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MVS9-35-(ZN85e)

Vacuum Circuit Breaker MVS9-35 (ZN85e)

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Description

 

MVS9-35 (ZN85e) — 35 (40.5)kV indoor M.V. vacuum circuit breaker is suitable for the power system tri-phase AC 50Hz, rated voltage 36(40.5)kV, for industrial and mining enterprises power plants and substations, as the division of load current, overload current, fault current purposes.

A unique feature of the MVS9-40.5 vacuum circuit breaker is its innovative upper and lower structure. This design efficiently minimizes the depth of the circuit breaker, thus enhancing the ease of installation and use. A spring-operating mechanism, specifically designed for this type of circuit breaker, nestles within the breaker frame, perfectly accommodating the breaker’s top and bottom design.

This feature forms an integral part of the overall simple structure of the breaker, ensuring optimal output curve and performance that meet the requirements of 36 (40.5) kV indoor vacuum circuit breakers.

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Parameters

 

Main technical parameters

Item Unit Data
Rated voltage kV 36(40.5)
Rated insulation level 1 min power frequency withstand voltage (effective) kV 95
Rated insulation level lightning impulse withstand voltage (peak) kV 185
Rated frequency Hz 50
Rated current A 1250, 1600, 2000
4s rated short time withstand current kA 25, 31.5
Rated peak withstand current kA 63, 80
Rated short circuit breaking current kA 25, 31.5
Rated short circuit making current kA 63, 80
Rated operation sequence O-0.3s-CO-180s-CO
Breaking times of rated short circuit breaking current times 20
Rated capacitor bank breaking current A 630
Mechanical life times 10000

 

After the overall adjustment of the circuit breaker, it shall meet the parameter requirements:

Item Unit Data
Clearance between open contacts mm 18±1
Over travel mm 4±1
Contact limit erosion of over travel mm 3
Average closing speed m/s 1.0-1.6
Average opening speed (contact separation 12mm) m/s 1.3-1.7
Contact bouncing duration at closing operation ms ≤3
Three phase contact closing non-simultaneity of contacts ms ≤2
Three phase contact opening non-simultaneity of contacts ms ≤2
Maximum rebound during opening mm ≤3
Buffer stroke mm 13±1
Circuit resistance μΩ ≤65

 

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Solutions

 

METTZ Group has more than 10 modification of the MVS9-40.5 vacuum circuit breaker with different structure.

MVS9-40.5

 

Normal using condition

  1. Ambient temperature ≤+40℃；average in 24 hours≤+35℃, ≥-15℃；
  2. Humidity: daily average <95%, monthly average<90%; daily average saturated vapor pressure<2.2kPa, monthly average saturated vap or pressure≤108kPa;
  3. Altitude: ≤1000m;
  4. The surrounding air is not obviously polluted by dust, smoke, corrosive or inflammable gas, vapor, or salt-frog;
  5. Outer vibration of switch external and controller can be ignored;
  6. Electromagnetic interference in the amplitude of the second system ≤16kV.

Unravelling the MVS9-40.5 (ZN85e) Vacuum Circuit Breaker

Engineered for robustness and reliability, the MVS9-40.5 (ZN85e) type indoor medium voltage (M.V.) vacuum circuit breaker is an exemplary solution for power systems operating on a three-phase AC current at 50Hz and rated voltage of 36(40.5)kV. Developed with the intent of serving industrial and mining enterprises, power plants, and substations, it proves indispensable for the division of load current, overload current, and fault current.

With these comprehensive specifications, the MVS9-40.5 Indoor Medium Voltage Vacuum Circuit Breaker provides businesses with unparalleled protection and control for their power systems, ensuring continuity and efficiency in their operations.

Whether you are engaged in industrial production, mining, or any other business with significant power load requirements, the MVS9-40.5 is a premium choice for safeguarding your power systems.

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