequency at 30-300HZ, capacitance to be

tested: 0.0885uF.

The test voltage is no more than 300kV, and the running time is 1min.

3. 28KV/800MVA generator test

Capacitance to be tested: frequency at 30-300HZ, capacitance to

bestested 0.35uF.

The test voltage is no more than 59kV, and the running time is 1min.

Working environment

1. Ambient temperature: -15 0C -50 0C;

2. Relative humidity: ≤ 95% RH;

3. Altitude: ≤1000 m;

1Huazheng Electric Manufacturing Co.,Ltd

Operation condition

1. Rated capacity: 1500kVA;

2. Input power: three-phase 380V voltage, 50Hz frequency;

3. Rated voltage: 150kV; 300 kv

4. Rated current: 10A; 5 A

5. Working frequency: 30-300hz;

6. Device output waveform: sine wave

7. Waveform distortion rate: Output voltage waveform distortion rate ≤ 1%;

8. Working time: allowed for 90min continuously under the rated

load; ;Overpressure 1.1 times 1 minute;

9. Temperature rise: after running 90min under rated load, the temperature

rise is ≤25K;

10. Quality factors: the device itself Q ≥ 30 (f = 45Hz);

11. Protection function: the test product has over-current, overvoltage and

test flashover protection (see the variable frequency power section);

12. Measurement accuracy: system RMS 1.5;

Standards

Standards to follow for manufacture of equipment

GB1094 Electric transformer

GB10229-88 Reactor

GB50150-2006 Electrical equipment installation engineering electrical

2Huazheng Electric Manufacturing Co.,Ltd

equipment handover test standard

DL/T 596-1996

Preventive test procedure for electrical equipment

GB1094.1-GB1094.6-96

Enclosure protection class

GB2900

Electrotechnical terminology

GB/T16927.1~2-1997

High voltage test technology

ZBK41006-89 test transformer

IEC358（1990） coupling capacitor and capacitive divider

IEC1000 electric magnetic

Q/NNAR6-2001 VFSR Series Resonance Test Standards GB4793-1984

Electric measure safety requirement

Components

1.JLB-120kVA/6/12/18/24/30kV/0.4kV Exciter transforemer 1 pc

2.HZXB-F -120kW/380V variable frequency power supply 1 pc

3. DK-750kVA/150kV HV frequency variable reactor 2 pcs

4.FR-300kV/1000pF capacitive divider 1 pc

Device capacity determination

Design of two reactors, the single reactor for the 750kVA / 150kV /

5A / 160H, the total capacity of the device 1500kVA.

Verification: 1,150kV cable AC voltage test, capacitance ≤ 0.35uF,

test frequency 30-300Hz, test voltage does not exceed 150kV, running time 60min.

Use the reactor two parallel, then L = 160/2 = 80H, then:Huazheng Electric Manufacturing Co.,Ltd

Test frequency: f = 1 / 2π√LC = 1 / (2 × 3.14 × √80 × 0.35 ×

10-6) = 30.08 Hz

Test current: I = 2πfCU = 2π × 30.08 × 0.35 × 10-6 × 150 ×

103 = 9.92A

2,28KV / 800MVA generator AC voltage test, capacitance ≤ 0.35uF, test frequency 30-65Hz, test voltage does not exceed 59kV, test time 1min.

Use the reactor two parallel, then L = 160/2 = 80H, then:

Test frequency: f = 1 / 2π√LC = 1 / (2 × 3.14 × √80 × 0.35 ×

10-6) = 30.08 Hz

Test current: I = 2πfCU test = 2π × 30.08 × 0.35 × 10-6 × 59

× 103 = 3.9A

The installed capacity is 1500kVA/300kV,two single

750kVA/150kV/5A/160H reactor,Reactor single section of 750kVA /

150kV / 5A / 160H, the use of reactor series and parallel to meet the test requirements of the test. To use of reactor series and parallel to meet the test requirements of the test.

Huazheng Electric’s series resonance products are available in a variety of configurations to suit specific customer requirements. Whether it’s for industrial facilities, commercial buildings, or renewable energy installations, our products offer versatile solutions to optimize power quality and reduce energy costs.

Furthermore, our commitment to quality and reliability is reflected in the rigorous testing and certification processes that our series resonance products undergo. Customers can have full confidence in the performance and safety of our products, knowing that they meet the highest industry standards.

In conclusion, Huazheng Electric’s series resonance products are the ideal choice for businesses seeking to enhance power quality, improve energy efficiency, and reduce operational costs. With our cutting-edge technology and unwavering dedication to customer satisfaction, we are proud to offer a comprehensive range of series resonance products that set the standard for excellence in the power industry.

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