TC12 Installation, Commissioning & Maintenance Handbook
Cabinet Side Cover stud left hand side
Cabinet Side Cover stud right hand side
Cabinet Top Cover
abinet rear door
D Panel
minium plate behind the master switch panel).
ains socket panel at the front of the cabinet should be checked
ase of power supply on every PSU Board Installed.
Volt rail on the PSU PCB of every TC12 rack installed in the cabinet The 0 Volt rail
r position of this
CB.
ll earthed points on any other equipment which may have been included in the
after the on site earth continuity test, any rack or panel is removed or replaced,
2.3.1.7 Insulation Resistance Test Procedure
ld take care that they do not come into contact with the high
voltages generated by the Test Instrument.
00 V DC.
ake Sure that the Instation is not connected to the mains, but that all fuses are in
place, all switches are on (i.e. master Switch and Switches for front and rear mains
etc. are in place.
Connect the LIVE
C
Metal Part of front door along hinged side
SIP Panel
IM
Master Switch Panel at the rear of the cabinet
Master Switch panel cover (alu
M
Any installed 19" racks - both left and right mounting flanges
PC Mounting metalwork
C
is accessible at terminal pin TP7 on the PSU PCB, see Figure 7 fo
terminal pin on the P
A
cabinet.
If
then the earth continuity check to that item should be repeated.
SAFETY NOTE
Personnel shou
Set the insulation meter to 10
M
socket panels) and that all PCBs
and NEUTRAL of the Instation mains wire together.
e Instation mains wire EARTH
Connect the meter to measure between th and the
cE
ombined LIV and NEUTRAL.
ing to s
h
Once the Instation has
be repeated unnecessa
ARNING Mains filters may
tests have been co
Allow the meter read
The insulation resistance s
ettle during the test.
ould be not less than 10 MOhm.
Note passed the Insulation resistance test it should not
rily as the mains filters may be damaged.
Wremain charged for some time after the insulation
mpleted.
666/HE/43100/000 Page 45 Issue 9