Page 6 of 20
11.08.2011
IG-178-GB
version 01
Page 6 of 24
GENERAL INSTRUCTIONS FOR
CMS-17
SWITCHING AND BREAKING SUBSTATION
1.1.1. Technical Characteristics: CGMCOSMOS system
MV Switchgear Unit
CGMCOSMOS
Insulation
SF
6
Rated voltage
kV
24
kV
Power freq.: 50/60
Insulation level
kV
Lightning impulse: 125/145
Busbar (IEC 62271-200):
Rated current
A
400/630
Rated short-time withstand current
kA
16 eff. (1 s)
Peak value
kA
40
Switch-disconnector (IEC 60265-1):
Type
Rotation (category E3)
Rated current
A
400/630
Rated short-time withstand current
kA
16 eff. (1 s)
Peak value
kA
40
Short-circuit making capacity
kA
16 / 40
Nº of short-circuit closing operations CO/CO
5
Earthing Switch (IEC 62271-102)
Rated short-time withstand current
kA
16 eff. (1 s)
Peak value
kA
40
Short-circuit making capacity
kA
16 / 40 (category E2)
Nº of short-circuit closing operations CO/CO
5
Fuse Protection Function
Rated current
A
200
Short-time current (main circuit)
kA
16 (1 s)
Main switch making capacity
kA
40
Opening capacity Co/Co
kA
16
Nº of short-circuit closing operations CO/CO
5