Page 57 - YINGMING POWER(HIGH VOLTAGE)

FZ(R)N25-12
INDOOR HIGH VOLTAGE VACUUM
LOAD BREAK SWITCH YINGMING POWER
The main technical parameters

Project Unit FZN25-12 FZRN25-12
Rated voltage kV 12
Rated frequency Hz 50
Rated current A
1min power frequency withstand voltage kV Arc chamber break 30
Rated insulation Effective value kV For M-phase 42; isolation fracture 48
level
Lightning impulse withstand voltage (peak value) Ground-to-earth X-phase 75; isolation fracture 85
Rated dynamic stable current (peak value) kA 50
4S thermal stable current kA 20
Rated active load breaking current A 630
Rated closed-loop breaking current A 630
Rated cable charging breaking current A 10
Rated breaking no-load transformer capacity kV 1250
Rated transfer current A 2000
Fuse model SDLAJ-20 SFLAJ-12
Impactor output energy J 2-5
Rated short-circuit making current kA 80 (expected peak)
Grounding switch rated dynamic current kA 50
Ground switch 2s thermal current kA 20
Auxiliary circuit rated voltage V ~220~110
Mechanical life Times 10000
Opening time triggered by fuse ms 30-40
Trip time triggered by the trip unit ms 40-50

Shape and installation size (mm)

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50