ZW7-40.5 Outdoor Vacuum Automatic Circuit Breakers

ZW7-40.5 outdoor vacuum automatic circuit breakers is outdoor HV switching devices on three-phase AC 50Hz.lt is used for controlling and protecting 24-40.5KV transmission and distribution systems . It can be controlled to switch-on/off remotely, also be used to control energy storage and switch -on/off manually. Annexing a current transformer inside, it provides measurement and protection.

Price：

￥0.00
Category：

Outdoor High Voltage Vacuum Circuit Breaker
Browse number：

21
Release time：

2024-09-21 23:09:34
Quantity： - +
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Detailed Description

Description

ZW7-40.5 outdoor vacuum automatic Circuit breakers is outdoor HV switching devices on three-phase AC 50Hz.lt is used for controlling and protecting 24-40.5KV transmission and distribution systems . It can be controlled to switch-on/off remotely, also be used to control energy storage and switch -on/off manually. Annexing a current transformer inside, it provides measurement and protection.

The breaker has porcelain post structure. The upper knob insulator has vacuum arc-extinguishing chamber while the nether one is post knob insulator Matching with spring or electromagnetic operating mechanisms, the breaker has high reliability of mechanical property and can be operated frequently. It has no burning and explosion hazard.

The breaker conforms to standards of GB1984-1989AC HV Breaker and IEC 56.IEC62271-100 HVAC Breaker. Its main features: excellent insulating property and strong anti soil performance. According to customer's requests, it can install Current Transformers inside. The measuring accuracy will be level of 0.2. And it realizes three-phase interaction protection.

Environmental conditions:
1. Ambient temperature: not higher than +40 °C, not less than -35°C
2. Altitude: not exceed 1000m.
3. Relative humidity: daily average of not more than 95%, month average of not more than 90%.
4. Earthquake intensity: not more than ten.
5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.

Technical Data

1	Rated Voltage			kV	40.5
2	Rated current			A	1250
3	Rated short-circuit breaking current			kA	20, 25, 31.5
4	Rated short-circuit switching current (peak)				50, 63, 80
5	Rated short time withstand (thermal stability) current				20, 25, 31.5
6	Rated short time withstand (dynamic stability) current				50, 63, 80
7	Rated short-circuit duration time			s	4
8	Rated insulating level	Power frequency withstand voltage (1 min)	Dry-type	kV	95
		Power frequency withstand voltage (1 min)	Wet-type	kV	80
		Lightning impulse withstand voltage (peak)		kV	185
9	Rated operating sequence				O-0.3s-CO-180s-CO
10	Breaking time of rated short-circuit breaking current			Times	12
11	Closing time			ms	≤150
12	Opening time			ms	≤60
13	Mechanical life			times	10000
14	Rated operating voltage			V	AC220,110 DC220,110
15	Clearance between contacts			mm	20+30
16	Contacts over travel			mm	5±1
17	Average opening speed			m/s	1.5±0.2
18	Average closing speed			m/s	0.7±0.2
19	Contact closing bounce time			ms	≤2
20	Loop DC resistance of each phase			μΩ	≤100
21	Outline dimension of breaker (LWH)			mm	22007002500
22	Total weight of breaker (with operating mechanism)			KG	1100