Tripp Lite 3-Phase 20kVA - Manual (Page 11)

11
Communications
(continued)
REMOTE EMERGENCY POWER OFF (EPO)
This optional feature is only for those applications which require connection to a facility's Emergency Power Off (EPO) circuit. When the UPS System
is connected to this circuit, it enables emergency shutdown of the output. Using a user-supplied cable, connect the UPS System's EPO port to a user-
supplied remote switch. The EPO port is not a phone line surge suppressor; do not connect a phone line to this port. The pin assignments for the EPO
port are shown in the following diagram. Note: if there is a short between pins 2 and 3, 2 and 5, 4 and 5, or 3 and 4, the UPS system will power off. To
reset from a Remote Emergency Power Off Shutdown, make sure there is AC line input power present, the Input Breakers are ON, and the shutdown-
signal has been removed from the EPO circuit. Press the front panel “OFF” Button for 2 to 3 seconds (until a beep is heard); this will place the UPS
System in “Bypass Mode.” Then, press the “ON” Button for one second. The UPS will re-start if AC line power is present.
Pin assignment:
X
1
2
3
4
5
6
X
Adding or Replacing Internal Batteries
DANGER!
POTENTIALLY LETHAL HIGH VOLTAGE! FOR QUALIFIED ELECTRICIANS ONLY!
Follow all safety precautions in the Safety section before adding or replacing internal batteries.
DANGER!
DO NOT REMOVE BATTERY SLEEVE!
Do not remove the plastic sleeve covering the battery strings. The sleeve is designed to prevent accidental
contact with the terminals on the individual batteries. Contact with the terminals will create a potential for
serious injury or death from lethal high voltage. Do not allow tools or other metal objects to come in contact
with the terminals.
CAUTION!
BATTERY PACKS ARE HEAVY!
Use assistants as needed.
WARNING!
CHECK BATTERY PACK VOLTAGE BEFORE COMPLETING INSTALLATION
Do not install battery packs with DC voltages outside the acceptable range. (They may compromise battery
backup capabilities).
NOTE!
Each battery pack consists of two strings of batteries: one string with a BLACK cable and one string with a RED cable.
The batteries are designed for hot-swap replacement, which allows connected equipment to continually receive AC mains power (but not battery backup
support in the event of a blackout) during the battery installation procedure. See “Operation of Manual Bypass Switch” in the Operation section.
Although the batteries can be hot-swapped, qualified service personnel may want to completely turn the UPS off during battery installation. See
“Turning the UPS Off” in the Operation section.
Internal battery packs must be replaced by equivalent batteries available from Tripp Lite. Adding battery packs will increase recharge time. Individual
models may vary slightly from diagrams.