Outdoor Vacuum Circuit Breaker MZW37-40.5

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Description

 

The highest working voltage, kV: 40.5

Rated current, A: 630, 1250, 1600, 2000, 2500

Vacuum circuit breakers ZW37-40.5 three-phase high-voltage vacuum circuit breaker for outdoor installations designed to switch electrical circuits under normal and emergency conditions in three-phase mode with a frequency of 50 Hz at a rated voltage of up to 35 kV.

The switch can be used in substations, industrial and mining enterprises, in cities and in power systems for protection and control, in places of frequent switching and in city automatic distribution networks.

The use of the latest achievements and technologies complies with IEC (56), GB1984 and DL403 standards.

The steel of the drive cabinet and control cabinet are made of stainless steel and do not require painting during operation.

Operational power supply of all drive elements is carried out on an ongoing basis, if necessary. Depending on the order, the circuit breaker can be disconnected from direct or alternating current. Current transformers can be made on four windings.

Parameters

 

Operating conditions of ZW37-40.5:

  1. Altitude: up to 1000 m.
  2. Ambient temperature: from -45 ° C to + 45 ° 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. Environment is not explosive, does not spread dust, aggressive gas and steam in areas that destroy metal and insulation.
  6. Lifetime of the circuit breaker 25 years.
  7. The warranty is valid for 2 years.
  8. Icing Thickness: 20mm

Dimensions of ZW37-40.5:

MZW37-40-1

MZW37-40-2

Solutions

 

Mounting Options ZW37-40.5:

MZW37-40-3

The principle of operation of the switch ZW37-40.5

The principle of operation of the switch is based on the suppression of electrical energy, when the contacts open in a vacuum. The high dielectric strength of the vacuum gap ensures reliable arc extinction. In the on position, a transition occurs between the main contacts, in which the main contacts open, with the formation of a visible gap.

The switch is disconnected inside the vacuum chambers, the switch is not

It forms certain products of arc burning, both when it is turned off and when it is turned on.

The vacuum circuit breaker has excellent reliability and switching value.

MZW37-40-4

 

The switch can be equipped with two types of controllers:

1) The TS-controller uses the function of current cutoff (TO) and the function of current protection (MTZ) and its outputs, including a direct current electromagnetic stop. Input circuits apply to current transformers. The controller is an analogue of the protective circuit included in the cheap application.

2) The GSM controller is a multifunctional device. Based on it, it is possible to perform MOT, MTZ, protection against single-phase short circuits, one, two, and three-time recloser. Carry out remote control of the circuit breaker, change settings, and receive measurements and emergency signals via mobile communications using coded SMS messages.

 

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