ZW7-40.5 Outdoor High-Voltage AC Vacuum Circuit Breaker

1.1 The three-phase AC 50Hz outdoor switchgear is suitable for 35kV power system used in urban network and rural network for making and breaking load current, overcurrent and short-circuit current, and for other similar applications.
1.2 Standard
GB1984 "High-voltage alternating-current circuit-breakers" GB/T 11022 "Common specifications for high-voltage switchgear and controlgear standard" DL/T402 "Technical conditions for ordering the high-voltage AC circuit breaker"

Inquiry

Catalog

ZW7-40.5.pdf

Certificate

Overview

Working environment conditions:

1.1 Ambient air temperature: -40℃~+45℃, and maximum daily temperature difference is 25K;

1.2 Relative humidity: The daily mean is not greater than 95%, and the monthly mean is not greater than 90%;

1.3 Altitude: ≤2,000 meters;

1.4 Wind speed: Not exceed 35m/s (equivalent to wind pressure 700 Pa);

1.5 Pollution degree: 3, 4;

1.6 Icing thickness: 10mm;

1.7 Seismic capacity: Horizontal acceleration: 0.3 g m/s2; vertical acceleration: 0.2 g m/s2;

1.8 Installed in places where there are no fire, explosion, chemical corrosion, and frequent severe vibration.

For any requirements out of the normal working conditions, please contact the manufacturer.

Rated current			A	1250, 1600, 2000
Rated frequency			Hz	50
Rated insulation level	1 minute power frequency withstand voltage	Dry test	kV	Phase to phase, phase to earth 95 / 185 open contacts 118
		Wet test		80
	Lighting impulse withstand voltage			Phase to phase, phase to earth / open contacts 215
	(peak)
Rated short-circuit breaking current			kA	20	25	31.5
Rated short-circuit making current (peak)			kA	50	63	80
Rated peak withstand current			kA	50	63	80
4s thermal stability current			kA	20	25	31.5
Rated operation sequence				O-0.3s-CO-180s-CO
Closing time			kV	≤ 60
opening time			A	≤ 120
Rated short-circuit breaking current ON/OFF times			Times	30
Mechanical life				10,000
1 minute power frequency withstand voltage of control circuit and auxiliary circuit			V	2,000
Rated operating voltage and auxiliaray voltage			A	AC/DC220, DC110