MGE UPS Systems EPS 7000, Installation Manual

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Installation page 3 — 5
Installation Manual
3.3.3 Battery Connections
The connections to be made are the positive (+), negative (–), and enclosure ground connections between the
battery cabinet and the UPS module. Additionally, control connections between the battery temperature sensor and
the UPS module must be installed. Refer to the installation drawings supplied with the UPS, the battery cabinet, and
the battery temperature sensor.
3.3.4 Power Connections, Inter-Cabinet
The connections to be made vary depending on your system configuration. Typically, EPS 7000 systems
are designed to make interconnection easy to complete and verify; however, always follow the installa-
tion drawings provided with the system.
Most inter-cabinet cables and hardware are provided by MGE; the customer is responsible for installing these
cables. Cable ends are labeled to match the termination points. Some cabling must be supplied and installed by
the customer. The installation drawings supplied with the system give complete details.
3.4 AC Output Connections for Single Module and Shared Systems
3.4.1 Single Module
The connections to be made are the three phases, ground and optional neutral cables. In units with MBP, the output
connections are made at the MBP cabinet.
The customer is responsible for supplying upstream protective devices and downstream distribution circuits and
protective devices as appropriate to the installation and distribution requirements; cable sizing data is provided on
the installation drawings.
3.4.2 Shared Systems
The connections to be made are the three phases, ground, and optional neutral cables between the SSC output
and the load to be supplied. Cables may be routed through the top or bottom of the SSC and optional MBP enclo-
sures.
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.
3.4.3 Customer Control Connections
Control, communication, and remote annunciation connections are made at the auxiliary contacts at the circuit
boards located in the top 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 installa-
tion drawings for contact information. For detailed information on the communication features, contact your MGE
dealer.
3.5 Control Connection, Inter-Cabinet
3.5.1 Shared Systems Connections
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.