MGE UPS Systems EPS 6000, Installation Manual

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The customer is responsible for supplying downstream distribution circuits and protective
devices as appropriate to the installation and distribution requirements; cable sizing data is
provided on the installation drawings.
Control, communication, and remote annunciation
connections are made at the auxiliary contacts at the circuit
boards located in the upper right portion of the UPS
module. Printed circuit assemblies IBEZ and OBEZ provide
a dry contact interface. Printed circuit assembly RAUZ provides telecommunication capability.
Refer to the UPS installation drawings for contact information. For detailed information on the
communication features, contact your MGE dealer.
Three sets of control cabling must be connected between
the UPS modules and the SSC. The cables and hardware
are supplied by MGE. Requirements vary according to the
system configuration; general information follows.
The display connections are daisy-chained from the RAUZ PCA in the SSC to the RAUZ PCA
in each UPS module.
Control signals for synchronization, transfer, and emergency power off (EPO) commands are
connected between the UPS modules and the SSC. The control signals form a star connection
from the ACPZ PCA in the SSC to the ACPZ PCA in each UPS module.
Current sharing control signals allow load sharing by the UPS modules. These cables are in a
loop-type configuration, from the APOZ PCA in the first UPS module, continuing to the APOZ
PCA in the last UPS module, then back to the APOZ PCA in the first UPS module.
Once all connections have been completed, install the kick
plates at the base of all enclosures (except the SSC), as
appropriate to your installation. Side plates must be
installed first, then back and front plates. For installations
flush-mounted against back or side walls, those kick plates may be left off.
This section presents the procedure to be used for initial
power-up of the EPS 6000 UPS, and the sequence to follow
any time that the UPS is restarted after having been shut completely down (rectifier/battery
charger and inverter both off) and placed on maintenance bypass. Use this section in
conjunction with the EPS 6000 UPS User’s Guide, Shared Systems (MGE part number 86-
130034-00), which details the procedures, controls, and indicators used during start-up.
It is best to contract MGE Customer Support Services for start-up of the EPS 6000 UPS. Do
not allow unqualified personnel to handle or operate the EPS 6000 UPS.
Before starting the EPS 6000 UPS, read thoroughly the
EPS 6000 User’s Guide, Shared Systems (MGE part
number 86-130034-00). Be certain that you fully understand
the operation of the indicators, controls, and operational
sequences.
3.6.1 Checks Before
Start-up
3.6 Start-up
3.5.3 Finishing the
Installation
3.5.2.7
Control Connections,
Inter–Cabinet
3.5.2.6
Customer Control
Connections
3 — 7 Installation, Shared Systems
Installation manual