Insulation Rating; Electrical Data - Siemens 3AP2-FI Operation & Maintenance Manual

3 Description
3.1.3

Insulation Rating

Rated voltage
Rated short-duration power-frequency
withstand voltage
to earth
across the open circuit-breaker
between phases
Rated lightning impulse withstand
voltage
to earth
across the open circuit-breaker
between phases
Impulse against power frequency
voltage
Rated switching impulse withstand
voltage
to earth
across the open circuit-breaker
between phases
Impulse against power frequency
voltage
Flashover distance in air
to earth
across the open circuit-breaker
between phases
Minimum creepage distance over the
insulators' surfaces
to earth
across the open circuit-breaker
Table 1 Insulation rating
3.1.4

Electrical Data

Rated voltage
Rated frequency
Rated normal current
Rated short-circuit breaking current
Rated line-charging breaking current
(1.4 p.u.)
Rated cable-charging breaking
current (1.4 p.u.)
Transient recovery voltage under
terminal fault conditions
Rated short-circuit making current
Rated short-circuit duration
Rated operating sequence
Table 2 Electrical data
420 kV
520 kV
610 kV
520 kV
1425 kV
1425 kV
1425 kV
1425 kV +240 kV
1050 kV
1050 kV
1575 kV
900 kV + 345 kV
3180 mm
3200 mm
see dimension drawing
10050 mm
10500 mm
420 kV
50 Hz
3150 A
50 kA
600 A
400 A
ace. to IEC
135kA
3s
O-0,3s-CO-3min-CO
9