|Standard:||GB, IEC Standard||Function:||Switch On And Off Normal Load Current|
|Installation Location:||Power Plants||Warranty:||12 Months|
|OEM:||Yes||Package:||Exporting Standard Package|
|Rated Voltage:||7.2kV, 12kV||Rated Current:||400A 630A, 1250A, 1600A, 2000A, 2500A, 3150A|
7.2kV Air Load Break Switch,
12kV Air Load Break Switch,
2500A Air Load Break Switch
1. FN7 Type 10kv 11kv 12kv indoor air load break switch fuse unit pole mounted lbs
FN7-12 series indoor AC HV load switch is a gas-production HV load switch and fuse combination unit with arc quenching principle.It is applied in three-phase AC 50Hz power system with rated voltage 12kV for breaking the load current and making the short-circuit current.The fuse combination unit can break the short-circuit current and has the function of single-phase fuse three-phase tripping and breaking.It is the ideal selection for protecting the line, equipment and transformer. Its performance meets the requirements of national standards GB 3804-2004 High-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV and GB 16926-2009
2. Product parameter
|Serial No.||Item||Unit||YFN7-12 HV Load Switch|
|4||Rated short-circuit breaking current of fuse||kA||---|
|5||Rated breaking transfer current||A||---|
|6||Main loop resistance||μΩ||≤80|
|7||Rated active load breaking current||A||630|
|8||Rated short-time withstand current(thermal stability current)/duration||kA/s||20/4|
|9||Rated short-time withstand current(thermal stability current)/duration of earthing switch||kA/s||16/2|
|10||Rated peak withstand current(dynamic current)||kA||50|
|11||1 min power-frequency withstand voltage(effective value)to earth,phase-to-phase/isolating fracture||kV/kV||42/48|
|12||Full-wave lightning impluse withstand voltage(peak) to earth,phase-to-phase/isolating fracture||kV/kV||75/85|
|14||Rated opening operation voltage||V||---|
|15||Time of switch opening triggered by breaking of fuse||ms||---|
3. Product Characteristics
simple & reasonable structure
small operating force
reliable performance & convenient maintenance
4. Service Conditions
(2).Ambient temperature-25ºC-+ 40ºC;
(3).The daily average of relative humidity shall not be larger than 95% and the monthly average shall not be larger than 90%:
(4).The ambient air shall not be subject to the obvious pollution such as corrosive or combustible gas and steam;
(5).The site without fire hazards and explosion hazards;
(6).The site that the seismic intensity does not exceed degree 8; the gradient shall not exceed 5°
5. Technical detail
1. Send the technical data, better for all useful information; we will make a good recommendation.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.
3. Usually shipped by sea, small order or urgent order we can send you by air.
4. All our activities are accredited to ISO 14001:2015 and IEC standard.
5. Technology ensure the quality satisfy international request.