zw3m-12 Outdoor High-voltage Fast Permanent Magnet Vacuum Circuit Breaker

Zw3m-12 outdoor high-voltage fast permanent magnet vacuum circuit breaker is an outdoor distribution vacuum circuit breaker with rated voltage of 12kV and three-phase AC 50Hz. Outdoor high-voltage vacuum circuit breaker is a new generation of outdoor column vacuum circuit breaker developed to meet the needs of smart grid.

Feature

An Outdoor Distribution Vacuum Circuit Breaker with Rated Voltage of 12kv and Three-Phase Ac 50hz

A New Generation of Outdoor Column Vacuum Circuit Breaker Developed to Meet The Needs of Smart Grid

Used to Switch Loads of Different Properties and Frequent Operations, and Has The Ability to Break Short-Circuit Current for Many Times

Can be Used as The 10kv Side Outgoing Line of The Main Transformer of The Substation and The Switch on The Column of The Distribution Network.

The Preferred Equipment to Realize The Intellectual, Automation and Miniaturization of The Distribution Network

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Product Introduction

Product overview

---Zw3m-12 outdoor high-voltage fast permanent magnet vacuum circuit breaker is an outdoor distribution vacuum circuit breaker with rated voltage of 12kV and three-phase AC 50Hz.

---Outdoor high-voltage vacuum circuit breaker is a new generation of outdoor column vacuum circuit breaker developed to meet the needs of smart grid.

--- It is used to switch loads of different properties and frequent operations, and has the ability to break short-circuit current for many times.

---It can be used as the 10kV side outgoing line of the main transformer of the substation and the switch on the column of the distribution network.

---It is the preferred equipment to realize the intellectual, automation and miniaturization of the distribution network.

Product photo

Technical parameters

Item	Unit	Parameter
Rated voltage	kV	12
Rated current	A	630/1250
Rated frequency	Hz	50
Rated lightning impluse withstand voltage(peak)	kV	ground 75/fracture 85
Rated short-time power frequency withstand voltage(1min)	kV	wet test 34/ dry test 42/ fracture 48
Rated short-circuit breaking curent	kA	25
Rated short-circuit breaking curent times	Times	30
Rated short-time withstand current	kV	25
Rated short circuit duration	s	4
Rated peak withstand current	kA	50
Rated short-circuit making current	kA	50
Power frequency withstand voltage of secondary circuit(1min)	kV	2
Rated operating sequence		O-0.3s-CO-180S-CO
Mechanical life	Times	30000

Working conditions

1. Ambient air temperature: upper limit + 70 ºC, lower limit - 40 ºC

2. Air relative humidity: the daily average value shall not be greater than 95%, and the monthly average value shall not be greater than 90%;

3. Altitude: < 2000m;

4. Wind pressure: no more than 700pa (equivalent to wind speed of 34m / s)

5. Pollution level: Class V (specific creepage distance ≥ 31mm / kV)

6. Icing thickness: ≤ 10mm;

7. Seismic intensity: ≤ 8 degrees;

8. Installation site: there shall be no fire, explosion hazard, serious pollution, chemical corrosion and violent vibration.

Main Functions

1. protection: it is equipped with three-stage voltage blocking directional overcurrent protection, inverse time overcurrent protection, zero sequence protection, acceleration protection, overload protection, low-frequency load shedding, low-voltage splitting and three-phase triple reclosing;

2. Measurement: three-phase voltage, current, power factor, frequency, etc;

3. control function: automatic reclosing, local control and remote control can be set

4. Communication function: standard RS232, RS485 or Ethernet interface, supporting optical fiber, distribution network carrier, wireless, twisted pair and other communication modes, GPRS short message or communication, etc;

5. Other functions: local display, parameter setting, fault recording and alarm, etc.