1.4. Electrical specifications
Rated voltage [kV]
12
24*
Frequency [Hz]
50
60
50
60
Rated current [A]
Busbars and cubicle interconnection
400/630
Feeder
400/630
Transformer output
200
Rated short-time withstand current [kA]
With t
k
= (x) s
16/20** (1/3 s)/25 (1 s)
16/20** (1/3 s)/25 (1 s)
Peak value
40/50**/62.5
41.6/52**/65
40/50**/62.5
41.6/52**/65
Rated insulation level [kV]
Rated power frequency withstand voltage (1 min)
28/32
50/60
Rated lightning impulse withstand voltage
75/85
125/145
Internal arc in tank
Front accessibility
16/20** kA (0.5 s)
16/20** kA (0.5 s)
Front and side accessibility
16/20**/25 kA (1 s)
16/20**/25 kA (1 s)
Front, side and rear accessibility***
20** kA (1 s)
20** kA (1 s)
Internal arc classifi cation according to IEC 62271-200
IAC AF/AFL
16 kA (0.5 s) - 16/20**/25 kA (1 s)
16 kA (0.5 s) - 16/20**/25 kA (1 s)
IAC AFLR
20** kA (1 s)
20** kA (1 s)
IP rating: gas tank
IP X8
IP X8
IP rating: external enclosure
IP 2XD
IP 2XD
Standard unit colour (RAL)
grey 7035 / blue 5005
grey 7035 / blue 5005
Category of loss of service continuity [LSC]
LSC2
LSC2
Partition class
PM
PM
* For metering cubicle with earthing switch up to 17.5 kV.
** Tests conducted at current 21 kA/52.5 kA (50 Hz) – 54.6 kA (60 Hz).
*** With gas exhaust upwards via the relief duct.
Table 1.5.
Electrical specifi cations
The values set out in this table are general for the
cgmcosmos
system and are only valid when confi rmed
by
Ormazabal
. Some cubicle models can withstand
partial values. For more detailed information, check
the table for each cubicle model in
Ormazabal
's
CA-100
catalogue.
IG-078-EN version 12; 23/04/2020
11
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
General description
Содержание velatia cgmcosmos
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