12kv Zw20 630A Outdoor Vacuum Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW20
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: MCB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: VDE, ISO9001-2000
• Material: Plastic
• Rated Frequency: 50/60 Hz
• Warranty: 1 Years
• Transport Package: Wooden
• Trademark: Chenghe
• Origin: Wenzhou China
• Production Capacity: 4000 Sets/Year

Product Description

 Use:

ZW20-12 outdoor column high voltage vacuum circuit breaker is an outdoor high voltage switchgear with rated voltage of 12KV and three-phase AC 50Hz. It is mainly used to break and close the load current, overload current and short circuit current of the power system. It is suitable for substation, industrial and mining enterprises and urban and rural distribution network for protection and control, especially for places with frequent operation and automatic distribution network of domain network. This product is matched with the controller to meet the requirements of the distribution automation system and to reliably and effectively complete the traditional recloser function. It adopts the mature box-type sealing structure and is filled with SF6 gas inside. It has good sealing performance and is free from external influences. It is a maintenance-free product. The spring operating mechanism adopts a direct-drive chain main drive and a multi-stage tripping system, which has high operational reliability and is a good substitute for the circuit breaker on the column.

Environmental conditions:

1. Ambient air temperature: upper limit +60°C, lower limit -30°C;

2. Altitude: ≤3000m (if the altitude is increased, the rated insulation level will increase accordingly);

3. Amplitude: the seismic intensity does not exceed 8 degrees;

4. The daily average value of relative humidity of air is not more than 95%, and the monthly average is not more than 90%;

5. Locations without fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.

 The main technical parameters: 

NO	Item	Unit	Value
1	Rated voltage	KV	12
2	Rated frequency	Hz	50
3	Rated current	A	630
4	Rated short-circuit breaking current	KA	20
5	Rated short circuit closing current (peak)	KA	50
6	Rated dynamic current (peak)	KA	50
7	4s thermal stable current	KA	20
8	Rated operation sequence		0.3s-combined-180s-score
9	Rated storage motor voltage	V	AC220
10	Highest/lowest energy storage motor voltage	V	AC242/187
11	Rated closing operating voltage	V	AC220
12	Highest/lowest closing operating voltage	V	AC264/143
13	Rated opening operating voltage	V	AC220
14	Highest/lowest opening operating voltage	V	AC264/143
15	Closing period	ms	≤2
16	Opening different periods	ms	≤2
17	SF6 gas rated pressure (gauge pressure)	Mpa	0.01
18	Rated short circuit current breaking times	times	30
19	Mechanical life	times	10000