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Siemens TL.. Manual de instrucciones Pagina 34

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32
External Accessories
Siemens ACCESS Communications System
The
MTCSB
cable is used to connect an
MTA
or
MTZ
to an
EPSB
expansion plug via the SB breaker secondary terminal
block or sliding disconnect.
A. SB Breaker Zone Selective Interlocking (only)
1. All SB Breaker Trip Units
Components R
equired:
• Siemens type MTZ – one per 8 trip units
• Siemens type EPSB expansion plug – one per trip unit,
factory wired
• Siemens type MTCSB cable – one per trip unit
Inst
allation:
1. When the factory-installed ZSI option is present, the
EPSB
ex-
pansion plug is already wired to the breaker and secondary
control terminals. Connect an MTCSB cable’s spade lugs
from the appropriate SB breaker’s secondary terminals (LB9,
10, 11, & 12) to one of eight communication inputs on the MTZ.
2. If multiple MT’s are used, the “Com” terminal from the first
MT’s “SEABus Out” port must
be connected to the “Com”
terminal of the next MT’s “SEABus In” port on each MT being
used.
3. Based on the site’s coordination study, configure the expan-
sion plug’s DIP switches for Short Time and/or Ground Fault
ZSI per the EP Information and Instruction Sheet.
4. Configure the MTZ to identify the zones for each breaker, per
the site’s coordination study and information and instruction
sheet. Refer to figure 1 for system connections diagram.
MTC Cable
LB Breaker Terminals
Factory
Wired
Factory Wired
MTCSB Cable
MTC Cable
EPC Cable
MTCSB Cable
Required for
ZSI only
with EC
Trip Unit
RS-485 Common
Required for
ZSI only
Factory
Wired
Factory Wired
SB Breaker
With
SB-EC Trip Unit
LB Breaker Terminals
EPSB
(LB 9)
(LB 10)
(LB 11)
(LB 12)
(LB 5)
(LB 6)
(LB 7)
(A(+) B(-)
IN
(A(+) B(-)
OUT
Com
MT (#1)
ZI
IN
12345678
EP
Sensitrip
MCCB
RS-485 (+)
RS-485 (-)
ACCESS Communications
to WinPM or DTU-3005 Protocol Converter
(A(+) B(-)
IN
Com
ZI
OUT
12345678
MT (#2)
EPSB
SB Breaker
With
Type ‘TL’
Trip Unit
(LB 9)
(LB 10)
(LB 11)
(LB12)
Figure 1 System Connection Diagram
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