540kVA 270kv Frequency Variable Resonance Testing System Cable Withstand Voltage Tester

The variable frequency resonance testing system is mainly used for cable, hydraulic generator, transmitting line transformer, busbar, GIS or other large capacity electric equipment AC withstand voltage testing. The testing system has wide application, regarding as ideal testing equipment for high-voltage testing department, electricity maintenance department or electric engineering department. The composite-mode design is very convenient for wild use.

The testing system consists of: Variable frequency power control box(console), excitation transformer, reactor, capacity voltage divider, compensatory capacitor(Optional). 

Basic Parameters

Rated output voltage	0-1000kV or under
Output frequency	30-300Hz
Resonance voltage waveform	Sine wave, waveform distortion rate ≤1.0%
Protection	Overvoltage, overcurrent, zero-start and other protective functions
Work form	Continuous working
Quality factor	30-90
Frequency adjust sensitivity	0.1Hz
Testing accuracy	1.5%
Instable degree	<0.05%
Power source	Single phase 220V or 3 phase 380V &plusmn;10%
	Power frequency 50Hz &plusmn;5%

Remark: Specific parameters' configuration about the testing equipment is in accordance with the test object's voltage, capacity and so on.

Series Testing Systems' Configuration and Application

Model	Application(10kV~500kV transformer substation AC voltage withstand equipment, frequency 30~300Hz)
	Frequency Power Source	Resonant Reactor	Excitation transformer	Divider	Application
HZBP-BD-50/50/25	3kW	25kV/1A two sets(dry type)	3kVA(dry type)	50kV	≤1000kVA 10kV transformer 10kV switch, busbar, PT, CT ect. 10kV(300mm2) cable≤1.0km
HZBP-BD-108/108/27	5kW	27kV/1A four sets(dry type)	5kVA(dry type)	110kV	≤31500kVA 35kV transformer 35kV switch, busbar, PT, CT ect. 10kV(300mm2) cable 2km 35kV(300mm2) cable 0.5km
HZBP-BD-200/200/50	10kW	50kV/1A four sets(dry type)	10kVA(dry type)	200kV	≤50000kVA 110kV transformer 110KV GIS, PT, CT ect.(preventive test) 35kV(300mm2) cable ≤1.0km 10kV(300mm2) cable ≤2.0km
HZBP-BD-270/270/45	15kW	45kV/1A six sets(dry type)	15kVA(dry type)	300kV	≤50000kVA 110kV transformer 110kV GIS, PT, CT ect. 35kV(300mm2) cable ≤1.2km 10kV(300mm2) cable ≤3.0km
HZBP-BD-800/400/50	30kW	50kV/2A eight sets(dry type) 100kV/2A four sets(oil immersed)	30kVA(dry type) 30kA(oil immersed)	400kV	≤80000kVA 220kV transformer ≤50000kVA 110kV transformer 110kV/220kV GIS, PT, CT ect. 35kV(300mm2) cable ≤2.0km 110kV(300mm2) cable ≤0.7km
HZBP-BD-1600/800/200	60kW	200kV/2A four sets(oil immersed)	60kVA(dry type)	800kV	≤80000kVA 220kV transformer ≤50000kVA 110kV transformer 500kV GIS, PT, CT ect. 220kV switch, busbar, PT, CT ect. 110kV(400mm2) cable ≤1.5km 220kV(400mm2) cable ≤1.0km
Note: Can be customized

The Advantages of Series Variable Frequency Resonance in Electric System
1. The needed power capacity is greatly reduced.
2. The weight and dimension of complete equipment are greatly reduced.
3. Improve the output voltage's waveform.
4. Prevent large short-circuit current burning fault point.
5. Never have any recovery overvoltage.

Company Profile
Wuhan Hezhong Electric Equipment Manufacture Co., Ltd is a high-tech enterprise professionally engaged in R & D, manufacture and marketing of power testing products, instruments, power industry automation systems for 20 years.We export completed set to Korea, Singapore, Vietnam, India, Ecuador, Paraguay, Pakistan, Philippines, Russia, Italy, Austria, Portugal, Chile such as PD test system, impulse voltage generator, temperature rising test system, transformer comprehensive test system, cable fault detect system and varies of instruments for transformer, circuit breaker, switchgear, lightning arrestor, insulator, cable, battery, SF6 gas and so on.

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