3.
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 terminals for connecting the power circuit the installation.2 r-p ircu it-b rating plate
S E2B/E 800 V
U 1000 2
M rlp i
c 25
\ \
o IauC y
b E
c 5
u ŕ
c t. Fig.2 External fro vie the circu it-b 1. 3
8 Term inal box for the fixed version-S liding contacts the ithdraw able version
9 Protection release
10 Circuit-breaker closing and opening echanism
11 Closing springs
12 Spring loading geared otor (on request)
13 Leverfor anually loading the closing springs
14 acking-out device (only for ithdraw able circuit-breakers)
15 Service releases (shunt clo sing release, shun ning release, undervoltage
release) (on request)
Model 3447
A pparatus Emax DC
S cale
D oc-N 1SDH000635R0002
Page No.B -"xh ^
i— —j
+ -
V V
Fig.
The moving part and fixed part are coupled means special clamps installed the fixed part.1 hre circu it-b rating plate
SACE E2B/E800
Ue (V)
(kA)
Iow(o,5s) (kA)
IU-800A Ue-750V
750
j, MSB® "
' 'I'I'l €
1 PR122/DC PR123/DC
electronic icroprocessor-
based release
2 Trade ark
3 perating and control parts of
the ope tin echanism and
release tripped signals
4 Rating plate
Fig.Description
1. 2b
1.1 eneral cte ristics
The SACE Emax series circuit-breakers consists steel sheet structure which houses the operating mechanism, the poles and the auxiliary
parts.3.4 oving stru ctio cte ristics
S lective circuit-breaker
1 rtin structure ade steel sheet
2 urrent sensor for protection release
3 Term inal supp ortin insulating box
4 orizontal rear term inals
5a Main fixed plates
5b Fixed arcing plates
6a Main oving plates
6b oving arcing ntact plates
7 rcing cham ber
Fig.
Each pole insulated from the others and contains the circuit-breaking parts, the shunt and the override protection.
5/108
. 2a
1.
1
