Fullscreen
Outdoor Vacuum Circuit Breaker MZW7-40.5

Outdoor Vacuum Circuit Breaker MZW7-40.5

Category:
  • Share:
Ask a Question

Description

 

The highest working voltage, kV: 40.5

Rated current, A: 1250, 1600, 2000, 2500

Vacuum circuit breakers MZW7-40.5 are three-phase high-voltage vacuum circuit breakers for outdoor installation, designed for switching electrical circuits under normal and emergency conditions in three-phase alternating current networks with a frequency of 50 Hz with a rated voltage of up to 35 kV. Execution options: in the painted steel or in the stainless case.

The switch can be used in substations, industrial and mining enterprises, urban and rural energy networks for protection and control, in places of frequent switching and in urban automatic distribution networks.

Device created using the latest achievements and technologies in design, insulation and processing, complies with IEC (IEC) 56, GB1984 and DL403 standards. Also, the switch has many other advantages, such as light weight and size, appearance, high reliability and lack of maintenance.

Количество просмотров 18

Parameters

 

Operating conditions of MZW7-40.5:

  1. Altitude: up to 1000 m.
  2. Ambient temperature: from -45 ° С to + 45 ° С.
  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. Service life of the circuit breaker 20 years.
  7. Warranty period from the date of commissioning — 2 years.
  8. Icing Thickness: 20mm

 

Main Parameters of MZW7-40.5-R:

Model NO. MZW7-40.5kV
Poles Number 3
Type Circuit Breaker
Function Conventional Circuit Breaker
Certification ISO9001-2000, CE, CCC
Rated Short-Circuit Duration 4s
Rated Operating Voltage 220V
Opening Distance of Contact 20-24mm
Mechanical Life 6000 times
Over Travel of Contact 4-6mm

 

Dimensions of MZW7-40.5-R:

MZW32-40-1

MZW32-40-2

Количество просмотров 18

Solutions

 

MZW7-40.5 versions with a central arrangement of the mechanism:

MZW32-40-3

 

The principle of operation of the MZW7-40.5-R

The principle of operation of the switch is based on the extinction of the electric arc that occurs when the contacts are opened in a vacuum, and the current through the vacuum chamber passes only in a short period of time when performing on and off operations. The high dielectric strength of the vacuum gap ensures reliable arc extinction. In the on position, the rated current and short circuit currents pass through the main contacts, in the off position, the main contacts open, with the formation of a visible gap.

Since switching processes occur inside the vacuum chambers, the circuit breaker does not forms emissions of products of burning the arc, both during shutdown and when turned on.

Due to the use of a longitudinal magnetic field to control the occurrence of an electric arc in a vacuum, the vacuum circuit breaker has excellent performance in terms of reliability and switching resource.

MZW32-40-4

Hot Tags: MZW7-40.5 vacuum circuit breaker, China, OEM supplier, manufacturers, factory, wholesale, Vacuum Circuit Breaker, electrical vacuum circuit breaker, ZW7, Outdoor HV Vacuum Circuit Breaker, recloser, automation, remote control, retrofit

 

#mettz #mettzgroup #mzw7 #zw7 #VCB #recloser #retrofit #35kV #disconnector

Количество просмотров 18

RelatedRelated products