6/158
.3.
The structure the poles differs according whether the circuit-breaker selective current-limiting.Description
1.1 ircu it-b rating plate
SACE lu=1600A Ue=690V lcw=42kAx1s
Ue (V) IEC 60947-2 in
leu (kA)
Italy E
les (kA)
r e
cat. Fig.1 eneral cte ristics
The SACE Emax series circuit-breakers and disconnectors consists steel sheet structure which houses the operating mechanism, the poles
and the auxiliary parts.B 50-60HZ \
V Vi
1 PR121, PR122 PR123
electronic microprocessor-
based release
2 Trade mark
3 Operating and control parts of
the operating mechanism and
release tripped signals
4 Rating plate
Fig. 3
Model L2234 Apparatus Scale
L 2778
Doc No' 1SDH000460R0002
Page No. 2b
1.
The fixed version circuit-breaker has its own terminals for connection the power circuit; the withdrawable version the circuit-breaker comprises
the moving part the apparatus, which completed with fixed part fitted with the terminals for connection the power circuit the installation.4 oving stru ctio cte ristics
Selective circuit-breaker Current-limiting circuit-breaker
1 Supporting structure made steel sheet Terminal box for the fixed version-Sliding contacts for the withdrawable version
2 Current sensor for protection release Protection release
3 Terminalsupporting insulating box Circuit-breaker closing and opening mechanism
4 Horizontal rear terminals Closingsprings
5a Main fixed contact plates Spring loading geared motor (on request)
5b Fixed arcing contact plates Leverfor manually loading the closing springs
6a Main moving contact plates Racking-outdevice (only for withdrawable circuit-breakers)
6b Moving arcing contact plates Service releases (shunt closing release, shunt opening release, undervoltage
7 Arcing chamber release)(on req uest)
Fig.2 isco cto ratin plate
SACE E2B/M lu=1600A Ue=690V lcw=42kAx1s
Ue (V) 400/415 690 250 500
le (kA)
Cat.
The moving part and the fixed part coupled means special contacts installed the fixed part.
1.3. Each pole, insulated from the others, contains the circuit-breaking parts and the current transformer the corresponding
phase. 2a
1.2 External fro vie circu it-b 1. 23A 23A
~ 50-60HZ 2P
Italy E
Fig
