Yfzrn25-12D/T125-31.5 AC Hv Vacuum Load Switch with Fuse Combination Unit
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
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°
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.
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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Product Categories : HV Load Break Switch With Fuse
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