1.14kvvacuum Interrupter Tube for Low Voltage Circuit Breaker

• Electricity Type: AC
• Number of Pole: 3
• Phase: 3
• Main Circuit Rating Voltage: 1140V
• Main Circuit Rating Current: 400A
• Type: Ac Contactors
• Model NO.: TD-1.14/400-8(VAC300)
• Power Frequency Withstand Voltage: 10kv
• Lightning Impulse Withstand Voltage: 16kv
• Mechanical Life: 10000 Times
• Rated Clearance Between Open Contacts: 3.5~4.5mm
• Rated Contact Stroke: 1~2mm
• Transport Package: Carton
• Specification: VAC300
• Trademark: VACEM
• Origin: Wenzhou, China

Product Description

Vacuum interrupter for vacuum circuit breaker
TD-1.14/400-8(VAC300)
 

General description

Get ready to experience the cutting-edge technology of VACEM's electrical products! Our main products include the highly sought-after vacuum interrupter and embedded pole. Our vacuum interrupter is made of top-quality ceramics and boasts a voltage range of 1.14kV to 40.5kV, current from 63A to 4000A, and rated short circuit breaking current from 2kA to 40kA. 
At VACEM, we take pride in complying with relevant national and international standards (GB and IEC standards). We've undergone three large-scale technical transformations and have introduced advanced production processing equipment from Germany and the United States. As a result, we have first-class technology equipment and perfect testing means. Our products are characterized by standardization, seriation, miniaturization, and specialization. 
We have an experienced R&D team and a complete, mature R&D program, as well as a special department dedicated to organizing the development of new products. To stay ahead of the curve and accurately grasp the development trend of industry technology, we establish long-term good relations of cooperation with other well-known companies. 

One of our most popular products is the 1.14kv Vacuum Interrupter Tube for Low Voltage Circuit Breaker. This vacuum interrupter is perfect for those looking for a reliable and high-quality option for their low voltage circuit breaker. So what are you waiting for? Choose VACEM for all your electrical product needs!  VI is mainly applied to VZK1-1.14kV/400A series indoor LV 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	400
Rated frequency	Hz	50/60
Rated short-time power frequency withstand voltage(1 min)	kV	10
Rated lightning impulse withstand voltage	kV	16
Rated short-circuit breaking current	kA	8
Rated peak withstand current	kA	20
Rated short-circuit making current	kA	20
Rated short-time withstand current	kA	8
Rated short-circuit duration	s	1
Breaking operation of rated short circuit breaking current	times	30
Electrical life	times	10000
Mechanical life	times	10000
Contact closing force due to bellows and atomsphere	N	60±20
Force required to hold contact open at full stroke	N	90±30
Circuit resistance at lowest rated contact force	μΩ	≤35
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	4±0.5
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Rated contact pressure	N	600±100
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	1.5±0.5

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