ZW7A Outdoor High-voltage AC Vacuum Interrupter

ZW7A outdoor high-voltage AC vacuum interrupter produced by KEXR, a manufacturer in China, is an outdoor high-voltage interrupter suitable for 40.5kV voltage class, which is mainly used for substation outgoing line, power distribution of industrial and mining enterprises and new energy power generation system, and has the characteristics of high breaking capacity, maintenance-free and intelligent control, and is suitable for harsh outdoor environment.
Model: ZW7A-40.5
Brand：KEXR

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Product Description

● ZW7A outdoor high-voltage AC vacuum interrupter product features

◆High voltage grade design

The rated voltage of ZW7A outdoor high-voltage AC vacuum interrupter is 40.5kV, which is suitable for 35kV power systems (such as wind power and photovoltaic booster stations). Vacuum arc extinguishing technology, no oil, no SF, environmental protection and maintenance-free.

◆Outdoor fully sealed structure

The ZW7A outdoor high-voltage AC vacuum interrupter adopts silicone rubber sleeve, UV-resistant, anti-fouling, protection grade IP67 (dustproof and waterproof). Solid sealing pole (optional): epoxy resin is poured to enhance insulation performance, which is suitable for high humidity and salt fog areas.

◆Intelligent control (optional)

Microcomputer-based protection device: it supports overcurrent, quick break and zero sequence protection. Automatic reclosing (adjustable for 1~3 times) to improve the reliability of power supply. Communication interface: ZW7A outdoor high-voltage AC vacuum interrupter support 4G/GPRS and RS485, and connect with SCADA system.

◆High reliability operating mechanism

Spring energy storage mechanism (electric+manual operation):

Electric energy storage: DC220V/AC220V optional. Manual brake release: mechanical tripping in case of emergency. Mechanical life: ≥10,000 times, electrical life ≥5,000 times (rated current)

● Typical application scenarios of ZW7A outdoor high-voltage AC vacuum interrupter

◆35kV substation: ZW7A outdoor high-voltage AC vacuum interrupter is suitable for outgoing circuit breaker and sectional protection.

◆New energy power generation: grid-connected switches of wind power and photovoltaic booster stations.

◆Industrial and mining enterprises: protection of large high-voltage motors and transformers.

◆Railway traction power supply: 35kV distribution system of electrified railway.

● Technical parameters of The ZW7A outdoor high-voltage AC vacuum interrupter

Number	Item		Unit	Data
1	Rated voltage		KV	40.5
2	Rated frequency		HZ	1250，1600,2000
3	Rated current		A	20，25,31.5
4	Rated short-circuit break current		KA	50,63,80
5	Rated withstand current (peak)			20，25,31.5
6	Rated short-term withstand current			31.5
7	Rated short circuit closing current			80
8	Rated operating sequence			O-0.3s-CO-180s-CO
9	Mechanical life		Time	10000
10	Rated short-circuit breaking current breaking times		Time	20
11	1Min working frequency withstand voltage	(wet)Phase to phase/ground	KV	80
11	1Min working frequency withstand voltage	(dry)Phase to phase/ground	KV	95
12	Lighting impulse withstand voltage Phase to phase/ground		KV	180
13	Allowable wear thickness of dynamic and static contacts		mm	3
14	Net weight		kg	About 600
15	Contact distance		mm	22±2
16	Contact stroke of contact		mm	4±1
17	Average opening speed		m/s	1.3~1.8
18	Average closing speed		m/s	1.0~1.7
19	Contact closing bounce time		ms	≤3
20	Synchronization of three-phase opening and closing		ms	≤3
21	Main circuit resistance		μΩ	≤100
22	Closing time		ms	≤150
23	Opening time		ms	≤60

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Contact Info

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Address

No.228 Weishiqi Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province, China
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Tel

+86-15258076596
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E-mail

sales01@kexunelectric.com

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