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MVS2-12-(ZN63е)

Vacuum Circuit Breakers MVS2-12 (ZN63е)

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Description

 

Designed for rigorous industrial applications, the MVS2-12 (ZN63e) and its enhanced version, MVS6-12 (ZN83e), serve as reliable indoor medium-voltage vacuum circuit breakers. Created to fulfill the needs of various sectors including industrial and mining enterprises, power plants, substations, and electrical facilities, these vacuum circuit breakers provide durability where frequent operations are required.

MVS2-12

In conclusion, METTZ Group’s MVS2-12 (ZN63e) is more than just a circuit breaker; it’s a technology-driven solution offering high performance, robust construction, and adaptability.

Its range of features ensures that it can be tailored to suit a multitude of industrial applications, providing peace of mind for those seeking a long-lasting, reliable solution.

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Parameters

 

Main Technical Data

Rated voltage6-10 kV
Maximum working voltage12 kV
Rated currentOptions ranging from 630A to 4000A
Dielectric strength42 kV at 50 Hz industrial frequency
Test voltage of full lightning discharge75 kV
Symmetrical short-circuit breaking current16,20,25,31.5,40,50 kA
Nominal peak value of permissible through current40,50,63,80,100,125 kA
Thermal resistance current (4s)16,20,25,31.5,40,50 kA
Rated switching cycle0-0.3s-v0-180s-v0
Mechanical cycle life10,000 — 20,000
Switching TimesClosing <70ms, Opening <45ms, Off time <60ms
Power of the inclusion coil250 VA
Trip coil power250 VA

 

Vacuum Circuit Breakers’ Purpose and Applications

The MVS2-12 (ZN63e) is engineered for three-phase alternating current networks operating at a frequency of 50 Hz and a rated voltage of 6 -10 kV. These breakers can be deployed in switchgear, switchgear cubicles, and are designed for transverse arrangement in a cell relative to busbars.

 

Usage and Environmental Conditions

AltitudeUp to 1000 m
Temperature-25 °C to + 40 °C
HumidityDay and monthly averages of 95% and 90% respectively
Seismic resistanceUp to 8 points
EnvironmentNon-explosive, free from aggressive gases, vapors, or dust
Reliability RequirementsVarious mechanical and switching resistance cycles
Warranty2 years from commissioning
Lifespan20 years
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Solutions

 

Innovative Design for Enhanced Performance

One of the distinctive design aspects of this switch is the transverse pole arrangement. It offers convenient access for installation and maintenance, and the closing spring-driven operation ensures efficiency. Arc extinction is executed by vacuum interrupter chambers (VI), with fractions of microseconds restoring the voltage between contacts.

 

Robust Construction

The circuit breaker consists of three poles fixed to the housing, all constructed with insulating material to allow embedding in cells with limited space. Each pole houses a vacuum arrester, a preloading mechanism, and current outputs.

 

Spring Drive Efficiency

Equipped with a spring drive with low current consumption, this design involves an electric motor, a switching spring, a breaking electromagnet, and other key components. It offers direct current operational power supply, with diode bridges installed for alternating current needs.

Количество просмотров 99

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