36kV 40.5kV High Voltage Vacuum Interrupter for Load Break Switch

Model NO.: TF-40.5/1250-20(25) (VAC531(A))
Delivery: FOB
Minimum order quantity: 1 piece

Quantity:

Product Description

Basic Info.

Model NO.	TF-40.5/1250-20(VAC531) TF-40.5/1250-25(VAC531A)
Poles Number	3
Certification	ISO9001-2000, CE, CCC
Power Frequency Withstand Voltage	95kV
Lightning Impulse Withstand Voltage	185kV
Mechanical Life	10,000 times
Rated Clearance Between Open Contacts	16~18mm
Rated Contact Stroke	3~5mm
Trademark	VACEM
Origin	Wenzhou, China

Vacuum interrupter for load break switch
TF-40.5/1250-20(VAC531)
TF-40.5/1250-25(VAC531A)

1.General description

Product features:

40.5kV series vacuum interrupter adopts a ceramic insulating shell, a middle sealing or built-in fixed shielding tube, and cooper 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:

Matched with relevant indoor&outdoor vacuum circuit breaker or vacuum distribution device, it is especially as control and protection device in the transmission and distribution electrical power grids with frequency 50Hz/60Hz, rated voltage 40.5kV, rated current 630A-2500A, rated short circuit breaking current 12.5kA-31.5kA.

VI is mainly applied to VFZN21-40.5 series indoor MV load break switch.
Meets or exceeds the requirement of IEC60265-1 and E1 level in GB/T3804-2004.

2.Main technical parameter

Specification of VI

Parameter item	Unit	Data
Rated voltage	kV	36/40.5
Rated current	A	1250
Rated frequency	Hz	50/60
Rated short-time power frequency withstand voltage(1 min)	kV	95
Rated lightning impulse withstand voltage	kV	185
Rated short-time withstand current	kA	20/25
Rated peak withstand current	kA	50/63
Rated short-circuit making current	kA	50/63
Rated short-circuit duration	s	3
Rated power load breaking current	A	630/1250
Rated closed-loop breaking current	A	630/1250
Rated cable charging breaking current	A	21
Rated transfer current	A	2000
Mechanical life	times	10000
Contact closing force due to bellows and atmosphere	N	120±50
Force required to hold contact open at full stroke	N	210±50
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	1.3
Storage life	year	20

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	17±1
Average opening speed	m/s	1.6±0.2
Average closing speed	m/s	0.8±0.2
Rated contact pressure	N	1000±100/1500±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	4±1