ABB FSK II +, Руководство по эксплуатации и техническому обслуживанию, Страница: 15 / 32

A B B I N T H E R A I LWAY S – M ED I U M VO LTAG E P R O D U C T S 15 A B B I N T H E R A I LWAY S – M ED I U M VO LTAG E P R O D U C T S 15
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6.1.2. Circuit breaker FSK1025
Designation
Value
Type: 2500
Frequency 50 Hz -60Hz
Operating voltage 25 kV
Number of phase 1 or 2
Rated voltage
acc. To EN 50124-1 27.5 kV
acc. To EN 60694 27.5 kV
Rated power frequency withstand voltage (50Hz / 1 min)
Phase to earth 105 kV
Across open contacts 105 kV
Electromagnet, electronics and wiring to earth 2 kV
Rated lightning impulse withstand voltage (1.2/50
µ
s)
Phase to earth 250 kV
Across open contacts 250 kV
Rated currents
Normal current ≤2500 A
Short-circuit breaking current 25 kA
Rated peak withstand current 63 kA
Short circuit making current 63 kA
Short time withstand current (3 s) 25 kA
Rated operating sequence CB O – 0.3s – CO – 60s – CO
Closing time ≤ 65 ms
Opening time ≤ 45 ms
Strength of the circuit breaker pole Operating cycles
- mechanical
class M2=
10000
- with maintenance 30000
Strength of the vacuum interrupter
Mechanical operating cycles 20000
Electric power at rated current 20000
Electric power at rated short-circuit break current 50