12kv Embedded Pole High Voltage Vacuum Interrupter

Overview

Basic Info.

Model NO.	TD-12/1250-25(31.5)(VAC311A)
Poles Number	3
Type	Circuit Breaker
Certification	ISO9001-2000, CE, CCC
Mechanical Life	10000 Times
Rated Contact Stroke	3~4mm
Rated Clearance Between Open Contacts	8~10mm
Lightning Impulse Withstand Voltage	75kv
Power Frequency Withstand Voltage	42kv
Transport Package	Carton
Specification	VAC311A
Trademark	VACEM
Origin	Wenzhou, China

Product Description

Vacuum interrupter for embedded poleTD-12/1250-25(VAC311A)TD-12/1250-31.5(VAC311A)
General description

Introducing the 12kV Embedded Pole High Voltage Vacuum Interrupter, the ultimate solution for all your high voltage needs! This cutting-edge product is designed to provide exceptional performance and reliability, making it the perfect choice for various industrial applications.H=250mm. VI is mainly applied to VZN63-12kV series embedded pole of MV vacuum circuit breaker. Meets or exceeds the requirement of IEC62271-100 and E2 level in GB1984-2003.
The Vacuum Interrupter is the heart of any electrical circuit breaker, and our 12kV series is no exception. With its advanced features and innovative design, this interrupter guarantees efficient and safe operation, ensuring the smooth functioning of your electrical systems.
One of the standout features of our 12kV Embedded Pole High Voltage Vacuum Interrupter is its ceramic insulating shell. This high-quality shell provides excellent insulation properties, protecting the interrupter from external factors and ensuring long-lasting performance. Additionally, the middle sealing or built-in fixed shielding tube further enhances the interrupter's durability and reliability.
To ensure optimal performance, we have carefully selected copper and chromium alloy as the contact material. This combination not only enhances conductivity but also improves the interrupter's resistance to wear and tear, ensuring a longer lifespan and reducing maintenance costs.
The structure design of our 12kV Embedded Pole High Voltage Vacuum Interrupter has been optimized to deliver maximum efficiency. With its compact size and lightweight construction, this interrupter can be easily integrated into various electrical systems, saving valuable space and simplifying installation processes.
Don't compromise on quality and reliability when it comes to high voltage applications. Choose our 12kV Embedded Pole High Voltage Vacuum Interrupter and experience the difference it can make in your operations. Trust in our expertise and let us empower your business with the best-in-class products.

Main technical parameter

Specification of VI

Parameter item	Unit	Data
Rated voltage	kV	12
Rated current	A	1250
Rated frequency	Hz	50
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 short-time withstand current	kA	63/80
Rated peak withstand current	kA	63/80
Rated short-circuit making current	kA	25/31.5
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 atomsphere	N	120±50
Force required to hold contact open at full stroke	N	180±50
Circuit resistance at lowest rated contact force	μΩ	≤15
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10-3
Weight of moving parts	kg	0.85
Storage life	year	20

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	9±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Rated contact pressure	N	3100±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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