ZW32-40.5(35kV)-Outdoor High-Voltage Vacuum Circuit Breaker

Overview

The ZW-35kV (AB-35/40.5) type pole-mounted high-voltage vacuum circuit breaker (available with permanent magnet or spring mechanism) features a specially designed permanent magnet mechanism (or spring mechanism) and a highly reliable intelligent controller. This device is primarily used in medium-voltage overhead line power grids to open and close load currents, overload currents, and short-circuit currents, with support for 0 to 3 automatic reclosing operations.

• High reliability

• Maintenance-free throughout its entire life

• Long mechanical and electrical life

• Compact size, lightweight, and easy to install

• Standard relay protection and fast automatic reclosing function Conditions of Use

• Ambient Air Temperature: -30°C to +60°C

• Altitude: Not exceeding 2000 meters

• Wind Speed: Not exceeding 34 m/s

• Vibration or Ground Movement: Negligible impact on the switchgear and control equipment

• Pollution Level: IV • Storage Temperature: -40°C to +85°C

Technical Parameters

NO.	Item	Unit	Data
01	Rated voltage	kV	40.5
02	Rated current	A	1250/1600
03	Rated frequency	Hz	50 or 60
04	Power frequency withstand voltage 1min (wet) (dry)	kV	80/95
05	Lightning impulse withstand current (peak value)	kV	185
06	Rated short-circuit breaking current	kA	31.5
07	Rated short-circuit making current (peak value)	kA	80
08	Rated peak withstand current	kA	80
09	4S short-time withstand current	kA	31.5
10	Rated operation cycle		O-0.1s-CO-3s-CO-6sCO-60s recovery
11	Rated short-circuit current breaking times	times	30
12	Mechanical lifespan	times	20000
13	Control voltage of permanent magnet mechanism	V	DC220
14	1-minute power frequency withstand voltage of the secondary circuit	KV	2
15	Contact opening distance	mm	16±1
16	contact overtravel	mm	4±0.5
17	Opening speed	m/s	1.4-1.8
18	Closing speed	m/s	0.4-0.8
19	contact closing bounce time	ms	≤5
20	Phase center distance	mm	460±2
21	asynchrony of three-phase opening and closing	ms	≤2
22	Conductive circuit resistance of each phase	μΩ	<120
23	Closing time	ms	25~45
24	Opening time	ms	20~45
25	weight	Kg	295