12kV High Voltage Vacuum Interrupter for Load Break Switch

Model NO.: TF-12/630-20(VAC501A)
Delivery: FOB
Minimum order quantity: 1 piece

Quantity:

Product Description

Basic Info.

Model NO.	TF-12/630-20(VAC501A)
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	5~7mm
Rated Contact Stroke	2.5~3.5mm
Trademark	VACEM
Origin	Wenzhou, China

Vacuum interrupter for load break switch

TF-12/630-20(VAC501A)

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 applied to VFZN25-12kV series indoor MV load break switch.
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-time withstand current	kA	20
Rated peak withstand current	kA	50
Rated short-circuit making current	kA	50
Rated short-circuit duration	s	3
Rated power load breaking current	A	630
Rated closed-loop breaking current	A	630
Rated cable charging breaking current	A	10
Rated no-load transformer breaking current	A	72.5
Rated transfer current	kA	3.15
Mechanical life	times	10000
Contact closing force due to bellows and atmosphere	N	60±20
Force required to hold contact open at full stroke	N	90±30
Circuit resistance at lowest rated contact force	μΩ	≤30
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10-3
Weight of moving parts	kg	0.3
Storage life	year	20

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	6±1
Average opening speed	m/s	1.0±0.2
Average closing speed	m/s	0.6±0.2
Rated contact pressure	N	700±100
Contact bouncing duration at closing operation	ms	≤3
Closing and opening non-simultaneity of contacts	ms	≤2
Maximum rebound during opening	mm	≤2
Rated contact stroke	mm	3±0.5