APC mgetm galaxytm 6000 User Manual

6739381EN/

The UPS emergency shutdown
function is generally wired to a
"mushroom-head" type emergency off
button.

Important:
In the case of a complex installation
with a number of units, there should
only be one emergency shutdown
pushbutton and this pushbutton must
interrupt all the active conductors of all
the units.
For the same reason, it is essential for
the pushbutton to open the upstream
mains 1, mains 2, and external
maintenance bypass line protective

circuit breakers.
Each type of unit (UPS and Static
Switch Cubicle) must have an
independent, volt-free contact
connected to the emergency shutdown
pushbutton. This pushbutton must
therefore have as many contacts as
there are units in the installation, as
well as the contact or contacts required
to open the upstream mains 1 and 2
protective circuit breakers. The
emergency shutdown pushbutton turns
off the rectifier-chargers and inverters
and opens the battery circuit breakers.
The emergency shutdown signal will be
cleared when the emergency shutdown

pushbutton contact has been reset.
The emergency shutdown pushbutton
should not be connected to the Static
Switch Cubicle since the pushbutton
opens the circuit breaker protecting the
upstream circuit (mains 2) and the
Static Switch Cubicle is therefore no
longer powered (inverters off and mains
2 down).

Connect the cable from connector XR3
(pins 7 to 12) of the rectifier-inverter
cubicle remote relay board to connector
XR1 of the battery cubicle containing
battery circuit breaker QF1.

(modular UPSs or parallel UPSs
with SSC)

On modular UPSs, interconnections are
made on the APOZ (figure 17) and MISI
(figures 19 to 21) boards in the UPS
cubicles (see the layout of the boards in
the figures in the previous section).
For parallel UPSs with a centralised
SSC, interconnections are made on the
APOZ boards in the UPS cubicles
(figure 17) and the ACPZ boards (see
the layout of the boards in the figures in
the previous section) in the SSC (figure
18).

◗

these connections are made using

the ribbon cables supplied;

◗

the purpose of the connection is to

make a loop: connector XM137 of the
APOZ board of one UPS being
connected to connector XM136 of the
APOZ board of the next UPS and so on
until the first board is returned to.

Important:
Outside the cubicles, group the APOZ
inter-board and ACPZ or MISI inter-
board connections with the inter-cubicle
auxiliary connections, and separate
this assembly from the power
cables.

ribbon cables supplied

 (cont.)