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Home > Products > 24kV Indoor HV Load Switch > 24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r

24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r

Basic Info

Model No.:  YFN18-24R/ -31.5

Product Description

Model NO.: YFN18-24R/ -31.5 Certification: ISO9001-2008, Ce, SGS Test Equipment: IEC Standard Trademark: YF Operation Model: Manual or Electrical Operation Arc Extinction Principle: Air-Compressing Environment: Indoor High Voltage Origin: Jiangyin Yunfeng, China YFN18-24kV
Product Overivew
YFN18-24kV series indoor AC HV load switch is manufactured according to ABB's technology. It works under the air-compressing arc extinction principle.Beacuse of its unique structural design, it can make full use of the air-compression extinguishing arc generated in the tripping process of switch. It is applied in the HV AC 12kV network with the frequency of 50HZ for opening, closing the load current, overload current and making the short-circuit current. Together with the HV current-limiting fuse and trip device, it combines YFN18-24R series indoor AC HV load switch-fuse combination unit, which can reliably disconnect the rated short-circuit current.

24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r                24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r


Model Specification
24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r

Service Conditions
         1.Altitude≤1000m;
          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°

Main Technology Parameters
Serial No. Item Unit YFN18-24R HV Load Switch-Fuse combination unit
1 Rated voltage  kV 24
2 Rated frequency Hz 50
3 Rated current A Max.rated current of fuse equipped:125A
4 Rated active load breaking current A 630
5 Rated closed loop breaking current A 630
6 5% rated active load breaking current A 31.5
7 Cable charging current A 10
8 1min power-frequency withstand voltage(effective value) to earth, phase-to-phase/isloating fracture kV/kV 65/79
9 Lightning impulse withstand voltage(peak)to earth,phase-to-phase/isolating fracture kV/kV 125/145
10 Rated short-time withstand current(thermal stability current)/duration kA/s 20/3
11 Rated short-time withstand current(thermal stability current)/duration of Earthing Switch kA/s 20/2
12 Rated peak withstand current(dynamic stability current) kA 50
13 Rated short-circuit making current(peak) kA 50
14 Rated short-circuit breaking current(current-limiting fuse) kA 31.5, 40, 50
15 Rated transfer current A 1200
16 Time of switch opening triggered by breaking of fuse  ms 35±5
17 Impact output energy at breaking of fuse J(Joule) 1
18 Opening closing operation torque of load switch Nm 80
19 Opening closing operation torque of earth switch Nm 35
20 Mechnical life Time 2000
21 Phasing spacing mm 275

24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r        24kv Series Fuse Combination Switch Load Break Switch-Yfn18-24r
 

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Product Categories : 24kV Indoor HV Load Switch

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