Vacuum Interrupters

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Description

 

The vacuum interrupter, also known as the vacuum chamber, is responsible for opening and closing current-carrying contacts. Vacuum circuit breakers have a steel arch interrupter located in the center. They are symmetrically built and stacked in ceramic insulators.

 

METTZ is in industry not only finishing products, but also vacuum interrupters and offering environmentally friendly medium and high voltage interrupters that reliably switch high stress currents robustly without the need for unreliable cooling or ventilation systems.

Vacuum interrupters provide long life and low maintenance, save space, and reduce costs. Used for repetitive switching, motor inrush current interruption, fault protection, and overcurrent and short circuit protection.

Custom Vacuum Interrupters always ready for order.

 

Parameters

 

Parameter ItemUnitData
Rated voltagekV1,14; 3; 7.2; 12; 24; 40,5
Rated currentA63-5000
Rated frequencyHz50/60
Rated short-time power frequency withstand voltage(1 min)kV42
Rated lightning impulse withstand voltagekV75
Rated short-circuit breaking currentkA16/20/25/31.5/40
Rated peak withstand currentkA100
Rated short-circuit making currentkA100
Rated short-time withstand currentkA40
Rated short-circuit durations4
Rated single capacitor bank breaking currentA630
Rated back to back capacitor bank breaking currentA400
Breaking operation of rated short circuit breaking currenttimes30
Mechanical lifetimes10 000 – 1 000 000
Contact closing force due to bellows and atomsphereN200±50
Force required to hold contact open at full strokeN300±50
Circuit resistance at lowest rated contact forceμΩ≤15
Contact limit erosionmm3
Internal gas pressurePa≤1.33×10-3
Weight of moving partskg2.7
Storage lifeyear20

 

Specifications required for matched switchgear

Parameter itemUnitData
Rated clearance between open contactsmm11±1
Average opening speedm/s1.1±0.2
Average closing speedm/s0.6±0.2
Rated contact pressureN4500±300
Contact bouncing duration at closing operationms≤2
Closing and opening non-simultaneity of contactsms≤2
Maximum rebound during openingmm≤2

Solutions

 

MTD-40.5-2000-31.5 Vacuum interrupter 40.5 kV

Vacuum Interrupters

MTD-40.5-1600-25 Vacuum interrupter 40.5 kV

Vacuum Interrupters

MTD-40.5-1250-25 Vacuum interrupter 40.5 kV

Vacuum Interrupters

MTD-12-2000-40 Vacuum interrupter 12 kV

Vacuum Interrupters

MTD-12-1600-31.5 Vacuum interrupter 12 kV

Vacuum Interrupters

MTD-12-1250-31.5 Vacuum interrupter 12 kV

Vacuum Interrupters

MTD-12-1250-25 Vacuum interrupter 12 kV

Vacuum Interrupters

MTD-12-630-20 Vacuum interrupter 12 kV

Vacuum Interrupters

MTJC-7.2-800A Vacuum interrupter 7.2 kV

Vacuum Interrupters

MTJC-7.2-630A Vacuum interrupter 7.2 kV

Vacuum Interrupters

MTJC-7.2-250A

Vacuum Interrupters

MTJC-1.14-630A

Vacuum Interrupters

MTJC-1.14-400A

Vacuum Interrupters

MTJC-1.14-250A

Vacuum Interrupters

MTJC-1.14-125A

Vacuum Interrupters

MTJC-1.14-63A

Vacuum Interrupters

In electrical engineering, a vacuum interrupter is a switch which uses electrical contacts in a vacuum. It is the core component of medium-voltage circuit-breakers, generator circuit-breakers, and high-voltage circuit-breakers. Separation of the electrical contacts results in a metal vapour arc, which is quickly extinguished. Vacuum interrupters are widely used in utility power transmission systems, power generation unit, and power-distribution systems for railways, arc furnace applications, and industrial plants.

 

Since the arc is contained within the interrupter, switchgear using vacuum interrupters are very compact compared with switchgear using air, SF6 or oil as arc-suppression medium. Vacuum interrupters can be used for circuit-breakers and load switches. Circuit-breaker vacuum interrupters are used primarily in the power sector in substation and power-generation facilities, and load-switching vacuum interrupters are used for power-grid end users.
METTZ Group stands as a consortium of Chinese electrical firms, renowned for its expertise in manufacturing electrical equipment. We are specialized in crafting a comprehensive suite of transmission and distribution equipment, covering a wide voltage range from 0.4 to 40.5 kV. Our commitment lies in delivering reliable and stable products to our clientele, encompassing vacuum circuit breakers (VCB), gas-insulated switchgear modular units (RMU), solid insulated switchgear (SIS) panels, air insulated switchgear (AIS) panels, and dry compressed air insulated switchgear panels (DIS).

Since our inception, METTZ Group has been at the forefront of adopting international cutting-edge technologies and equipment. We pride ourselves on our extensive collaboration and dialogue with leading experts in the electrical technology sector, both within China and internationally. Our offerings are tailored to meet the specific needs of our clients, including Original Equipment Manufacturer (OEM) services, customization of products to unique parameters and dimensions, all in alignment with our customers’ specifications.

METTZ Group is dedicated to innovation, quality, and customer satisfaction, ensuring that we remain a preferred partner for electrical equipment solutions worldwide.

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