Siemens SIPROTEC 4 7XT7100-0 A00/EE Series - Block Diagram

38 SIPROTEC 4/5, Injection Unit 7XT71, Product Information
C53000-B1174-C128-7, Edition 09.2016
13 Block Diagram
Fig. 13-1 Block Diagram of Injection Unit 7XT71
7XT71
1
2
7
11
9
13
8
10
12
14
~
=
17
18
U
Steuer
V
Control
U
Steuer
V
Control
U
Mess
V
Meas
U
Mess
V
Meas
+ U
H
(+U
aux
)U
L1
(U
a
)
DC AC
-U
H
(-U
aux
)U
L2
(U
b
)
NOTE
The voltage between terminal 1 and terminal 2 (and to ground) must not exceed AC
300 V.
Non-observance can result in material damage.
✧ Apply suitable protection measures.