ZW38-63(55)/T1250-1600/25-31.5 Outdoor Two Pole Vacuum Circuit Breaker

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The ZW38-63(55)/T1250-1600/25-31.5 outdoor two pole vacuum circuit breaker is a single-phase high voltage switching device which adopts the vacuum interrupter as the arc-quenching component. The rated voltage and frequency of this single phase circuit breaker are AC 55KV and 50Hz respectively.

This two pole vacuum circuit breaker adopts a spring energy storage type cam linkage mechanism. The energy storage as well as opening and closing operations can be conducted manually or electrically. DC electric operation can be carried out locally or remotely.

Our outdoor two pole vacuum circuit breaker features simple structure, strong breaking capacity, complete operating functions, and no risk of explosion. It is specially designed for opening and closing loads as well as breaking fault current in the AT traction power supply system for electrified railway.

Normal Conditions of Use
1. Altitude: ≤1,000m
2. Ambient Air Temperature: upper limit 40℃; lower limit -30℃ (ordinary areas), -40℃ (high and cold areas)
3. Wind Pressure: ≤700Pa (i.e. wind speed ≤34m/s)
4. Ice Thickness: ≤10mm
5. Air Pollution Class: IV
6. Earthquake Intensity: ≤8degree, There is no recurrent severe shaking, or seismic isolation measures should be taken.
7. The ambient air should not be seriously polluted by corrosive or flammable gases, water vapor, etc.

ZW38-63(55)/T1250-1600/25-31.5 Outdoor Two Pole Vacuum Circuit Breaker

Note: If the outdoor two pole vacuum circuit breaker needs to be used in places dissatisfying the above conditions, customers should consult with our company.

Technical Parameters

No.	Item	Unit	Value
1	Rated Voltage	KV	55
2	Max. Voltage	KV	63
3	Rated Lightning Impulse Withstand Voltage (Peak)	KV	325
4	1min Power Frequency Withstand Voltage	KV	140
5	Rated Frequency	Hz	50
6	Rated Operating Current	A	1250/1600
7	Rated Short-circuit Breaking Current	KA	25/31.5
8	Rated Peak Withstand Current	KA	63/80
9	Rated Short-circuit Closing Current	KA	63/80
10	Rated Short-time Withstand Current	KA	25(4s)/31.5(4s)
11	First-Pole-to-Clear Factor		1.5
12	Rise Rate of Recovery Voltage	KV/μs	0.75
13	Times of Breaking the Rated Short-circuit Current	times	20
14	Rated transient recovery voltage peak	KV	124
15	Closing Time	ms	110±10
16	Opening Time	ms	50±10
17	Closing Speed	m/s	1.3±0.5
18	Opening Speed	m/s	3.0±0.3
19	Energy Storage Time of the Motor	s	<20
20	Motor Voltage	V	DC 110/220
21	Motor Power	W	400
22	Supply Current of the Motor	A	9/5±2
23	Voltage of the Opening and Closing Coils	V	DC 110/220
24	Current of the Opening and Closing Coils	A	4/2.5
25	Rated Pressure of SF6 Gas	Mpa	0.1 (20 ℃)
26	Annual Gas Leak Rate		<1%
27	Standard Operating Sequence	O-0.3s-CO-180s-CO
28	Resistance of the Main Circuit	μΩ	<80
29	Total Weight	kg	2100
30	Mechanical Life	times	10000

We are a professional outdoor two pole vacuum circuit breaker manufacturer and supplier in China. We offer a wide range of products, including indoor vacuum circuit breaker for generator, low voltage switchgear, withdrawable switchgear, and more.

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