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Typical notation for
Synchronous generators
Synchronous machine
Rotor type
cylindrical rotor
salient pole rotor
cylindrical rotor, steem and gas turbine
Salient pole rotor, water turbine
Salient pole rotor, piston machine
Diameter of stator core (coded)
Standard frame size just For 1DB, 1DC
400 mm frame size
450 mm frame size
500 mm frame size
560 mm frame size
630 mm frame size
710 mm frame size
800 mm frame size
Length of stator core (coded)
Degree of protection
IP 00
IP 11
IP 20
IP 21
IP 23
IP W24
IP 44/54/55/56 Tube
IP 44/54/55/56 CACA
IP 44/54/55/56 CACW
s
1 D B 06 24 - 4 A V 03 - Z
D
B
C
U
H
K
03
04
05
06
08
10
12
0
1
2
3
4
5
6
7
8
Revision A 27.05.10
Number of pole pairs
Stator voltage and frequency
B
50/ <6.3
C
50/ 6.3
D
50/ 6.3 - 11.0
E
50/ 11.0
F
50/ >11.0
H
60/ <4.16
J
60/ 4.16
K
60/ 4.16 - 6.6
L
60/ 6.6
M
60/ 6.6 - 13.8
N
60/ 13.8
P
60/ >13.8
V
50/≤0.5
W
50/≤1.0
X
60/≤0.5
Y
60/≤1.0
Mounting and Ex-protection
A
IM B... no Ex-protection
B
IM B... E(Ex) p
C
IM B... E(Ex) n, E(Ex) e
D
IM 7... no Ex protection
E
IM 7... Ex protection
F
IM B... Eex n, e
Siemens Electric Machines s.r.o.
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