12kv High Voltage Vacuum Interrupter for Vacuum Circuit Breaker

China 12kv High Voltage Vacuum Interrupter for Vacuum Circuit Breaker, Find details about China Vacuum Interrupter, Hv Vacuum Interrupter from 12kv High Voltage Vacuum Interrupter for Vacuum Circuit Breaker

Basic Info.

Model NO.

TD-12/630-20(VAC304)

Poles Number

Type

Circuit Breaker

Certification

ISO9001-2000, CE, CCC

Power Frequency Withstand Voltage

42kv

Lightning Impulse Withstand Voltag

75kv

Mechanical Life

10000 Times

Rated Clearance Between Open Contacts

7.5~9.5mm

Rated Contact Stroke

3~4mm

Trademark

VACEM

Origin

Wenzhou, China

Model NO.

TD-12/630-20(VAC304)

Poles Number

Type

Circuit Breaker

Certification

ISO9001-2000, CE, CCC

Power Frequency Withstand Voltage

42kv

Lightning Impulse Withstand Voltag

75kv

Mechanical Life

10000 Times

Rated Clearance Between Open Contacts

7.5~9.5mm

Rated Contact Stroke

3~4mm

Trademark

VACEM

Origin

Wenzhou, China

Product Desciption

Vacuum interrupter for vacuum circuit breaker
TD-12/630-20(VAC304)

1.General description
12kV series vacuum interrupter adopts a ceramic insulating shell, a middle sealing or built-in fixed shielding tube, and copper and chromium alloy contact material. Optimizations of the structure design of the cup-shaped longitudinal magnetic electrode makes the electromagnetic field distribution uniform, reasonable, and improve the stability of the breaking capacity. Special sophisticated process improves the insulation level of the product.
Application:
In order to meet the requirement of customers, VACEM introduced two series of 12kV vacuum interrupter (for air insulation, embedded insulation or need external insulation protection ) to match with relevant indoor&outdoor vacuum circuit breaker or vacuum distribution device. It is especially useful as control and protection device in the transmission and distribution electrical power grids with frequency 50Hz/60Hz, rated voltage 12kV, rated current 630A-4000A, rated short circuit breaking current 5kA-40kA.
VI is mainly applied to 12kV series RMU MV vacuum circuit breaker.
Meets or exceeds the requirement of IEC62271-100 and E2 level in GB1984-2003.

2.Main technical parameter
Specification of VI

Parameter item	Unit	Data
Rated voltage	kV	12
Rated current	A	630
Rated frequency	Hz	50/60
Rated short-time power frequency withstand voltage(1 min)	kV	42★
Rated lightning impulse withstand voltage	kV	75★
Rated short-circuit breaking current	kA	20
Rated peak withstand current	kA	50
Rated short-circuit making current	kA	50
Rated short-time withstand current	kA	20
Rated short-circuit duration	s	4
Rated single capacitor bank breaking current	A	400
Rated back to back capacitor bank breaking current	A	400
Breaking operation of rated short circuit breaking current	times	30
Mechanical life	times	10000
Contact closing force due to bellows and atomsphere	N	110±40
Force required to hold contact open at full stroke	N	200±50
Circuit resistance at lowest rated contact force	μΩ	≤25
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10^-3
Weight of moving parts	kg	0.7
Storage life	year	20

42★ and 75★ listed in the table is the withstand voltage indicator in insulation medium,and it is 28kV and 50kV respectively in the air.

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	8.5±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Rated contact pressure	N	2000±200
Contact bouncing duration at closing operation	ms	≤2
Closing and opening non-simultaneity of contacts	ms	≤2
Maximum rebound during opening	mm	≤2
Rated contact stroke	mm	3.5±0.5