Note:1.Load capacitantor can be optional when small load line is tesing or need analog load to control test frequency.
2.Test reactor can be produced to be 130KV,150KV,155KV,200KV, 250KV, 300KV, 350KV, 400KV for each piece rated voltage according to different tested object scope or customer requried. The max. rated current of each HV reactor can be 1~5A,10A,15A,20A,25A,30A.
III. Test priciple figure:

VF: Variable Frequency Power Supply Source which is control and measurement part in the test circuit.
T : Excitation Transformer which provide the exciting voltage for HV test reactor
L : Test Reactor which is resonant inductance in the LC circuit and produce the test voltage
Cx: Tested Equipment
MOA1: Lightning Arrestor is protection part on the excitation transformer
C1,C2: Voltage divider(C1 is high voltage arm,C2 is low voltage arm ) which is HV voltage measurement part
IV. General Technical data:
- Mode of system test: Series resonant with variable frequency
- System model : CHX-9000KVA/150KV,300KV,450KV
- Input power supply : 380±10%(three-phase),50Hz/60Hz
- Number of HV test reactor: 3pieces
- Rated output capacity: 9000kVA
- Rated output Voltage: 150KV,300KV,450KV
- Max Test voltage : no more than 150KV,300KV,450KV
- Rated output current: 20A /single piece or in series;60A in parallal
- Reg. Freq range : 20Hz-300Hz
- Output Resonance voltage waveform: sine wave
- THD of output waveform: ≤1%
- Insulation level: Under 1.1 times and keeping 1min, normal
- Duty cycle : 60mins on under rated current working condition ;
- Quality factor of test set itself: Q≥60
- Temperature rise: Less than 65K under rated current working 60mints;
- Noise level: No more than 70B
- Reactor Structure: oil immersed type, epoxy tube cylinder type;
V. Main Measuring and control software panel as following :

Note: This figure is display panel at setting test parameter step from control and measurement software on the VF power supply
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)
- Supporting base for divider
- Corona ring for test reactor and divider
- A final test report, a quality Certificate ,a user manual and a packing list are offered .
VII. Other typical model
1 Optional model for 132KV class XLPE cable on-site withstand voltage test
Model | Rated voltage | Rated output current | Rated output capacity | Max Application |
CHX-775KVA/155KV | 155KV | 5A | 775KVA | 132kV cable≤1km |
CHX-1550KVA/155KV | 155KV | 10A | 1550KVA | 132kV cable≤2km |
CHX-2325KVA/155KV | 155KV | 15A | 2325KVA | 132kV cable≤3km |
CHX-3100KVA/155KV | 155KV | 20A | 3100KVA | 132kV cable≤4km |
CHX-3875KVA/155KV | 155KV | 25A | 3875KVA | 132kV cable≤5km |
CHX-7750KVA/155KV | 155KV | 50A | 7750KVA | 132kV cable≤10km |
CHX-12400KVA/155KV | 155KV | 80A | 12400KVA | 132kV cable≤16km |
CHX-15500KVA/155KV | 155KV | 100A | 15500KVA | 132kV cable≤20km |
Special requirement can be made by order |
Note :Tested cable voltage class≤ 132kV, 0.25uF/km
2 Optional model for 230KV class XLPE cable on-site withstand voltage test
Model | Rated voltage | Rated output current | Rated output capacity | Max Application |
CHX-2020KVA/255KV | 255KV | 8A | 2020KVA | 220~230kV cable≤1km |
CHX-4080KVA/255KV | 255KV | 16A | 4080KVA | 220~230kV cable≤2km |
CHX-6120KVA/255KV | 255KV | 24A | 6120KVA | 220~230kV cable≤3km |
CHX--8160KVA/255KV | 255KV | 32A | 8160KVA | 220~230kV cable≤4km |
CHX--10200KVA/255KV | 255KV | 40A | 10200KVA | 220~230kV cable≤5km |
CHX--20400KVA/255KV | 255KV | 80A | 20400KVA | 220~230kV cable≤10km |
CHX--25500KVA/255KV | 255KV | 100A | 25500KVA | 220~275kV cable≤12.5km |
Special requirement can be made by order |
Note :Tested cable voltage class≤ 230kV, 0.25uF/km
3 Optional model for 330KV class XLPE cable on-site withstand voltage test
Model | Rated voltage | Rated output current | Rated output capacity | Max Application |
CHX-3500KVA/350KV | 350KV | 10A | 3500KVA | 330kV cable≤1km |
CHX-7000KVA/350KV | 350KV | 20A | 7000KVA | 330kV cable≤2km |
CHX-10500KVA/350KV | 350KV | 30A | 10500KVA | 330kV cable≤3km |
CHX-14000KVA/350KV | 350KV | 40A | 14000KVA | 330kV cable≤4km |
CHX-21000KVA/350KV | 350KV | 60A | 21000KVA | 330kV cable≤5km |
CHX-28000KVA/350KV | 350KV | 80A | 28000KVA | 330kV cable≤10km |
Special requirement can be made by order |
Note :Tested cable voltage class≤ 330kV, 0.25uF/km
4 Optional other model for long XLPE cable on-site withstand voltage test
Model | Rated voltage | Rated output current | Rated output capacity | Application (From 20Hz starting) |
CHX-2600KVA/130KV | 130KV | 10A,20A | 1300KVA | For U0=64KV and below cable |
CHX-3000KVA/150KV | 150KV | 10A, 20A | 3000KVA | For U0=87KV and below cable |
CHX-10000KVA/250KV | 250KV | 20A, 40A | 10000KVA | For U0=127KV and below cable |
CHX-20000KVA/250KV | 250KV | 20A, 80A | 20000KVA | For U0=127KV and below cable |
CHX-21000KVA/350KV | 350KV | 20A, 60A | 21000KVA | For U0=230KV and below cable |
CHX-42000KVA/350KV | 350KV | 20A, 80A | 42000KVA | For U0=230KV and below cable |
Special requirement can be made by order |
Note : XLPE cable test voltage is considering as 1.7U0
5 Optional model for HV or EHV class cable and GIS On-site AC hipot test
Model | Rated voltage | Rated output current | Rated output capacity | Application (From 20Hz starting) |
CHX-2600KVA/130KV,260KV | 130KV,260KV | 20A@130KV | 2600KVA | For U0=64KV cable For 72.5KV class GIS |
10A@260KV | For U0=127KV cable For 145KV class GIS |
CHX-9000KVA/150KV,300KV | 150KV,300KV | 60A@150KV | 9000KVA | For U0=87KV cable For 72.5KV class GIS |
30A@300KV | For U0=160KV cable For 170KV class GIS |
CHX-10000KVA/250KV,500KV | 250KV,500KV | 40A@250KV | 10000KVA | For U0=127KV cable For 145KV class GIS |
20A@500KV | For U0=290KV cable For 362KV class GIS |
CHX-20000KVA/250KV,500KV | 250KV,500KV | 80A@250KV | 20000KVA | For U0=127KV cable For 145KV class GIS |
40A@500KV | For U0=290KV cable For 362KV class GIS |
CHX-21000KVA/350KV,700KV | 350KV,700KV | 60A@350KV | 21000KVA | For U0=190KV cable For 170KV class GIS |
30A@700KV | For U0=290KV cable For 550KV class GIS |
Special requirement can be made by order |
VIII. On-site test standard table from IEC 60840:2011 and IEC 62067:2011 for XLPE cable


IX. On-site insulation test standard table from IEC 62271-203:2011 for HV GIS
