Detailed Product Description

FZW-40.5 is suitable for three-phase AC 50Hz and 40.5kV levels electrical power systems, mainly used for breaking, making load current and short-circuit current. This equipment can be used with the fuse for taking the main transformer protections.

Ambient conditions:
1) Ambient temperature: not higher than 40°C, and not lower than -30°C
2) Relative humidity:
a) Daily average value: not higher than 95%
b) Monthly average value: not higher than 90%
3) Altitude above sea level: not over 2,000m
 

Mechanical feature parameter:

Item			Unit	Data
Rated voltage			Kv	40.5
Rated current			A	1250
Rated insulation level	1min power frequency withstand voltage	Dry type	Ka	95
		Wet type (to earthing outside insulation)		80
	Light impulse withstand voltage (peak)			185
	Isolating distance	Power frequency		110
		Light impulse withstand voltage (peak)		215
Rated short-time making current			kA	50
Rated short-time withstand current			kA	20
Rated short-time withstand current during time			S	4
Rated peak withstand current			kA	50
Mechanical life			Time	10000