User`s manual

22
Defender 3 Online Emergency Lighting Inverter User’s Manual
#018-7150-03 Rev NR
The AC Input, AC Output Terminals Blocks are provided for the connection of incoming power and the con-
nection of the load (equipment) intended to be powered by the UPS. Refer to appropriate Component layout
for these connections and their locations in the UPS Cabinet.
5.4. MANUAL BYPASS SWITCH DESCRIPTION
In most units, this switch is located on the inside of the left door of the system (See system component
diagram for exact location). The bypass switch is used in case of a failure of the lighting inverter. If the
lighting inverter fails, place the bypass switch in the “MAN” position. In this position the inverter section
is bypassed allowing the load to be powered by the utility until the inverter can be repaired. In case of
system failure, contact factory for service. The Manual Bypass Switch is used to bypass the electronic
(inverter) when the system have failed. The Manual Bypass Switch should never be operated when the
UPS is supporting the load. The rotation of this switch will turn off the inverter. The Load will be fed from the
Utility until the switch is place back into the UPS position, and the inverter is returned back to operation.
Lethal voltages exist within the cabinet, even when the unit is on bypass. Only qualified
service personnel with adequate training must service this equipment.
Figure 7a When Inverter Drive Unit is on Right Door
Figure 7b When Inverter Drive Unit is on Center Shelf (No input Terminal Block)
5.3. DESCRIPTION OF AC INPUT AND AC OUTPUT TERMINALS BLOCKS