VACUUM INTERRUPTER

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ELCB
• Model NO.: ZW32 ZKTD630/12-20
• Poles Number: 1
• Type: Circuit Breaker
• Function: Circuit-Breaker Failure Protection
• Certification: ISO9001-2000, CE
• Transport Package: Carton
• HS Code: 8535900090
• Production Capacity: 500000/Year

Product Description

Main Technical Data
Rated voltage	kv	12
Rated current	A	630
Rated frequency	Hz	50
Rated short-time power frequency withstand voltage(1min)	kv	42
Rated lighting impulse withstand voltage	kv	75
Rated short-circuit breaking current	kA	12.5/16/20
Rated short-circuit making current(peak)	kA	31.5/40/50
Rated operations of short-circuit breaking current interruption	times	30
Rated single capacitor bank breaking current	A	400
Rated short-time withstand current	kA	12.5/16/20
Rated peak withstand current	kA	31.5/40/50
Rated duration of short-circuit	s	4
Mechanical life	times	10000
Contact closing force due to bellows and atmosphere	N	70±40
Counterforce at rated contact stroke	N	120±50
Three-pole simultaneity	μΩ	≤20
Shelf life	years	20
Contact erosion limit	mm	3
Weight of moving parts	kg	≤0.7

Mechanical data required for matched vacuum switchgear
 

Rated contact stroke	mm	9±1
Average opening speed	m/s	1.0±0.25
Average closing speed	m/s	0.65±0.15
Added contact force	N	900/1300/1600±100
Contact bouncing duration at closing operation	ms	≤2
Contact bouncing bank amplitude of opening operation	ms	≤2
Three-pole simultaneity	ms	≤1