1.Application: It adopts SF6 Gas Load Break Switch as an arc extinguishing and Insulation medium. It includes three contactors for switching on and switching off. It is also for the control and protection of substation and equipments; making and breaking short-circuit current under various operating status of electric network .
2.Standards: IEC 62271-105
3.Parameters: Rated voltage: 12kV.
Rated current: 630A .
1.Easy operation and installation
2.Connection combination is simple and convenient
3.Insulation and sealed structure,
4.Reliable interlock, compact design
1 Ambient air temperature: -25°C~ +40°C
2 Altitude: ≤1000m
3 No operation in such places as subject to dust, smog, corrosive/flammable gas, vapor and salt pollution.
4 Relative humidity: Daily average ≤ 95%
Monthly average ≤ 90%
5 Water vapor pressure: Daily average ≤2.2kPa
Monthly average ≤1.8kPa
6 The external shocking and earthquake from the switchgear and control equipment could be neglected.
7 The amplitude of electromagnetic interference in the second system ≤1.6kV
Note: Customized products for other special working conditions are available on your requirements.
Type and Interpretation
1. Load switch
2 Load switch-Combination of electrical
Manual Spring operation mechanism(Fig.1)
(Operation voltage: AC220V, DC220V)
Electric Spring operation mechanism(Fig.2)
1 Data for Load Break Switch
Load switch rated short-time withstanding current/Rated short-circuit duration time
Earthing switch rated short-time withstanding current/Rated short-circuit duration time
Rated peak withstanding current and rated short-circuit making current
Rated insulation level
1min power frequency with stand voltage(Phase to earth, between poles, open contacts)
Rated lightning impulse withstand voltage(Phase to earth, between poles, open contacts)
Rated breaking current
Power load breaking current
Close loop breaking current
5% Power load breaking current
Breaking cable charge current
Breaking no-load transformer capacity
Breaking transfer current
Expected short-circuit breaking current
Mechanical life(grade M2)
SF6 rated Gas pressure value(at 20 °c)
2 Data for Fuse
1 For Load switch
2 For Combination of electrical
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