VBP-12 enclosed column type vacuum circuit breaker

VBP-12 enclosed column type vacuum circuit breaker

First, the VBP-12 enclosed column type indoor medium voltage vacuum circuit breakers, vacuum circuit breakers for VBP-12 in the air as insulated indoor switches for 50HZ, rated voltage 12KV and below the grid and from the control Protective effects, VBP-12 vacuum circuit breaker has a very good performance at work and the need for frequent short-circuit breaking current situation, to fully meet the requirements of automatic reclosing and has high reliability and service life. For power plants, substations and industrial and mining enterprises, control and protection of electrical equipment to use, and suitable for frequent operation place.

VBP-12 is installed in the form of switch cabinet which can be fixed, it can be installed in a handcart.

VBP-12 can be installed in KYN28, KYN96 switch cabinet or in supporting other armored counters in the home: it can provide the rated current of 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A embedded pole vacuum circuit breaker can be installed in 800mm, 1000mm wide cabinet switchgear.

Two, VBP-12 enclosed column type vacuum circuit breaker in line with GB, IEC and DL standards and norms; GB / T1022, the common technical requirements IEC60694 voltage switchgear and control equipment standards; GB1984, DL403, JB3855 AC high voltage circuit breaker.

VBP-12 embedded pole selection of high anti-cracking, high glass transition temperature epoxy resin manufacture; conductive member design margin large, low working temperature; interrupter outdoor package has high mechanical properties, high pressure LIM silicone rubber buffer layer, to reduce stress and maximize product of resistance to thermal shock resistance. Selection of high anti-cracking, high glass transition temperature epoxy resin manufacture; conductive member design margin large, low working temperature; interrupter outdoor package has high mechanical properties, high pressure LIM silicone rubber cushioning layer to reduce stress and maximize improve product resistance to thermal shock resistance.

Three, VBP-12 enclosed column type vacuum circuit breaker can be equipped with special advance mechanism, composition Handcart unit, can also be used in a fixed installation unit. Breaker is equipped with reliable interlock unit, switch cabinet to meet the "Five Anti" protection. It also has the following advantages:

1 superior device performance, so that the circuit breaker mechanical life of up to 30,000 times

2 by type testing authority, the full capacity of the short-circuit breaking current 50 times

3 breaking rated short-circuit current of the DC component of up to 57%

4 by 1.1 times the rated current temperature rise test

5 strong environmental tolerance

6 interchangeability

7 excellent corrosion resistance

8 stable performance

9 by authority type test verification

Integrated high performance 10

Actuator

VBP-12 enclosed column type vacuum circuit breaker operating mechanism is Northern Electric developed a new generation spring operating mechanism has a simple structure, reasonable design, mature and reliable, long life, maintenance and other prominent features.

Spring operating mechanism VBP-12 type solid-sealed vacuum circuit breaker used is based on the spring as the energy storage element, body parts using special materials and technology to ensure high reliability institutions.

Energy storage closing VBP-12 enclosed column type vacuum circuit breaker operating mechanism, opening a small unit integrated into each module, simple, reliable, easy installation and maintenance.

VBP-12 enclosed column type vacuum circuit breaker only the ratio of the non-insulated solid seal better point, but also has good moisture-proof, anti-condensation properties, suitable for hot and humid regions.

But there is no non-thermal solid sealing better. General Design Institute based on the use of environmental decisions, so I think as long as moisture is a big place basically to use solid sealing, but the rated current is not too large, too large vacuum tube temperature is difficult to quickly dispersed.

Sixth, what is solid seal pole?

Conductive parts associated vacuum interrupter and circuit breakers while embedded in an epoxy resin is formed such easily curable solid insulating material pole, so that the whole circuit breaker poles become an integral part.

Embedded pole has the following advantages:

1, is a modular design, simple structure, removable small parts, high reliability;

2, the insulating rod is a high capacity. It will become the surface of the insulating dielectric volume, compared to air insulation, reducing the impact on the environment, greatly improving the dielectric strength.

3, it can shrink the size of the circuit breaker, is conducive switchgear miniaturization.

4, before the insulating housing general vacuum interrupter chamber exposed to the air, there was outside dust, moisture contamination problems. To reduce the effect of this vacuum interrupter housing requirement of sufficient length, which affects not only the size of the vacuum interrupter, but also affect the performance and reliability of the vacuum interrupter chamber. Embedded pole has the following advantages: Compared with conventional assembled pole, solid pole closure of a significant reduction in the number of parts, lap-plane conductor group reduced to three from six groups of eight bolts is reduced to 1 to 3 a, (see figure VII) simple structure greatly improves the reliability of the circuit breaker; the vacuum interrupter is embedded in the solid material, there is no need to do any further processing, embedded pole to reach high dielectric strength; vacuum interrupter is embedded in the solid material, the influence of the external environment on the pole vacuum interrupter chamber is reduced to a minimum.