TC12 Installation, Commissioning & Maintenance Handbook
2.2
afety Notes on TC12 Instation
anels of the TC12 Instation Cabinet. Users/operators must not attempt to
a
O
mains powered equipment, is allowed to setup/change any switch positions in the
Instation equipment and/or use any of the free mains sockets within the equipment
he TC12 Instation Test Set at the Instation.
If be
cancelled as required from the UTC TCC terminal. If the reason for the alarm is a
UTC TCC failure, an authorised/trained person (trained in the safety aspects of
working with mains powered equipment), should be asked to cancel the audio
dio off switch on the PSU PCB.
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Instation is attached to the mains. If after the on site earth continuity test, any rack
or panel is removed or replaced, then the earth continuity check to that item
should be repeated.
2.2.1
Thows the
structure of part numbers within the TC12 system. The top-level part number for
the TC12 Instation is 667/1/22
The racking space is 32U high, and contains five 6U positions and one 2U
po major
com
Master Switch Panel Assembly fitted to rear of cabinet, height 2U
M2U (667/1/22605/000)
System Fault Indication Panel (F 00)
A
draw
PCBs and possibly Transformer PCBs, all of which are described in later sections.
The g
667/GA/22626/001) as well as, or instead of TC12 19" Instation Racks.
Optionally a TC12 Outstation can also be fitted to the Instation cabinet, for test
purposes. The Outstation is 5U high and therefore, if fitted, a 1U blanking panel is
also included (667/1/22613/000)
INSTALLATION
S
Only authorised/trained personnel are allowed to have access behind the
doors/p
ccess anything behind these doors/panels.
nly an authorised/trained person (trained in the safety aspects of working on
and/or connect/use t
the Audible alarm on the system fault indication panel (SIP) sounds it should
alarm, using the au
n site safety tests, as described in section 2.3.1, must be carried out before the
Cabinet
he TC12 Family Tree part number is 667/DZ/22600/000. This s
600/000.
sition, refer to drawing 667/GA/22600/000 which shows the position of the
ponents fitted to the cabinet. These include:
(667/1/22603/000)
ains Socket Assembly, fitted to front of cabinet, height
IP), height 6U (667/1/22667/000)
TC12 PC Mounting Chassis (667/2/22621/0
IMD Distribution Mounting Panel (667/2/22636/000)
ddi ntio ally 1 or more TC12 19" Instation Racks (height 6U, refer to separate
ing 667/GA/22626/000) will be fitted - these contain PSU PCBs, Modem
Instation may contain 19" Digital Output Racks (height 6U, refer to drawin
666/HE/43100/000 Page 12 Issue 9