Vacuum Interrupter 7.2kV (VAC203)

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DESCRIPTIONMain technical parameter

Model NO.	TJC-7.2/630(VAC203)
Poles Number	3
Certification	ISO9001-2000, CE, CCC
Power Frequency Withstand Voltage	32kV
Lightning Impulse Withstand Voltage	60kV
Mechanical Life	300,000 times
Rated Clearance Between Open Contacts	4~6mm
Rated Contact Stroke	1.5~2.5mm
Trademark	VACEM
Origin	Wenzhou, China

Vacuum interrupter for MV vacuum contactor
TJC-7.2/630(VAC203)

1.General description

VACEM main products include vacuum interrupter, embedded pole etc. electrical products. Vacuum interrupter is ceramics type, and the range of voltage is from 1.14kV to 40.5kV, current from 63A to 4000A, rated short circuit breaking current from 2kA to 40kA. VACEM products are complied with relevant national standards and international standards (GB standards and IEC standards). After three large scale technical transformation, introducing advanced production processing equipment from Germany and the United States, VACEM has the first-class technology equipment and perfect testing means, and products with the characteristic of standardization, seriation, miniaturization, specialization. For the meantime, VACEM has an experienced R&D team, and a complete , mature R&D program, a special department to organize the development of new products. In order to accurately grasp the development trend of industry technology , VACEM establishes a long-term good relation of cooperation with other well-known domestic and foreign institutions, and carry out technical exchanges with the international well-known enterprises to jointly develop the key products leading the market trend.

VI is mainly applied to VCKG3/VJCZ5 and VCZG1-7.2 series MV AC vacuum contactor.
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	7.2
Rated current	A	250/630
Rated frequency	Hz	50/60
Rated short-time power frequency withstand voltage(1 min)	kV	32
Rated lightning impulse withstand voltage	kV	60
Rated connecting current	kA	6.3
Rated breaking current	kA	5.04
Rated maximum sectional current	kA	6.3
Rated minimum sectional current	A	120
Rated short-time withstand current	kA	6.3
Rated short-circuit duration	s	4
Mechanical life	ten-thousand times	30
Rated breaking time AC3	ten-thousand times	15
Rated breaking time AC4	ten-thousand times	6
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 rated contact force	μΩ	≤50
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10^-3
Weight of moving parts	kg	0.4
Storage life	year	20

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	5±1
Average opening speed	m/s	0.6±0.2
Average closing speed	m/s	0.3±0.1
Rated contact pressure	N	110±20
Contact bouncing duration at closing operation	ms	≤2
Closing and opening non-simultaneity of contacts	ms	≤2
Rated contact stroke	mm	2±0.5

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or use the following enquiry form. Our sales representative will contact you soon. Thank you for your interest in our products.

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