Indoor fixed type vacuum circuit breaker
Standards and specifications
The switchgear complies with the following specifications in accordance with DIN,VDE and the relevant IEC publications:
• VDE0670, part1000 and IEC60694
• VDE0671, part100, and IEC62271-100.
Installation and operation The relevant specifications are to be taken into account during installation and operation, particularly:
• DIN VDE0101, Power installations exceeding AC1 kV
• VDE0105, Operationof electrical installations
• DIN VDE0141, Earthing systems for special power installations with rated voltages above1 kV
• Accident prevention regulations issued by the appropriate professional bodies or comparable organizations.
Normal operating conditions Design to VDE 0670, part 1000, “Common specifications for high-voltage switchgear and controlgear standards“ and IECpublication60694, with the following limit values:
• Ambient temperature:
–Maximum24 hour average +35℃
–Minimum (according to “minus5 indoor class”) –5℃
–the average value of the relative humidity , measured over a periodof24 h, doesnot exceed95%
–the average value of the water vapour pressure, over a period of24 h, does not exceed2,2 kPa
–the average value of the relative humidity , over a period of one month, does not exceed90%
–the average value of the water vapour pressure, over a period of one month, does not exceed 1,8 kPa
• Maximum site altitude: ≤1000 M above sea level.
Special operating conditions are to be agreed onby the manufacturer and user . The manufacturer must be consulted in advance about each specialoperating condition:
• Site altitude over1000 m:
–Allow for the reduction in the dielectric strengthof the air .
• Increased ambient temperature:
–Current carrying capacity is reduced.
–Provide additional ventilation for heatdissipation.
–A void the risk of corrosion or other damage in areas:
• with high humidity and/or
• with major rapid temperature fluctuations.
– Implement preventive measures (e.g. electric heaters) to preclude condensation phenomena
1min Power frequency withstand voltage
Lightning impulse withstand voltage
Rated short circuitbreaking current (peak)
Rated shortbreaking current
Rated short circuit making current (peak)
Cable chargebreaking current in earthing fault
Rated withstand current (peak)
Short time withstand current (4s)
Rateof riseof transient recovery voltage
Peak of transient recovery voltage
Guideline values for function times:
Closing time approx
Opening time approx
Arcing time (at50Hz)
Less than 60 ms
T ime on closing
Time on opening
Q:How to guarantee my order and payment.
A:Ezitown has Alibaba trade Assurance,100% refundable if any quality or delivery problem.
Q:How to return the goods if meet any problem
A:we have DHL and Fedex account for return goods.buyer no need to pay any shipping cost for returning. Can contact our salesman to operate.
Q:Why Ezitown price is competitive, and quality seems rather good ?
A:because we have been manufacturing more than 20 years, we know what price and Quality buyer can sell well in market.the wholeseller have suitable profits
Q:Can we order many items and make combine shipment.
A:we can combine many items,and deliver by courier/sea/land/air etc. pack well.
Q:Can I order the cabinet/enclosure/box and the wiring material from you or other supplier,you make wiring and assembly for us ?
A:we have egineering, wiring and assembly team for low voltage/medium voltage/high voltage/DC control .can make drawing and diagram to confirmation and proceed the assembly.we have unite nation project in regular assembly.
Q:How can I make our own brand for my order
A:we supply OEM service if order quantity meet the OEM MOQ , contact to know the exactly quantity for your item
Q:What is the delivery if I make payment
A:Almost all items we keep in stock.and we have many order every day , We need 1-3 working days to packing and make delivery.OEM packing will be longer time.
Q:Can we visit your factory or office ?
A:we always welcome customer visit us, let me know the schedule, we will arrange.