Outdoor Load Break Switch, FZW28-12F

This load break switch is designed to be mounted on pole for outdoor applications, with manual and electrical operations. Supported by Toshiba VSP5-12 technology, it is a maintenance-free switch device.

The load break switch uses SF6 gas as the insulating gas, coupled with vacuum arc-extinguishing.

Designed with functions of fault detection, protection and communication, load break switch is applicable to 10kV overhead power lines, capable of automatic breaking of single phase earth fault and automatic isolating of short-circuit fault between phases.

Environmental Conditions Ambient temperature: up to 40°C, greater than -45°C; Wind speed: not exceeding 35m/s; Altitude: lower than 1000m; Earthquake intensity: ≤ magnitude 8; Relative humidity: daily average ≤ 95%, monthly average ≤ 90%; Ice coating thickness: ≤ 10mm; Areas without risks of fire, explosion, pollution, chemical corrosion and severe vibration; Methods of neutral point earthing: unearthed neutral point, Peterson coil (or arc suppression coil) earthing, low resistance earthing; Technical Parameters

Item			Unit	Parameters
Rated voltage			kV	12
Across the isolating distance insulation level	Power frequency		kV	48
	Lightning impulse withstand voltage(peak)		kV	85
To earth, between the poles insulation level	Power frequency	Dry	kV	42
		Wet	kV	34
	Lightning impulse withstand voltage(peak)		kV	75
Rated current			A	630
Rated short circuit breaking current			kA	20，25
Opening operation of rated short circuit breaking			Times	30
Rated short-time withstand current			kA	20，25
Rated duration of short circuit			s	4
Rated short circuit making current (peak)			kA	50，63
Rated peak withstand current			kA	50，63
Mechanical Endurance			Times	10000
Breaking times of rated breaking current			Times	10000
Gross weight			kg	180 Rated voltage