20
Three Phase Emergency Lighting Inverter User’s Manual
#018-7002-00
WARNING:
Only an Authorized Service Technician should remove this cover.
NOTE:
Operation of the bypass switch will cause the inverter switch to static bypass and turn off the inverter if it
was running.
NOTE:
If the cover over the manual bypass switch is not secured properly the inverter will not start and there will
be an audible beep every one (1) to two (2) minutes.
WARNING:
The manual bypass switch should only be operated by authorized personnel.
5.4. INPUT AND OUTPUT POWER REQUIREMENTS / CONNECTIONS
After unpacking and inspecting the Inverter System for shipping damage and reporting any such damage to
the carrier, it is vital that the input power be connected correctly at the required voltages. It is highly recom-
mended that a qualified electrician make all input and output power connections. It is vital that a true ground
be brought into the unit, not a neutral. The ground conductor should be the same size as the two input / pri-
mary voltage phase conductors. The input power connections to the UPS come from building supplied ser-
vices.
5.5. SYSTEM CURRENT RATINGS
All circuit breakers provided by the end user that are connected to the inputs and outputs, need to be of
the “High Inrush” type. This is to prevent the breakers from tripping during the startup of the unit and its
load. DSPM uses only the “High Inrush” type of breaker in its units. Refer to Figure 9 when determining
the size of your input and output breakers.
5.6. GROUNDING
The Ground Terminals centralize the system grounds for routing back to the building service entry panel
and the output load. The equipment grounding electrode terminals are all tied to a single point within the
cabinet along with all grounds from within the UPS cabinet. This single point functions as a true, single-point
ground. The output neutral point, equipment ground, transformer core, cabinet and system ground are all
tied together at one point.
DO NOT CONNECT THE UPS GROUND WIRE TO ANY FORM OF AN ISOLATED
GROUND SYSTEM. SUCH A CONNECTION WOULD RESULT IN A SAFETY HAZARD,
AND UNDER GROUND FAULT CONDITIONS OR LIGHTNING STRIKES, MAY CAUSE
SEVERE SYSTEM DAMAGE.
6. INSTALLATION
6.1. INSTALLING BATTERIES
Please refer to the following when installing and maintaining batteries:
Figure 6