China Vacuum Circuit Breaker | Reliable Electrical Solutions

ZN63 (VS1)-12 is a 12kV indoor high voltage vacuum circuit breaker for industrial and mining enterprises, power plants and substations. It is designed for frequent operation, stable performance and easy installation, especially suitable for control and protection of high voltage power systems. It complies with several standards, such as IEC 62271-100 and GB 1984, and is able to operate within a temperature range of -40°C to +40°C, with a relative humidity of up to 95%, and is suitable for environments with an altitude of up to 1000 meters above sea level.

◆ Technical Parameters

1.1 Tekniske parametre

Item	Enhed	Reference value
Nominel spænding	kV	12
Power frequency voltage(when losing a circuit)	kV	Breaker 42
Rated insulation level Impulse withstand voltag(when losing a circuit)	kV	Breaker 75
Rated frequency	Hz	50/60
Nominel strøm	A	630/1250/1600/2000/2500/3150/4000
Nominel kortslutningsstrøm	kA	20,25,31.5,40
Nominel kortslutningsstrøm (spidsværdi)	kA	50,63.80,100
Nominel kortvarig modstandsstrøm	kA	20,25,31.5,40
Rated withstand current (peak value)	kA	506,380,100
Nødvendig operationssekvens		0-0,3s-CO-180s-CO
Rated short-circuit duration	S	4
Times of making-breaking with the rated short-circuit current	Times	30
Mekanisk levetid	Times	10000
Weight	kg	110

1.2 Mekaniske parametre

item	Enhed	Reference value
Hul i kontakterne	mm	11±1
Contact overtrave	mm	3.5±0.5
Gennemsnitlig fremstillingshastighed	mvs	0.6±0.2
Gennemsnitlig bremsehastighed	m/s	1.1±0.2
Afvisningstid ved kontaktskabelse	ms	≤2
Ikke-synkron oprettelse/afbrydelse af kontakt	ms	≤2≤3(40kA
Modstand i kredsløbet for hver fase	μ Q	≤80
Tilladt samlet slidtykkelse på den bevægelige/faste kontakt	mm	3