Portable Variable Frequency Resonant Withstand Voltage Test Set , For 35KV Cable and Power Substation Test
I. Product Usage :
This test set model CHX-108KVA/27KV, 108KV is designed for 10KV /
35KV class XLPE cable ,power transformer, CB,CT/PT, busbar in 35KV
power substation to perform on-site AC withstand voltage test with variable frequency resonant circuit
technology; the highest test voltage is no more than 27KV
,54KV,108KV; test frequency: 30-300Hz; the duty cycle is no more
than 60mints. it can help customers to perform preventive test or
hand-over test on AC withstand voltage test
Test range of the set is as following:transformer
1. 500m of 35kV/300mm2 cable, test frequency 30-300Hz, test voltage
52kV, test time 60min.
2, 2000m of 10kV/300mm2 cable , test frequency 30-300Hz, test
voltage 22kV, test time 5min.
3, 35kV/31500kVA main transformer , capacitance ≤ 0.015uF, test
frequency 40-300Hz, test voltage 68kV, test time 1min.
4, CB,CT/PT, busbar in 35KV power substation , test frequency
40-300Hz, test voltage does not exceed 95kV, test time 1min.
The whole test set consists of variable frequency power source ,
excitation transformer , 4pieces of reactors, and high voltage
measurement devider(capacitive voltage divider). This type of test
set is most suitable for 35KV power sub-station
II. General Technical Data
- Rated capacity: 108kVA;
- Input power: three-phase 380V voltage, frequency is 50Hz;
- Rated voltage: 27kV, 54kV,81KV, 108KV
- Rated current: 1A; 4A;
- Working frequency: 30-300Hz;
- Device output waveform: sine wave
- Waveform distortion rate: output voltage waveform distortion rate ≤
1%;
- Working time: continuous 60min allowed under rated load;
overpressure 1.1 times 1 minute;
- Temperature rise: temperature rise ≤65K after continuous operation
for 60 minutes under rated load;
- Quality factor: device itself Q≥30 (f=45Hz);
- Protection function: Over-current, over-voltage and test product
flashover protection for the tested product (see the variable
frequency power supply section for details);
- Measurement accuracy: system effective value 1.5;
III. Main Components:
| SN | Name of Components | Type and specification | Qty. | Each weight | Each Dimension |
| 1 | Variable frequency power | FKVF-5kW/380V | 1piece | 35kgs | 450*450*500mm |
| 2 | Excitation transformer | CQSB(J)-5kVA/1.25KV,5KV | 1piece | 35kgs | 450*350*450mm |
| 3 | HV resonant test reactor | CHX(kf)-27kVA/27kV | 4pieces | 42kgs | D350*H400mm |
| 4 | Capacitive divider | TRF-110kV/1000pF | 1set | 10kgs | D150*H850mm |
| 5 | Special test accessories | | 1set | | |
IV. Test priciple :
VF: Variable Frequency Power Source T : Excitation Transformer
L : Test Reactor Cx: Tested Equipment MOA1: Lightning Arrestor
C1,C2: Voltage divider(C1 is high voltage arm,C2 is low voltage arm
)
V. Main Measuring and control software panel:
Note: This is the software panel before start test for parameter
setting
VI.Accessories
- Accessory box for storage accessoires
- Input cables of power source
- Output cables of power source
- Output cables of exciting transformer
- System grounding cables
- Parallel cables of the reactor
- HV measuring cables ( the signal output cables of voltage divider )
- HV output cables(reactor to divide,divider to test object)
- A final test report, a quality Certificate ,a user manual and a
packing list are offered .
VII. Other Optional Model
1. For GIS on-site test
| Model | Rated voltage | Rated output current | Rated output capacity | Application (From 45Hz starting) |
| CHX-135KVA/135KV | 27KV*5 | 1A | 135KVA | For 72.5KV and below GIS |
| CHX-270KVA/135KV | 27KV*5 | 1A | 135KVA | For 72.5KV and below GIS |
| CHX-216KVA/216KV | 27KV*8 | 1A | 216KVA | For 123KV and below GIS |
| CHX-270KVA/270KV | 27KV*10 | 1A | 270KVA | For 145KV and below GIS |
| CHX-275KVA/275KV | 275KV | 2A | 275KVA | For 170KV and below GIS |
| Special requirement can be made by order |
2. For 45KV XLPE cable on-site test
| Model | Rated voltage | Rated output current | Rated output capacity | Max Application |
| CHX-108/54 | 54KV | 2A | 108KVA | 45kV cable≤1km |
| CHX-216/54 | 54KV | 4A | 216KVA | 45kV cable≤2km |
| CHX-324/54 | 54KV | 6A | 324KVA | 45kV cable≤3km |
| CHX-432/54 | 54KV | 8A | 432KVA | 45kV cable≤4km |
| CHX-540/54 | 54KV | 10A | 540KVA | 45kV cable≤5km |
| CHX-1080/54 | 54KV | 20A | 1080KVA | 45kV cable≤10km |
| Special requirement can be made by order |
3. For 66KV XLPE cable on-site test
| Model | Rated voltage | Rated output current | Rated output capacity | Max Application |
| CHX-160/80 | 80KV | 2A | 160KVA | 66kV cable≤0.5km |
| CHX-320/80 | 80KV | 4A | 320KVA | 66kV cable≤1km |
| CHX-640/80 | 80KV | 8A | 640KVA | 66kV cable≤2km |
| CHX-960/80 | 80KV | 12A | 960KVA | 66kV cable≤3km |
| CHX-1280/80 | 80KV | 16A | 1280KVA | 66kV cable≤4km |
| CHX-1600/80 | 80KV | 20A | 1600KVA | 66kV cable≤5km |
| CHX-3200/80 | 80KV | 40A | 3200KVA | 66kV cable≤10km |
| CHX-9600/80 | 80KV | 120A | 9600KVA | 66kV cable≤20km |
| Special requirement can be made by order |
VIII. On-site insulation test standard table from IEC 60840:2011
for XLPE cable
