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Fuse Combination Unit Hv Switchgear with Earthing Switch

Basic Info

Model No.:  YFZRN25-12D/T125-31.5

Product Description

Model NO.: YFZRN25-12D/T125-31.5 Usage: Control Switch Number of Switch: Multi Control Switch Environment: Indoor High Voltage Application: Power Distribution System of Ring Net Wiring Arc-Extinguishing Principle: Vacuum Origin: Jiangyin Yunfeng, China Function: Industry, Control&Protection Device Pole: 3 Certification: SGS, ISO9001, CE Test Equipment: IEC Standard Speed: High-Speed Circuit Breaker Trademark: YF Product Overview
YFZN25(FZN25)-12 indoor AC HV Vacuum Load Switch and load switch-fuse combination unit ("combination unit")is a control and protection device for three-phase AC 50Hz, 12kV power distribution system and widely applied at the site such as industrial and mining enterprises and power distribution substations of urban buildings. It is particularly applicable for the power distribution system of ring net wiring. The operation mechanism can be manual and electric, so that the "three remote control" requirements of power system can be realized. Its performance meets requirements of GB 3804-2004 High-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV and GB 16926-2009 High-voltage alternating current switch-fuse combinations.

Model Specification
Fuse Combination Unit Hv Switchgear with Earthing Switch

Fuse Combination Unit Hv Switchgear with Earthing Switch         Fuse Combination Unit Hv Switchgear with Earthing Switch

Characteristics:
         ---compact structure
         ---long electrical endurance
         ---availability for frequent operation
         ---basically no maintenance
         ---strong breaking and making capacity
         ---safety, reliability and obvious isloating 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°


Fuse Combination Unit Hv Switchgear with Earthing Switch         

Main Technical Paramenters
Serial No. Item Unit YFZRN25-12 Load Switch-Fuse Combination Unit
1 Rated voltage kV 12
2 Rated frequency Hz 50
3 Rated current A Max.rated current of fuse 125A;
4 Rated short-circuit breaking current of fuse kA 31.5;
5 Rated breaking-transfer(handover)current A 2000
6 Rated active load breaking current A 630
7 Rated closed loop breaking current A 630
8 Rated cable charging breaking current A 10
9 Rated breaking no-load transformer capacity kVA 1600
10 Rated short-time withstand current(thermal stability current) ,load switch(including disconnector) kA/s 20/4
11 Rated short-circuit making current kA 50
12 Rated peak withstand current(dynamic stability current) kA 50
13 1 min power-frequency withstand voltage(effective value)to earth,phase-to-phase /isolating fracture kV/kV 42/48(vacuum arc-extinguishing chamber)
14 Full-wave lightning impluse withstand voltage(peak) to earth,phase-to-phase /isolating fracture kV/kV 75/85
15 Main loop resistance μΩ ≤150
16 Mechanical life Time 10000
17 Clearance between open contacts mm  
18 Overtravel(compression length of contact spring) mm  
19 Average opening speed m/s 0.6±0.2
20 Average closing speed m/s 0.9±0.2
21 Connact closing bounce time ms ≤2
22 Three-phase opening and closing asynchronization ms ≤3
23 Distance between live parts and of phase to earth mm ≥125
24 Maximum torque of manual operation N.m ≤160
25 Rated closing operation voltage V ≌220/110
26 Rated opening operation voltage V ≌220/110
27 Time of switch opening triggered by breaking of fuse ms 35±5
28 Impact output energy at breaking of fuse J(Joule) 1
Note: The sensor with live display can be used for the Switch Insulator

Selection of HV current-limiting fuse
Transformer capacity(kVA) 100 125 160 200 250 300/315 400 500 630 750/850 1000 1250 1600 2000 2500
Rated current of fuse(A) 16 16 16 20 25 31.5 40 50 63 80 80 100 125 160 200

The model of recommended fuse is XRNT-12HV current-limiting fuse;
The impact output energy of recommended fuse is:1J(Joule) middle-sized.
Fuse Combination Unit Hv Switchgear with Earthing Switch                 Fuse Combination Unit Hv Switchgear with Earthing Switch

Right operation: The conventinal L is 167; recommended cabinet is: cabinet deepth 900, width 650, height 2000.
The length L can be customized as per the customer's requirements.





 

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