AC Resonant Test System for 35KV Cable and 110KV Power Substation Test
Features:
- Small size, portable for operating.
- Screen to show the test data, status and display operation step by real-time.
- Small temperature rising at rated load. Dry-type epoxy cast, high mechanical strength and good insulation ability.
- 220V or 380V single phase power source is suitable for on-site sourcing.
- Different type reactors for optional realize the multipurpose.
- With over current, over voltage, IPM and discharge protection function.
- Test result can be printed.
I. Product Usage :
This test set model CHX-270KVA/45KV, 270KV is designed for 10KV / 35KV class short XLPE cable ,power transformer, CB,CT/PT, busbar in 110KV power substation to perform on-site AC withstand voltage test with variable frequency resonant circuit technology; the highest test voltage is no more than 45KV ,90KV,270KV; 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. 1000m of 35kV/300mm2 cable, test frequency 30-300Hz, test voltage 52kV, test time 5min.
2, 3000m 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, 110kV/50000kVA main transformer , capacitance ≤ 0.015uF, test frequency 40-300Hz, test voltage 160kV, test time 1min.
4, CB,CT/PT, busbar in 110KV power substation , test frequency 40-300Hz, test voltage no more than 265, test time 1min.
The whole test set consists of variable frequency power source , excitation transformer , 6pieces of reactors, and high voltage measurement devider(capacitive voltage divider). This type of test set is most suitable for 35KV or 110KV power sub-station
II. General Technical Data
- Rated capacity: 270kVA;
- Input power: three-phase 380V voltage, frequency is 50Hz;
- Rated voltage: 45KV; 270kV;
- Rated current: 1A; 6A;
- 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-20kW/380V |
1piece |
35kgs |
480*480*520mm |
| 2 |
Excitation transformer |
CQSB(J)-15kVA/2.5KV,10KV |
1piece |
130kgs |
500*500*580mm |
| 3 |
HV resonant test reactor |
CHX(kf)-45kVA/45kV |
6pieces |
55kgs |
D420*H480mm |
| 4 |
Capacitive divider |
TRF-270kV/1000pF |
1set |
30kgs |
D200*H2150mm |
| 5 |
Special test accessories |
|
1set |
|
|
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)
- Insulation supporting base
- corona ring for 135KV test
- 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
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