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Variable Frequency Resonant Withstand Voltage Test Set For Long HV XLPE Cable
I.Application :
This test set model CHX-9000KVA/150KV,300KV,450KV is designed for 132kV~400KV class long XLPE cable on-site AC hpot test and 362KV and below class GIS on-site AC hipot test with variable frequency resonant circuit technology; the highest test voltage is no more than 150KV,300KV,450KV through cylinder test reactor in parallel or in series connection ;the test frequency can be from 20-300Hz; the duty cycle is no more than 60mints.
Through modular test reactor is used in parallel or in seires, the test set model CHX-9000KVA/150KV,300KV,450KV also can be performed the following on-site AC hipot test:
1.1 No more than 150KV and 60A for long distance XLPE cable with no more than U0=87KV
1.2 No more than 300KV and 40A for long distance XLPE cable with no more than U0=160KV ;
170KV and below class GIS
1.3 No more than 450KV and 20A for long distance XLPE cable with no more than U0=230KV ;
362KV and below class GIS
Until now , these designed test set can form many different serialized model according to different HV or UHV withstand test applications through test reactors in series or in parallel connection and number of configurations in each set, The alike model can see clause 9.other typical model.
II. Main Components
SN
Name of Components
Type and specification
Qty.
Each weight
Each Dimension
1
Variable frequency power supply
FKVF-300kW/380V
1piece
280kgs
750*700*1200mm
2
Excitation transformer
CQSB(J)-300kVA
1piece
3000kgs
950*850*900mm
3
HV resonant test reactor
CHX(kf)-3000kVA/150kV
3pieces
4500kgs
D1200*H1250mm
4
Capacitive divider
TRF-450kV/1000pF
1set
275kgs
D250*H2850mm
5
Special test accessories
1set
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;
Suntech Power Group is one of the largest Procurement, Engineering & Contracting Group companies in China.Our group branch company and factory have already engaged
in the field of electric power more than 26 years.
1.Steel structure industry especially steel towers and related pr... Suntech Power Group is one of the largest Procurement, Engineering & Contracting Group companies in China.Our group branch company and factory have already engaged
in the field of electric power more than 26 years.
1.Steel structure industry especially steel towers and related pr...
