User`s manual

Defender 3 Online Emergency Lighting Inverter User’s Manual

#018-7150-03 Rev NR

neutral.

Ensure that the utility power to be connected is rated as on the system label. Make sure the

hots, neutral and grounds are correctly identified and wired to the input terminal block as designated.

Phase rotation should be checked and verified for clockwise rotation. The DSPM UPS System will auto-

matically configure the phase rotation in the forward direction (even if the input power is miss-wired). How-

ever, the output of the DSPM UPS System will not automatically configure the phase rotation in the forward

direction while in the bypass (manual) mode. Therefore, the DSPM UPS System output power should be

checked for proper forward phase rotation while in the bypass mode.

The input power connections to the UPS come from the building supplied services. These connections are

made inside the UPS cabinet in one of two ways, depending on whether the unit is a 50 or a 150KVA (refer

to the proper System Component Layout). In the 50KVA, the input cables are connected to a five (5) pole

terminal block(TB1) which is comprised of three (3) input power, neutral, and ground connections. In the

150KVA, the input cables are connected to the Input Circuit Breaker CB2 and an adjacent grounding termi-

nal block. The Output Power Connections are comprised of three (3) output power connections and a

chassis ground.

6.3. OUTPUT POWER CONNECTIONS

It is highly recommended that a qualified electrician make all input power connections.

he output power

should be connected correctly at the required voltages and the ground cable should be of the same gauge

as the output power cables.

Ensure that the loads to be connected are as listed on the system label,

and the hots, neutral and grounds are correctly identified and are wired to the output terminal block as

designated. Loads not powered by the system cannot use the neutral of the Emergency Lighting In-

verter System.

Do not bond the output neutral to chassis ground! The system has been bonded as required

by the manufacturer and National Electrical Code.

These connections are made inside the UPS cabinet in one of two ways, depending on whether

the unit is a 50 or a 150KVA (refer to the proper System Component Layout). In the 50KVA, the

output cables are connected to a five (5) pole terminal block(TB1) which is comprised of three (3)

output power, neutral, and ground connections. In the 150KVA the output cables are connected

to the Output Circuit Breaker CB4 and an adjacent chassis grounding terminal block (TB2). The

Output Power Connections are comprised of three (3) output power connections and a chassis

ground. The output over current protection from the DSPM UPS System is the responsibility of

the End User.