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25KV AC 50Hz Pole Outdoor Vacuum Interrupter Type PVTI

Technical Parameters	Value
Rated operating voltage	25kV
Rated insulation class	52kV
Rated normal current	800A
Rated power frequency withstand voltage	95kV
Rated lightning Impulse withstand voltage	250kVp
Rated short time withstand current	8kA for 3 secs
Rated short circuit making current	20kAp
Rated duty cycle	CO-15sec-CO
Rated aux. supply for spring charging motor	110VDC
Motor rating	700W
Rated supply voltage for trip/close coils	110VDC
Power required for trip/close coil	275W
Applicable standards	IEC62271-100
RDSO specification	ETI/PSI/167 (09/97)
Auxiliary Switch	6NO + 6NC

Service environmental conditions:

Maximum ambient air temperature	45°C
Minimum ambient air temperature	0°C
Average ambient air temperature over a period of 24hrs	35°C
Maximum relative humidity	100%
Annual rainfall range	1750mm to 862530mm
Number of thunderstorm days per annum	85 (max)
Number of dust storm days per annum	35 (max)
Number of rainy days per annum	120 (max)
Maximum basic wind pressure	200 Kg/Sqm
Altitude	Not Exceeding 1000m
Pollution level	Heavily Polluted