Merlin Gerin circuit breaker LFI Cradle for Medium Voltage Distribution

Merlin Gerin circuit breaker LFI Cradle for Medium Voltage Distribution
Medium Voltage Distribution
Merlin Gerin circuit breaker
Cradle for LFI
Ready to install withdrawable
circuit breaker in all type of
cubicle for a complete safe to
operate.
withdrawable LFl clrcult breaker
.SF6 breaking technique
electrical RI operation mechanism lncludlng:
electrical "closing" and 'opening" system;
electrical spring charging device;
operations counter.
slide-out truck fitted wlth:
Racking function;
a mechanical system securing the unit being
withdrawn only possible in "open" state;
a mechanical system securing the unit
operations (closinglopening) only possible in
"service" or "test" position.
=fixed portion fltted wlth:
bushings: electrical insulating and built-in
contacts;
n metal safety shutters: automatically blank off
the fixed contacts and manually be pad-lockable in
"test" position;
a guide rail at the bottom;
Earthing is automatic when the truck is fully
racked in.
--
pp
A com~letesafe to o~erate
bushings with metallic shutters
operating and test position
interlocking and padlocking
conformity standard:
IEC 60694:
common specifications for high voltage switchgear
IEC 62271-100:
mhigh voltage alternating current circuit breakers
Merlin Gerin
Square D
Telemecaniaue
Rated voltage
Insulation level
kV
kV rrns.Imm
kV impulse
Rated current
630 A
1250A
Breaking capacity
kA rms
kA peak
Making capacity
Permissible short time kA rrns.3~
withstand current
0-0,3s-CO-l5s-CO
Rated switching
sequence
0-3mn-CO-3mn-CO
Operating time
ms opening
breaking
closing
RI operating mechanism
power
supply
voltage
consumption
ACO
DCW)
ACWA)
DCP"4
electrical
s ring
cRargIng
50 Hz
60Hz
12
28
75
rn
¤
¤
¤
25
63
25
31.5 25
79
63
31.5 25
.. .
48
70
65
48
70
65
closing
release
48 - 110 - 220
120-240
2 4 - 4 8 - 110- 125-220
380
160
380
50
31.5
79
31.5
¤
¤
¤
¤
48
70
65
48
70
65
opening
release
1
1
160
50
w dimensions
H: height ......................................................965mm
W: width ......................................................576mm
D: depth .......................................................
1140mm
Distance between phases .............................145mm
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