Vacuum Contactor For Power Substation

NegotiableUpdate on October 06

Model

Nature of the Manufacturer: Other

Product Category: Vacuum Contactor

Place of Origin: City, Province

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Overview

Vacuum contactor uses vacuum interrupter to extinguish arc to frequently connect and cut off normal working current. It is usually used for 6-40.5kV system AC motor in long distance connection and disconnection.

Product Details

Product description

Vacuum contactors utilize vacuum bottle encapsulated contacts to suppress the arc. This arc suppression allows the contacts to be much smaller and use less space than air break contacts at higher currents. As the contacts are encapsulated, vacuum contactors are used fairly extensively in dirty applications, such as mining.

Vacuum contactors are only applicable for use in AC systems. The AC arc generated upon opening of the contacts will self-extinguish at the zero-crossing of the current waveform, with the vacuum preventing a re-strike of the arc across the open contacts. Vacuum contactors are therefore very efficient at disrupting the energy of an electric arc and are used when relatively fast switching is required, as the maximum break time is determined by the periodicity of the AC waveform.

Main technical parameter

Model	JCZ5-7.2/160	JCZ5-7.2/250	JCZ5-7.2/400	JCZ5-7.2/630
Rated voltage(kv)	7.2
Rated current(A)	160	250	400	630
Main circuit joint capability(A/100 times)	1600	2500	4000	6300
On-off capability of main circuit(A/10times)	1280	2000	3200	5000
Limit breaking capacity(A/3 times)	3200	4000	4500	6300
Mechanical life(Ten thousａnd times)	100
Mechanical lock life(Ten thousａnd times)	10
Main circuit power frequency voltage withstand(kV)	32
Auxiliary circuit power frequency voltage withstand(kV)	2.5
Power frequency voltage withstａnd of control circuit(kV)	2
Rated operating frequency(times/h)	300
Frequency of mechanical lock operation(times/h)	30
Contact opening(mm)	4±0.5
Overrange(mm)	1.5±0.3

By summarizing the user's experience for many years and combining with the company's rich design experience, the company redesigned the original product, which greatly improved the appearance, performance index, reliability and ease of use and maintenance of the product. It can be reliably used for the switching of capacitive load (ac-6a for transformer and ac-6b for capacitor bank).
Users are welcome to choose to use.

Professional, Creative, Good quality and Excellent service

Welcome your inquiry, Welcome our cooperation!