ZN12-40.5 INDOOR HIGH VOLTAGE VACUUM CIRCUIT BREAKERS

Short Description:

ZN12-40.5 type circuit breaker is an indoor device with three-phase AC 50Hz and a rated voltage of 40.5kV.The mechanism of this circuit breaker and the arc extinguishing chamber system are designed as an integrated Siemens 3AF type spring operating mechanism, which adopts dual-purpose motors for AC and DC energy storage operation, or manual operation.This product is designed with various distances such as 35mm, 400mm, 460mm, etc.It is more convenient to use with different types of switch cabinets. It can be used in fixed cabinet XGN17-40.5, or in JYN1-40.5, KY10-40.5 cabinets.

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Product Detail

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Product Overview

ZN12-40.5 type circuit breaker is an indoor device with three-phase AC 50Hz and a rated voltage of 40.5kV.

The mechanism of this circuit breaker and the arc extinguishing chamber system are designed as an integrated Siemens 3AF type spring operating mechanism, which adopts dual-purpose motors for AC and DC energy storage operation, or manual operation.

This product is designed with various distances such as 35mm, 400mm, 460mm, etc.

It is more convenient to use with different types of switch cabinets. It can be used in fixed cabinet XGN17-40.5, or in JYN1-40.5, KY10-40.5 cabinets.

Working Environment

◆ The ambient temperature is not higher than +40 ℃ and not lower than
-10℃ (storage and transportation at – 30℃ are allowed);
◆ The altitude is not more than 1000m;
◆ The daily average value of air relative humidity is not more than 95%, and the monthly average value is not more than 90%. The daily average value of saturated vapor pressure is not more than 2.2×10-3MPa, and the monthly average value is not more than 1.8×10-3MPa;
◆ The earthquake intensity does not exceed 8 degrees;
◆There is no fire, explosion, severe pollution, chemical corrosion and severe vibration

Main Technical Parameters

No.	Item	Unit	Data
1	Rated voltage	kV	40.5	40.5
2	Rated current	A	1600	2000
3	Rated short-circuit breaking current	kA	25	31.5
4	)Dynamic steady current (peak)	kA
5	(50kA 为 3s)4s thermally stable current (50kA is 3s)	kA	25	31.5
6	Rated short-circuit closing current (peak)	kA	80	80
7	Rated short-circuit current breaking time	Times	20
8	Rated operation sequence		open-0.3s-close open-180s-close open
9	Rated lightning impulse withstand voltage (full wave)	kV	185
10	(1min)Rated short-time power frequency withstand voltage (1 min)	kV	95
11	Closing time	ms	50 ～ 85
12	Opening time	ms	40 ～ 85
13	Mechanical life	Times	10000
14	Rated current breaking times	Times	10000
15	Power storage motor power	W	∽ 275
16	Energy storage motor rated voltage	V	∽ 110 220
17	Energy storage time	S	≤ 15
18	Closing electromagnet rated voltage	V	∽ 110 220
19	Opening electromagnet rated voltage	V	∽ 110 220
20	Energy storage shunt release rated voltage	V	∽ 110 220
21	Closing interlock rated voltage	V	∽ 110 220
22	Loss-of-voltage release rated voltage	V	∽ 110 220
23	Overcurrent release rated current	A	5
24	Auxiliary switch rated current	A	DC10
25	Contact stroke	mm	25±2
26	Contact overstroke	mm	6±2
27	Closing speed	m/s	1.4±0.3
28	Opening speed	m/s	1.6±0.3
29	Contact closing bounce time	ms	≤3
30	Center distance between phases	mm	350±1.5
31	Three-phase contact closing and opening synchronization	ms	≤2
32	Resistance per phase circuit	μW	≤ 45