HYWJF-100kW Non-PD Induction withstand voltage test for cable

HYWJF-100kW Non-PD Induction withstand voltage test system

1. The main application of the system

1.1 Meet the test voltage 12kV to 160kV cable AC voltage withstand and local discharge test, test voltage frequency 49 ~ 51Hz;;

1)test voltage 25 kV ,capacitance≤1.592 uF ;

2)test voltage100 kV ,capacitance≤0.637 uF ;

3)test voltage 200 kV,capacitance≤0.159 uF;

2. Main parts of system

2.1. equipment list

2.2. accessories list

Work condition

environment temperature： -10℃～+45℃

Maximum diurnal temperature difference： ＜25K

relative humidity： ≤90%

solar radiation intensity： 0.1W/cm²

altitude： ≤1000m

work place： outdoor/indoor

No danger of fire or explosion

There is no gas containing corrosive metals and insulation

There is a reliable pickup point

The installation location is flat

4. Technical specification of system

4.1. Main parameters

Model number and name： HYWJF-100kW Non-PD induction voltage test system

Input working power supply： 3 phase 380V±10%,50Hz

Rated output power： 100kW

Rated output voltage：single phase 0～350V

Output voltage waveform： Standard sine wave,waveform deviation factor≤1.0%

Rated output frequency： 30～300Hz

Frequency resolution： 0.1Hz

PD： ≤10pC

Allowed elapsed time： Allowable operating time at rated capacity 60min

Noise levels： ≤65dB

5. System Execution Standard

6. Technical specification and performance parameters of main components

6.1 Non-PD variable frequency power supply WJF--100 1

6.1.1 Parameters

Input power supply： three phase 380V±10%,50Hz

Rated output power： 100kW

Rated output voltage： single phase 0～350V,adjustable

Rated output current： 285.7A

Output waveform： Standard sine wave

waveform distortion rate： ≤1.0%

Output voltage instability： ≤1.0%

Output frequency： 30～300Hz

Cooling mode： forced air cooling

Frequency adjustment resolution： 0.1Hz

Output frequency instability： ≤0.1%

Insulation level： Input and output terminals to ground≥2kV/AC/1min

Allowed elapsed time： Allowable operating time at rated capacity≥180min

Noise levels： ≤65dB

PD： Rated voltage and rated current≤10pC

6.1.2 Features

1)Variable frequency power supply has the ability to resist electric field interference. Under strong electric field interference, the measurement accuracy and control protection meet the requirements. Have good magnetic shielding, components, leads are made of high magnetic shielding material, no space radiation

2)With perfect protection function

Input voltage protection, over voltage protection, short circuit (over current) protection, breakdown flashover protection, zero protection, power curve protection, power down protection, over temperature protection, cooling fan linkage protection, output voltage limit function protection

3)Frequency conversion power supply adopts high fidelity linear power amplification principle, there is no high order harmonics caused by IGBT switching circuit, ensure full sine wave output and very low electronic interference signal, Ensure very low PD(≤10pC)

4)Variable frequency power supply is equipped with special leads and plugs to connect with other equipment and special grounding wire group.

9)Intelligent panel display variable frequency power supply control box

① Completely isolated mode

Fiber optic connection is adopted between variable frequency power supply cabinet and variable frequency power supply control box and HV voltage divider, so complete isolation of control unit and high voltage unit is realized!A variety of electromagnetic compatibility shielding measures and multiple protection are adopted inside the control box,At the flashover of the test product or the moment of equipment discharge, it can ensure that the control box itself is not damaged due to discharge, and guarantee the personal safety of the operator reliably.

②Intelligent control box

Integrated frequency conversion power supply control and high voltage measurement. Convenient for on-site monitoring. Specific operation and control functions are as follows:：

With start, stop and emergency switch button;

With booster and buck rough and fine adjustment functions, adjustment rate can be set;

with frequency coarse, fine adjustment function, adjustment rate can be set;

Equip with automatic selection function of radiator direction;

automatic and manual test selection (automatic tuning, automatic boost and buck, etc).

With automatic, manual test mode (can set the test voltage, test time, automatic tuning, automatic voltage boost and buck

has the function of setting test time,The timing time range is 0～99min, Timing accuracy±0.1s,at the end of the period, sound prompts are provided to the tester.

The display includes：Output voltage, current, frequency, and output waveform;

6.2 non-PD excitation transformer

Model：WJB－100kVA/2/4/8kV/300V;350V;400V; 1set

Rated capacity of low-voltage winding：100kVA

Rated voltage of low-voltage winding：2×300/350/400V

Input current：285.7A

Rated capacity of high voltage winding：100kVA

The high voltage winding is double winding: 2/4/8kV

Rated voltage and current of high-voltage winding：2kV/50A;4kV/25A;8kV/12.5A

PD at rated voltage≤10pC

6.3 Non-PD reactor WJDK-1050kVA/100kV 2set

Rated voltage：100kV

Rated current：10.5A

Rated capacity：1050kVA

inductance：31H

Running time：60min

PD at rated voltage：≤10pC

6.4 Non-PD voltage divider 1set

model：WJFRC－200/1000;

rated voltage：200kV;

Working frequency: 30~300hz

capacitance ：C1=1000pF

Error ≤±1.5%

Tan delta: ≤0.5%

PD at rated voltage≤10pC.

6.5 compensation capacitor 1 set

1)Model：WJBC－200/5000;

2)rated voltage：200kV;

3)capacitance：5000pF;

4)PD value：≤10pC;