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
Operating Instructions
34
The VPMP detects and annunciates by alarm message the following conditions:
• Output Overvoltage
• Output Undervoltage
• Output Overcurrent
• Neutral Overcurrent
• Ground Overcurrent
• Output Voltage Distortion
• Frequency Deviation
• Phase Sequence Error
•Phase Loss
• Transformer Overtemperature
All alarm thresholds for monitored parameters are adjustable by way of the VPMP DB-9 setup port to
match site requirements. The factory setpoints for the alarms are as follows:
• Output Overvoltage - output voltage exceeds +6% of nominal
• Output Undervoltage - output voltage falls below - 13% of nominal
• Output Overcurrent - output current exceeds 95% of full load amps
• Neutral Overcurrent - neutral current exceeds 95% of full load amps
• Ground Overcurrent - ground current exceeds:
• 5 amps (15-125kVA)
• 10 amps (150-225kVA)
• 15 amps (300kVA)
• Output Voltage Distortion - output voltage THD exceeds 10%
• Frequency Deviation - output frequency exceeds ±0.5Hz of nominal
Summary Alarm
• Summary Alarm - detects and annunciates any alarm.
Summary Alarm Contacts
• The VPMP has a form C (one NO and one NC) summary alarm contacts for remote alarm status.
The contacts are rated at 24VAC @ 1A. There is one alarm contact per breaker. The contacts
change state upon occurrence of any alarm including warnings and resets when the alarm is
cleared. Summary alarm contacts are located on the adapter board. The adapter board is located
on top of the monitoring enclosure. See Figure 15 for details.
Communication - Liebert IntelliSlot
®
cards provide customer connections to a Building
Management System (BMS) or Remote Monitoring Systems. The following cards are available:
• IS-WEBS Card - provides SNMP/WEB output. An RJ-45 connector is supplied for customer
connection to Ethernet LAN.
• IS-485S Card - provides Modbus 485 output. A terminal strip is provided for 2-wire connection.
• IS-IPBMS Card - provides Modbus IP output. An RJ-45 connector is supplied for customer
connection
Up to three cards can be plugged into the Liebert IntelliSlot ports provided with the VPMP system.
If communication to Liebert SiteScan
®
is required, customer connection can be made to the adapter
board RS-485 terminals on TB1, see Figure 15 for details. The adapter board is located on top of the
monitoring enclosure.