Page 6 - SGC SwitchGear Company
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3. DW-2 MODULES RANGE
3.1. TECHNICAL SPECIFICATIONS
Rated Voltage 12 kV
Rated power frequency withstand voltage (Ud) 28 kV
Rated lightning impulse withstand voltage (peak) 75 kV
Rated short-circuit breaking current (Isc) to 31.5 kA
Rated peak withstand current (Ip) to 82 kA
Rated short-time withstand current (Ik) to 31.5 kA
Rated duration of short circuit current (tk) 4 s
Internal arc withstand current, 1s 31.5 kA
Rated frequency 50/60 Hz
Rated busbar current 2500 A
Rated feeder current 630 A, 1250 A, 1600 A, 2000 A
Standards IEC 62271-200
Degree of protection (RC 630 A, 1250 A) IP4X
Degree of protection (RC 1600 A, 2000 A) IP3X
Temperature range -25…+40 °C
Maximum relative humidity 95%
Maximum altitude 1000m a.s.l.*
* For installations at altitudes higher than 1000 m, the insulation withstand level of external insulation at the service
location has to be determined by multiplying the rated insulation levels by a factor K in accordance to IEC 62271-1.
a
6 THE SPECIALIST IN MEDIUM VOLTAGE SWITCHGEAR
