12kV High Voltage Vacuum Interrupter for Vacuum Circuit Breaker

Model NO.: TD-12/630(1250)-20(25) (VAC305(A)) вакуумный прерыватель
Delivery: FOB
Minimum order quantity: 1 piece

Quantity:

Product Description

Basic Info.

Model NO.	TD-12/630-20(VAC305) TD-12/1250-25(VAC305A)
Poles Number	3
Certification	ISO9001-2000, CE, CCC
Power Frequency Withstand Voltage	42kV
Lightning Impulse Withstand Voltage	75kV
Mechanical Life	10,000 times
Rated Clearance Between Open Contacts	7.5~9.5mm
Rated Contact Stroke	3~4mm
Trademark	VACEM
Origin	Wenzhou, China

Vacuum interrupter for vacuum circuit breaker
TD-12/630-20(VAC305)
TD-12/1250-25(VAC305A)

1.General description

Product features:

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 used for VZW32 series 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	630/1250
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	20/25
Rated peak withstand current	kA	50/63
Rated short-circuit making current	kA	50/63
Rated short-time withstand current	kA	20/25
Rated short-circuit duration	s	4
Rated single capacitor bank breaking current	A	630
Rated back to back capacitor bank breaking current	A	400
Breaking operations of rated short circuit breaking current	times	30
Mechanical life	times	10000
Contact closing force due to bellows and atmosphere	N	90±30
Force required to hold contact open at full stroke	N	150±40
Circuit resistance at lowest rated contact force	μΩ	≤25/≤20
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10-3
Weight of moving parts	kg	0.6/0.65
Storage life	year	20

Specification 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±200/2500±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