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MVS8-24-(ZN83e)

Vacuum Circuit Breaker MVS8-24 (ZN83e)

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Description

 

Vacuum circuit breakers MVS8-24 (ZN83e) are designed for operation in three-phase alternating current networks with a frequency of 50 Hz and a rated voltage of 20 (24) kV with isolated or compensated neutral in normal or emergency conditions.

Vacuum circuit breakers are designed for installation in switchgear and are designed for transverse arrangement in a cell relative to busbars. They can be used both in new construction and when replacing circuit breakers of previous years of manufacture. They can be installed in the design of existing cells and can be used in the development of new products.

MVS8-24 (ZN83e) — 24kV series vacuum circuit breaker is a new indoor switchgear independently developed for 24KV power system.

The optimized modular spring operating mechanism is adopted in the mechanism part, which has high reliability, long service life and free maintenance.

MVS8-24 series vacuum circuit breaker can be used as the protection and control unit of power equipment for industrial and mining enterprises. It is especially suitable for the worse environment with frequent operation, multiple disconnection of short-circuit

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Parameters

 

Main parameters

Rated Frequency: 50-60Hz

Rated Current: 630A-3150A

Phase distance: 210mm, 275mm

Rated short circuit breaking current: 20 kA — 31.5 kA

Installation Models: Drawout type & Fixed type

Insulation Models: Embedded poles

Applications: KYN28 series, KYN44 series, RMU, box type substations.

Item Unit Data
Rated voltage kV 24
Rated frequency Hz 50
Rated insulation level 1 min power frequency withstand voltage pole to earth kV 65
Rated insulation level 1 min power frequency withstand voltage phase kV 79
Rated insulation level lightning impulse withstand voltage pole to earth kV 125
Rated insulation level lightning impulse withstand voltage phase kV 145
Power frequency withstand voltage of secondary circuit V 2000
Rated current A 630,1250, 1600, 2000, 2500, 3150
Rated short-circuit breaking current kA 20, 25, 31.5
Rated short-time withstand current kA 20, 25, 31.5
Rated short circuit duration s 4
Rated peak withstand current kA 50, 63, 80
Rated short-circuit making current kA 50, 63, 80
Rated short circuit current breaking times (class E2) times 30
Rated single/back to back capacitor bank breaking current A 630/400
Clearance between open contacts mm 12~14
Contact stroke mm 3~5
Allowable wear thickness of contact mm 3
Average opening speed m/s 1.1~1.6
Average closing speed m/s 0.6~1.1
Contact closing bounce time ms ≤2
Different phases of contact closing and opening ms ≤2
Rebound amplitude of opening contact mm ≤2
Opening time (rated voltage) ms 20~50
Closing time (rated voltage) ms 30~70
Mechanical life (M2) times 10,000(20,000)
Rated operating voltage V AC110/220  DC110/220
Rated operation sequence O-0.3s-CO-180s-CO

 

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Solutions

 

Terms of Use:

1-Altitude: up to 1000 m.

2-Ambient temperature: from -15 ° C to + 40 ° C.

3-Humidity: the average value of relative humidity during the day is not more than 95%; the average value of relative humidity during the month is not more than 90%.

4-Seismic resistance: up to 8 points.

5-The environment is not explosive, does not contain dust, aggressive gases and vapors in concentrations that destroy metal and insulation.

6-Lifetime of the circuit breaker: 25-30 years.

 

The MVS8-24 VCB: A Paradigm of Advanced Design

The ingenuity behind the MVS8-24 circuit breaker is attributed to METTZ Group’s commitment to continuous innovation in electrical technology. The company has devoted considerable research and development resources to create an advanced indoor switchgear that suits 24kV power systems, overcoming several technical challenges in the process.

The MVS8-24 adopts an optimized modular spring operating mechanism, a testament to cutting-edge design and superior engineering principles. This mechanism ensures exceptional reliability, extending the service life of the breaker and eliminating the need for constant maintenance.

 

Unparalleled Adaptability: Ideal for Tough Environments

The true strength of the MVS8-24 series vacuum circuit breaker lies in its flexibility and adaptability. It is designed to serve as a powerful protection and control unit for power equipment across various industry sectors, especially those found within industrial and mining enterprises.

In addition, the MVS8-24 (ZN83e) excels in challenging environments characterized by frequent operation and recurrent short-circuit disconnections. Its robust design allows it to endure harsh conditions and perform optimally despite continuous usage.

With these comprehensive specifications, the MVS8-24 (ZN83e) Series vacuum circuit breaker empowers businesses with unmatched power system protection and control capabilities, ensuring continuity and effectiveness in their operations.

Whether you are involved in industrial manufacturing, mining, or any other enterprise with heavy electrical load requirements, the MVS8-24 stands as a premier choice for safeguarding your power systems.

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