Item: VD4/S
Indoor fixed type vacuum circuit breaker
Standards and specifications
Switchgear manufacture
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.
• GB1984-2003
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.
Operating conditions
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:
–Maximum +40℃
–Maximum24 hour average +35℃
–Minimum (according to “minus5 indoor class”) –5℃
• Humidity:
–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.
Specialoperating conditions:
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.
• Climate:
–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
++++Technical data:
No. | Item | Unit | Parameters | |
1 | Rated voltage | kV | 12/17.5 | 24 |
2 | Rated frequency | Hz | 50/60 | |
3 | Rated current | A | 630/800/1250/1600 | |
4 | 1min Power frequency withstand voltage | kV | 38/42/45 | 50 |
5 | Lightning impulse withstand voltage | kV | 75/95 | 125/150(*) |
6 | Rated short circuitbreaking current (peak) | kA | 50/63/80 | |
7 | Rated shortbreaking current | kA | 20/25/31.5 | |
8 | Rated short circuit making current (peak) | kA | 50/63/80 | |
9 | Cable chargebreaking current in earthing fault | A | 20 | 20 |
10 | Rated withstand current (peak) | kA | 50/63/80 | |
11 | Short time withstand current (4s) | kA | 20/25/31.5 | |
12 | Mechanism life | times | 10000 | |
13 | Operation sequence | O-0.3-CO-180S-CO | ||
14 | Rateof riseof transient recovery voltage | kV/uS | 0.34/0.42 | 0.47 |
15 | Peak of transient recovery voltage | kV | 20.6/30 | 41 |
Guideline values for function times:
No | Item | Unit | Parameter | |
1 | Closing time approx | ms | 60ms | |
2 | Opening time approx | ms | Less than45ms | |
3 | Arcing time (at50Hz) | ms | Less than15ms | |
4 | Breaking time | ms | Less than 60 ms | |
Minimum command | ||||
5 | T ime on closing | ms | 20ms(¹)(120ms(²)) | 35ms(¹)(70ms(²)) |
6 | Time on opening | ms | 20ms(¹)(80ms(²)) | 20ms(¹)(50ms(²)) |
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.