Medium Voltage Distribution
Merlin Gerin data sheet
2007
LFP circuit breaker
LFP circuit breaker is used
to protect and control MV public
or industrial distribution network.
PE55821
SF6 breaking frontal version
Frontal LFP is an indoor
switchgear
b Rated voltage up to 17.5 kV
b Rated short-circuit breaking current
up to 50 kA
b Rated normal current 5000 A.
LFP is available in 2 versions:
b Basic fixed
b Fixed with a support frame.
Conformity with standards
b IEC 60694: common specifications for high voltage switchgear
and controlgear standards
b IEC 62271-100: high voltage alternating current circuit breaker
b IEC 62271-200 (previously IEC 60298): AC metal-enclosed switchgear
and controlgear for rated voltages above 1 kV and up to and including 52 kV.
Certification
b By independent laboratories in accordance with ISO/IEC 17025
and EN 45011 standard
b Our factories implement a quality system certified to ISO 9001
and ISO 9002 standards by IQNET.
Installation
b Fixed
b Designed for retrofit.
Operation
b The operating mechanism is identical to that of the Merlin Gerin SF6 MV circuit
breaker SF ranges.
A full range of accessories and
auxiliaries factory-mounted or
delivered separately
b
b
b
b
b
b
b
b
Electrical characteristics according to IEC 62271-100
Rated voltage
Ur
kV (50/60 Hz)
12
15
17.5
- power frequency
withstand
Ud
kV (50 Hz 1 min)
28 (*)
38 (*)
38 (*)
- lightning impulse
withstand
Up
kV peak
75
95 (*)
95 (*)
Insulation level
Electric motor (M)
Undervoltage release (YM)
Shunt opening releases (YO1, YO2)
Low energy release (MITOP)
Shunt closing release (YF)
Auxiliary contacts
Operations counter
Locking by padlocks and/or leylocks/sealing.
Rated current
Ir
A
b
b
b
b
Short circuit current
Isc
kA
40
50
40
25
31.5
Asymmetry (%)
50
30
30
100
30
40
50
40
25
31.5
100
125
100
63
79
b
b
b
b
5000
Short time withstand
current
Ik/tk
kA/3 s
Short-circuit making
current
Ip
Peak kA
50 Hz
Rated switching sequence
O-3 min-CO-3 min-CO b
Operating times
Opening
Service temperature
T
ms
b
48
Breaking
ms
70
Closing
ms
65
°C
– 25 to + 40
(*) For higher values: consult us
b Available.
Device
Basic fixed
38
W
1040
H
597
D
611
Weight (kg)
270
50
38.5
50
270
25
140
DE57380EN
Dimensions (mm)
80
330 60
H
417
Fixing
65
141
533
D
W
34
Fixed with a support frame
270
1086
H
945
D
611
Weight (kg)
310
ART.829970 © Schneider Electric Industries SAS - All rights reserved
W
DE57381EN
Dimensions (mm)
330
H
555
W
Schneider Electric Industries SAS
89, boulevard Franklin Roosevelt
F-92506 Rueil-Malmaison Cedex
Tel: +33 (0)1 41 29 85 00
www.schneider-electric.com
www.merlin-gerin.com
521
D
As standards, specifications and designs change from time to time, please ask for confirmation
of the information given in this publication.
This document has been printed
on ecological paper
Publishing: Schneider Electric Industries SAS
Design: Schneider Electric Industries SAS
Printing: Imprimerie du Pont de Claix/JPF - Made in France
AMTED307007EN
05-2007