24kv Grounding Switch Indoor AC Hv Vacuum Load Switch-Yfzn-24D

Model NO.: YFZN-24D/T630-20 Function: as Independent Electrical Units in Power System Environment: Indoor High Voltage Phase No.: 3 Origin: Jiangyin Yunfeng, China Applied: in The AC 50Hz Network Features: Flexible & Reliable Action Certification: ISO9001, Ce, SGS Trademark: YF Product Overview
YFZN-24/T630-20 indoor AC HV Vacuum Load Switch("vacuum load switch") and YFZRN-24D/T125-31.5 indoor AC HV vacuum load switch-fuse combination unit("combination unit") are products designs and developed independently by our company according to GB3804 and GB16926. They are applied in the AC 50Hz network with the rated voltage of 24kV and are specially designed for 24kV and users and box-type substations. They can be also applied in the power system as independent electrical units. The products have reasonable and scientific structure,flexible and reliable action and obvious isolating fracture. The combination unit can be used with the series firing-pin fuse, and the fuse is safe and easy for replacement.

                   


Model Specification
Indoor AC HV vacuum load switch




Characteristics
         a.reasonable and scientific structure
         b.flexible and reliable action
         c.obvious isolating fracture

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 Techincal Parameters

Serial No.	Item	Unint	YFZN24 Vacuum Load Switch
1	Rated voltage	KV	24
2	Rated frequency	Hz	50
3	Rated current	A	630
4	Rated short-circuit breaking current	kA	---
5	Rated active load breaking current	A	630
6	Rated closed loop breaking current	A	630
7	Rated cable charging breaking current	A	16
8	Rated short-circuit making current	kA	50
9	Rated short-time withstand current  ---Load switch(including disconnector)                                                         ---Earthing Switch	kA/s	20/4
			20/3
10	Rated breaking-transfer(handover) current	A	---
11	1min power-frequency withstand voltage(effective value) to earth, phase-to-phase, vacuum fracture/isloating fracture	kV/kV	65/79
12	Full-wave lightning impulse withstand voltage(peak)to earth,phase-to-phase, vacuum fracture/isolating fracture	kV/kV	125/145
13	Main loop resistance	μΩ	≤80
14	Rated breaking current of single capacitor bank	A	630
15	Rated back-to-back breaking current of capacitor bank	A	400
16	Mechanical life	Time	2000
17	Clearance between open contacts	m m	12±1
18	Gross thickness of contact wear	m m	3
19	Average opening speed	m/s	1.1-1.7
20	Average closing speed	m/s	0.8-1.2
21	Rated contact pressure	N	2500±200
22	Contact closing bounce time	ms	≤2
23	Three-phase opening and closing asynchronization	ms	≤1
24	Inter-pole center distance	mm	275±3
25	Distance between live parts and of phase to earth	mm	≥180
26	Closing operation torque of vacuum arc-extinguishing chamber	N. M	≤90
27	Opening operation torque of vacuum arc-extinguishing chamber	N	≤10
28	Rated opening operation voltage	V	≌220/110

Main Technical Parameters of Operation Mechanism
 Permanent-magnet Single-phase DC Engergy Storage Closing Motor

Rated Voltage	Rated Output Power	Normal Operating Voltage Range
AC/DC220V:110V	≤70W	85%-110% of rated voltage

                          

Contact us if you need more details on Load Break Switch. We are ready to answer your questions on packaging, logistics, certification or any Other aspects about Vacuum Switchgear、Grounding Switch. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : 24kV Indoor HV Load Switch