User`s manual
14
Defender 3 Online Emergency Lighting Inverter User’s Manual
#018-7150-03 Rev NR
11.3.5. UPS Problem
The System controller will issue a UPS PROBLEM message on the LCD screen if any
of the following conditions occur:
•
Input power failure
•
Output overload
During a PROBLEM mode, inverter IGBTs remain on and an alarm signal may be sent to the signal
interface. The system will reset itself as soon as the problems disappears.
1.4. OUTPUT LOADS
The Defender 3 is designed to power any fluorescent or incandescent lighting. There are, how-
ever, certain types of loads that exhibit an excessive inrush current when first turned on or at
other times during operation.
The capacity of the Defender 3 may need to be greater than what would be estimated based on the sys-
tem label requirements of loads previously discussed. Contact the factory directly if you have any ques-
tions about powering unusual loads from your Defender 3.
1.5. OPTIONS (See Unit Options for details)
The following options are available with the Defender 3:
1. ECM120 and ECM277—Environmental Control Module
2. NOF—Normally OFF Circuit 120Vac or 277Vac
3. NOH—Normally OFF “Hold On” Circuit 120Vac or 277Vac
4. OCB—Output Circuit Breaker/(s) 120Vac or 277Vac
5. EPO—Emergency Power Off
6. EPO—Emergency Power Off
7. RSSP—Remote Indicator Panel
8. SNMP—SNMP Card
9. FAX—Fax Modem
10. MB—Modbus Interface
11. FC—Form C Contacts
12. STU3—Onsite Startup
13. EW—Extended Warranty
1.6 OVERVIEW
The UPS provides two power paths between the utility source and the critical load. Figure 1 shows the path
for normal operation, with the load powered from the inverter. Figure 2 shows the path for bypass operation,
with the load supplied through the static bypass line.
The Input circuit breaker (MCCB) for protection of the UPS and cables are field supplied and field installed.
(See WARNING 2 in section 1.0)
Figure 1