12kv High Voltage Vacuum Interrupter for High Voltage Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Model NO.: TD-12/630(1250)-25(VAC303A);TD-12/1250-20(VAC303A)
• Poles Number: 3
• Type: Circuit Breaker
• Certification: ISO9001-2000, CE, CCC
• Power Frequency Withstand Voltage: 42kv
• Lightning Impulse Withstand Voltage: 75kv
• Mechanical Life: 10000 Times
• Rated Clearance Between Open Contacts: 10~12mm
• Rated Contact Stroke: 3~4mm
• Transport Package: Carton
• Specification: VAC303A
• Trademark: VACEM
• Origin: Wenzhou, China

Product Description

Vacuum interrupter for vacuum circuit breaker
TD-12/630-25(VAC303A)
TD-12/1250-25(VAC303A)
TD-12/1250-20(VAC303A)
 

General description

Get ready to experience the power of the 12kV series vacuum interrupter! With its ceramic insulating shell, middle sealing or built-in fixed shielding tube, and copper and chromium alloy contact material, this product is designed to deliver top-notch performance. The cup-shaped longitudinal magnetic electrode has been optimized to ensure uniform electromagnetic field distribution, making it more stable and reliable. Plus, the sophisticated insulation process takes the product's insulation level to new heights.
But that's not all - VACEM has introduced two series of 12kV vacuum interrupter to meet the diverse needs of customers. Whether you need air insulation, embedded insulation, or external insulation protection, we've got you covered. This product is perfect for use as a control and protection device in transmission and distribution electrical power grids with a frequency of 50Hz/60Hz, rated voltage of 12kV, rated current of 630A-4000A, and rated short circuit breaking current of 5kA-40kA.

So what are you waiting for? Choose the 12kV High Voltage Vacuum Interrupter for High Voltage Circuit Breaker and experience the power and reliability you deserve. VI is mainly applied to the VZN63-12kV series indoor MV vacuum circuit breaker.
Meets or exceeds the requirement of IEC62271-100 and E2 level in GB1984-2003.

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	25/31.5
Rated peak withstand current	kA	50
Rated short-circuit making current	kA	50
Rated short-time withstand current	kA	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 operation of rated short circuit breaking current	times	30
Mechanical life	times	10000
Contact closing force due to bellows and atomsphere	N	90±30
Force required to hold contact open at full stroke	N	150±40
Circuit resistance at lowest rated contact force	μΩ	≤20
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10^-3
Weight of moving parts	kg	0.8
Storage life	year	20

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	11±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Rated contact pressure	N	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

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