It is used for measuring the output voltage carrying on impulse voltage test for standard lighting impulse voltage wave, wave operation on air gap, insulator group, bushing, power transformer and transformers.
Environment Condition
Altitude height: ≤1500m
Temperature: -20ºC~+40ºC
Relative Humidity: ≤90%
Maximum daily temperature difference: 25ºC
Working environment: Indoor
No-conductive dust
Earthing Resistance: ≤0.5Ω
No fire and explosion danger
Seismic ability: 8 levels of intensity
There is no corrosive metals and insulating gas.
Power source waveform is sine wave, waveform distortion rate < 5%
Specifications
Main Parameter
Damped capacitive Divider is one stage impulse capacitor. Damped resistance adopts multi-stage non-conductive distribute type and capacitive divider is non-conductive structure.
Type: GDFR-300P
Standard wave: ±300kV
Standard operation wave: ±300kV
Standard operation impulse voltage: 250μs±20%/2500μs±60%
Standard lightning impulse voltage: 1.2μs±30%/50μs±20%
HV arm normal capacitance: 400pF
LV arm normal capacitance: 0.4μF
Part response time: Tα≤100nS
Overshoot: β≤20%
Scale factor uncertainty: Kε≤±1.5%
Voltage ratio: 1000:1
Structure: oil type and movable, compose by voltage sharing ring, body, movable base.
Cooling: oil cooling
Over-voltage capacity: continuously run every 120s charge and discharge one time above 110% rated voltage. Continuously run below 100% rated voltage and should not result in damage on any insulation of capacitor.
Temperature rise: At the normal operation and working, winding resistance temperature rise≤65K, oil temperature rise≤55K.
Cooling mode: ONAN
Structure: The insulation shell is winding by epoxy glass. Insulation tube surface coated insulation paint and coating should have strong waterproof in case that insulation shell change the electric field distribution on the surface and reduce the electric strength affected by moisture.
Voltage sharing ring and mobile chassis are supplied.
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