HV Withstａnd Test Equipment Series Resonant AC Hipot Test System For Cables-Huazheng Electric Manufacturing (Baoding) Co., Ltd

HV Withstａnd Test Equipment Series Resonant AC Hipot Test System For Cables

hv ac hipot resonant test system

Scope of application

According to your company's field test requirements and the latest regulations of the national power test, combined with product design and manufacturing standards, our company recommends a set of variable frequency series resonant high voltage test equipment, the configuration model is HZ3580-9360/300 series resonance test device. By changing the series-parallel combination of the resonant reactor and the secondary winding connection of the excitation transformer, the following AC voltage withstａnd test requirements for the power cable can be met:

The system configuration meets the AC withstａnd voltage test requirements for XLPE cables of 220KV, 800mm2, 5km and below. Maximum capacitance: 0.845μF (5*0.169μF/1km/800mm2); test voltage: 220kV; test time: 60min; maximum sample current: 70A; heavy load test frequency: 30Hz;

The system configuration meets the AC withstａnd voltage test requirements for 66KV, 800mm2, 5km and below XLPE cables. Maximum capacitance: 1.45μF (5*0.29μF/1km/800mm2); test voltage: 78kV; test time: 60min; maximum sample current: 24A; heavy load test frequency: 30Hz;

Series Resonant Test Equipment

Solution

No.	Name	Model /Specification	Quantity
1	Frequency Power	HZ3580-250 250kW,	1 unit
2	Excitation transformer	HZLCB-250/2.5 ，4×2.5kV/25A	1 unit
3	Resonant reactor	HZXK-2340/130 130kV/18A/30H	4 units
4	Capacitor divider	HZTRF300-0.001 300kV/2nF*2 units	1 unit
5	Accessories	Special wiring, base, equalizing ring, aluminum alloy packing box, Rain cover, voltage divider external meter, etc.	1 set

Typical test configuration

sample Configuration And parameters	220kV/800mm2/ 5km cables	66kV/800mm2/ 5km cables
sample Configuration And parameters	capacitance=0.845μF	capacitance=1.45μF
Reactor configuration	2 units in series and 2 units in parallel (33H series has 1.1 times mutual inductance)	2 units in parallel(7.5H)
Excitation transformer connection	Secondary:2 units in series and 2 units in parallel Output：5kV	Secondary:4 units in parallel Output：2.5kV
Resonant frequency/Hz	30-300	30-300
Test voltage/kV	220	78
Test current/A	≤70	≤50