Yfn18-24kv Series Indoor AC Hv Load Break Switch

Model NO.: YFN18-24/630-20 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.

Model Specification


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	YFN18-24 HV Load Switch
1	Rated voltage	kV	24
2	Rated frequency	Hz	50
3	Rated current	A	630
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	---
15	Rated transfer current	A	---
16	Time of switch opening triggered by breaking of fuse	ms	---
17	Impact output energy at breaking of fuse	J(Joule)	---
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

 

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Product Categories : 24kV Indoor HV load switch