GDCY series Impulse Voltage Test System is mainly used to generate lightning impulse voltage, to research and check the ability of lightning impulse ability of electric equipment. It can generate standard lightning waveform and chopping waveform. The system can be used for impulse voltage test and other scientific research on GIS, cable, insulators, air gap, bushing, transformers etc.

Main Compositions:-

A. Computer controlled measurement and control system

B. Charging device

C. Impulse voltage generator

D. Weak damped capacitance divider

E. Auxiliary cabinet

Specifications:-

• Nominal voltage: ±300kV

• Rated energy: 30kJ

• Impulse capacitance: 0.67µF

• Nominal stage voltage: ±100kV

• Number of Stage: 3

• Rated stage energy: 10kJ

• Rated stage capacitance: 2.0µF

• Synchronization error rate: ≤1%

• Min. output voltage: ≥15%Un

• Waveform resistors are supplied, it can be adjusted based on load.

• Impulse voltage waveform and efficiency

• Standard lighting wave: wave head time: 1.2±30µs, wave tail time: 50±20%µs.
• Standard lightning wave ≥90% when load capacitance is below 1000pF, standard lightning wave ≥85% when load capacitance is below 2000pF.

• Continuous time: Above 2/3 of rated voltage, continuous working when charge and discharge once every 120s. Below 2/3 of rated voltage, continuous working when charge and discharge once every 60s.

• It can be manually controlled and constant current charging. The instability of the charging voltage is no more than ±1%, the deviation between the charging voltage and the reference voltage is no more than ±1%, and the charging voltage can be adjusted with an accuracy of ±1%

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