GE Pqm 2 Manual

PQMII POWER QUALITY METER  – INSTRUCTION MANUAL2–1
PQMII Power Quality Meter
Chapter 2: Installation
Digital Energy
In stal lation
2.1 Physical Conf iguration
2.1.1 Mounting
Physical dimensions and required cutout dimensions for the PQMII are shown below. Once 
the cutout and mounting holes are made in the panel, use the eight #6 self-tapping screws 
provided to secure the PQMII. Mount the unit on a panel or switchgear door to allow 
operator access to the keypad and indicators.
FIGURE 2–1: Physical...

2–2PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
2.1.2 Product Identif ication
Product attributes vary according to the conf iguration and options selected on the 
customer order. Before applying power to the PQMII, examine the label on the back and 
ensure the correct options are installed.
The following section explains the information included on the label shown below:
FIGURE 2–2: Product Label
•Model No: Shows the PQMII conf iguration. The model number for a basic panel...

CHAPTER 2: INSTALLATION
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL2–3
2.2 Electrical Conf iguration
2.2.1 External Connections
Signal wiring is to Terminals 21 to 51. These terminals accommodate wires sizes up to 12 
gauge. Please note that the maximum torque that can be applied to terminals 21 to 51 is 
0.5 Nm (or 4.4 in ·lb.). CT, VT, and control power connections are made using Terminals 1 to 
20. These #8 screw ring terminals accept wire sizes as large as 8 gauge. Consult the wiring 
diagrams...

2–4PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
Signal Upper Row (21 to 51)47 Comm 1 –
21 Analog shield 48 Comm 1 + 
22 Analog in – 49 Comm 2 COM 
23 Analog in + 50 Comm 2 –
24 Analog out com 51 Comm 2 + Table 2–1: PQMII External Connections
Terminal Description Terminal Description 

CHAPTER 2: INSTALLATION
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL2–5
2.2.2 Wiring Diagrams
This wiring diagram below shows the typical 4-wire wye connection which will cover any 
voltage range. Select the 
S2 SYSTEM SETUP  CURRENT/VOLTAGE CONFIGURATION  VT 
WIRING: 
“4 Wire Wye (3 VTs)” setpoint
.
FIGURE 2–3: Wiring Diagram 4-wire Wye (3 VTs) 

2–6PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
The 2½ element 4-wire wye connection can be used for situations where cost or size 
restrictions limit the number of VTs to two. With this connection, Phase Vbn voltage is 
calculated using the two existing voltages. Select the 
S2 SYSTEM SETUP  CURRENT/VOLTAGE 
CONFIGURATION  VT WIRING: 
“4 WIRE WYE (2 VTs)” setpoint .
This wiring conf iguration will only provide accurate power measurements if the voltages 
are balanced. 

CHAPTER 2: INSTALLATION
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL2–7
FIGURE 2–4: Wiring Diagram 4-wire Wye (2 VTs)
Four-wire systems with voltages 347 V L-N or less can be directly connected to the PQMII 
without VTs. Select the 
S2 SYSTEM SETUP  CURRENT/VOLTAGE CONFIGURATION  VT WIRING: “4 
WIRE WYE DIRECT”
 setpoint . 

2–8PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
The PQMII voltage inputs should be directly connected using HRC fuses rated at 2 A to 
ensure adequate interrupting capacity.
FIGURE 2–5: Wiring Diagram 4-wire Wye Direct (No VTs) 

CHAPTER 2: INSTALLATION
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL2–9
This diagram shows the typical 3-wire delta connection which will cover any voltage range. 
Select the 
S2 SYSTEM SETUP  CURRENT/VOLTAGE CONFIGURATION  VT WIRING: “3 WIRE DELTA (2 
VTs)”
 setpoint .
FIGURE 2–6: Wiring Diagram 3-wire Delta (2 VTs) 

2–10PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
Three-wire systems with voltages 600 V (L-L) or less can be directly connected to the PQMII 
without VTs. Select the 
S2 SYSTEM SETUP  CURRENT/VOLTAGE CONFIGURATION  VT WIRING: “3 
WIRE DIRECT”
 setpoint .
The PQMII voltage inputs should be directly connected using HRC fuses rated at 2 amps to 
ensure adequate interrupting capacity.
FIGURE 2–7: Wiring Diagram 3-wire Direct (No VTs)