User manual
Table Of Contents
- Important Safety Instructions
- 1.0 Installation Instructions
- 1.1 Unpacking and Installation
- 1.2 Additional Distribution Mounting and Wiring
- 1.3 Power and Control Wiring
- 1.3.1 Input Power Connections
- Figure 5 Electrical connection location for 23" (584mm) cabinet
- Figure 6 Electrical connection location for 47" (1194mm) cabinet
- Figure 7 Electrical connection location for 47" cabinet with Square D I-Line panelboard
- Table 4 Suggested minimum input wire size data
- Table 5 Main input circuit breaker interrupting rating
- 1.3.2 Junction Box Installation
- Table 6 Main input junction box electrical connections (4 wire)
- Table 7 Main input junction box without transformer electrical connections (5 wire)
- Table 8 Low-voltage (control) junction box dimensions, typical
- Table 9 Main input (power) junction box dimensions, typical
- Figure 8 Low-voltage control junction box connections, typical
- Figure 9 Main input junction box connections, typical
- 1.3.3 System Grounding
- 1.3.4 Grounding Electrode Conductor for Liebert® FPCs With Transformer
- 1.3.5 Output Power Connections
- 1.3.6 Control Wiring Connections
- 1.3.7 Adapter Board
- 1.3.1 Input Power Connections
- 2.0 Equipment Inspection and Startup
- 3.0 Inspection and Startup Checklist
- 4.0 Operating Instructions
- 5.0 Maintenance
Inspection and Startup Checklist
28
___ 4. Check and record the input voltages at the junction box:
Volts, Phase A to Phase B = ______________
Volts, Phase B to Phase C = ______________
Volts, Phase C to Phase A = ______________
___ 5. Turn Off and lock out the building power to the input junction box.
___ 6. Replace the junction box cover.
___ 7. Verify proper input power connections to unit, including equipment grounding conductor and
local grounding electrode conductor.
___ 8. Turn On the building input power to the unit.
___ 9. Check the phase rotation at the main input breaker. Phase rotation should be A, B, C, left-to-
right.
___ 10. Check and record the input voltage at the main input breaker. Measured voltages should
correspond to the unit’s nameplate input voltage.
Volts, Phase A to Phase B = ______________
Volts, Phase B to Phase C = ______________
Volts, Phase C to Phase A = ______________
___ 11. Turn On the main input breaker; wait one minute. (If breaker trips Off, check for wiring
errors including control connections. Contact Liebert
™
Services or the location factory
representative for assistance.)
___ 12. Check the phase rotation at the line side terminals (top) of the panelboard main breaker(s)
and any subfeed output circuit breaker(s). The rotation should be A, B, C, left-to-right.
___ 13. Check and record the voltages at the line-side terminals of the output circuit breaker.
Measured voltages should correspond to the unit’s nameplate output voltage (within +4%,-0%).
Volts, Phase A to Phase B = _______________
Volts, Phase B to Phase C = _______________
Volts, Phase C to Phase A = _______________
Volts, Phase A to Neutral = _______________
Volts, Phase B to Neutral = _______________
Volts, Phase C to Neutral = _______________
If output voltage is incorrect, check for wiring errors, incorrect input voltage, or improper
transformer tap. Contact Liebert Services at 1-800-LIEBERT in the United States or your local
Emerson representative for assistance.
___ 14. Press the local Emergency Power Off switch, if supplied, and verify system shutdown. Turn
the unit back on.
___ 15. Repeat Step 14 for each remote Emergency Power Off switch with which the system is
equipped.
NOTICE
Risk of improper shutodwn. Can cause equipment damage.
The Remote Emergency Power Off switch may shut down more equipment or systems than
just the Liebert FPC
NOTE
The Liebert
®
FPC
™
transformer has input voltage taps for each input phase. The taps are
arranged in 2-1/2% or 5% intervals ranging from -10% to nominal to +5%. This permits the
transformer to provide the proper output voltage for a range of input voltages. Should it be
necessary, the tap arrangement may be changed to match the input voltage:
• Open main input circuit breaker.
• Select tap arrangement to match input voltage. (Refer to transformer nameplate for tap
information.)
• Secure each line to its proper tap.
• Repeat Steps 11 to 13.