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  • VSV-40.5P Indoor High Voltage AC Vacuum Circuit Breaker
Medium Voltage Switch Element

VSV-40.5P Indoor High Voltage AC Vacuum Circuit Breaker

VSV-40.5P indoor high voltage AC vacuum circuit breaker is suitable for three-phase AC power syst...

  • Product Introduction
  • Product Features
  • Technical Parameters

Product Introduction

VSV-40.5P indoor high voltage AC vacuum circuit breaker is suitable for three-phase AC power system with the rated frequency of 50Hz and the rated voltage of 40.5kV. Boasting the ability of fast reclosing and standing frequent operations, the breaker is widely used to control and protect electrical devices in substations, power plants, industrial and mining enterprises, airports and buildings.

VSV-40.5P indoor high voltage AC vacuum circuit breaker conforms to such national standards as GB 1984-2014 High Voltage AC Circuit Breaker, JB/T3855-2008 High Voltage AC Vacuum Circuit Breaker, DL/T 403-2000 Technical Requirements on Ordering 12kV~40.5kV Indoor AC High Voltage Vacuum Circuit Breakers and relative regulations, IEC 62271-100、IEC 60694、IEC 62271-1, of the International Electrotechnical Commission.

Product Features

Embedded Pole

The small-sized vacuum arc extinguishing chamber and other parts of the main loop are directly fixed and sealed in epoxy resin by the advanced APG craftsmanship, which not only simplifies the assembling of the pole and increases the reliability of the loop of the vacuum arc extinguishing chamber but also protects the surface of the arc extinguishing chamber from being influenced by external force and environment.

The breaker has excellent anti-corrosion performance and advanced design.

The surface of the structure parts are made by Zn-Ni alloy which has strong resistance to corrosion, salt and fog. The transmission parts are made by Ni-P alloy which has strong strength and is highly resistant to friction and corrosion. And the oilless graphite drive bearings, which have strong strength and are highly resistant to friction, come from a famous international brand INA.

The breaker is C2 class.

The re-strike probability during opening of capacitative current of the breaker is very low , meeting the requirement of C2 class.

The breaker is E2 class.

The breaker has passed all tests in Shenyang High Voltage Electrical Institute Test Center and Xi’an High Voltage Electrical Institute Test Center, meeting the requirement of E2 class. The full-capacity short circuit current during the opening of the breaker reaches 30 times.

The breaker is M2 class.

The breaker has mature integrated operation mechanism which is stable and reliable and has long mechanical life. Being able to be used in occasions that require frequent operations, the breaker meets the requirement of M2 class with the mechanical life reaching 20,000 times.

The breaker is fitted with excellent buffer.

The specially designed buffer reduces overthrow in opening and bouncing in closing and extends the mechanical life of the breaker.

The breaker is installed with the insulated tension pole made by nylon.

The insulated tension pole is made by imported nylon 66 added with glass fiber, guaranteeing strength and flexibility as well as electrical performance of the breaker.

Technical Parameters

Item Title Unit Date
1 Rated voltage KV 40.5
2 Rated insulation level power frequency withstand voltage (1 min) 95
Lightning impulse withstand voltage (peak) 185
3 Rated curren A 630, 1250, 1600, 2000, 2500
4 Rated short circuit breaking current KA 25 31.5
5 Rated short circuit making current (peak) 63 80
6 Rated operating sequence O-0.3s-CO-180s-CO
7 Rated out-of-phase breaking current KA 6.25 8
8 Rated short-circuit breaking current in different phase 21.7 27.4
9 DC component rated short-circuit breaking current ≤51%
10 Rated Back to back capacitors circuit breaking current A 400
Rated Single capacitor circuit breaking current 630
11 Rated short-circuit breaking duration s 4
12 Rated short circuit breaking times Times 30
13 Break time ms ≤80
14 Mechanical life Times 20000
15 Mass of circuit breaker complete kg 350 390