GE Pqm 2 Manual

CHAPTER 1: OVERVIEW
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL1–3
FIGURE 1–1: Single Line Diagram
Four (4)
output
relays
Four (4)
transducer
outputs
4 3 2 1
COM 2
RS232
PORT COM 1 Four switch
inputs for
control–
4to20mA Alarm
control Instrumentation
Electrical
MaintenanceMain
SCADAThree-phase
3/4-wire bus
CTs
VTs 0 to 600 V direct
> 600V CT/VTs
Control
power
(AC/DC)
PLC
or
RTU
PQMII
PC running
EnerVista PQMII Setup746701A1.CDR 

1–4PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 1: OVERVIEW
FIGURE 1–2: Feature Highlights 

CHAPTER 1: OVERVIEW
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL1–5
1.2 Standard Features
1.2.1 Metering
True RMS monitoring of Ia, Ib, Ic, In, Van, Vbn, Vcn, Vab, Vbc, Vca, voltage/current 
unbalance, power factor, line frequency, watts, vars, VA, Wh, varh, VAh, and demand 
readings for A, W, vars, and VA. Maximum and minimum values of measured quantities are 
recorded and are date and time stamped.
A 40-character liquid crystal display is used for programming setpoints and monitoring 
values and...

1–6PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 1: OVERVIEW
FIGURE 1–3: Downloading Product Enhancements via the Serial Port
1.2.5 Open Architecture
PQMII units can initially be used as standalone meters. Their open architecture allows 
connection to other Modbus compatible devices on the same communication link. These 
can be integrated in a complete plant-wide system for overall process monitoring and 
control. 

CHAPTER 1: OVERVIEW
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL1–7
1.3 Optional Features
1.3.1 Transducer Input/Outputs
Four isolated 4 to 20 mA (or 0 to 1 mA depending on the installed option) analog outputs 
are provided that can replace up to eight transducers. The outputs can be assigned to any 
measured parameters for direct interface to a PLC.
One 4 to 20 mA analog input is provided to accept a transducer output for displaying 
information such as temperature or water level.
An additional rear...

1–8PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 1: OVERVIEW
FIGURE 1–5: Switch Inputs and Outputs Relays
1.3.3 Power Analysis Option
Non-linear loads (such as variable speed drives, computers, and electronic ballasts) can 
cause unwanted harmonics that may lead to nuisance breaker tripping, telephone 
interference, and transformer, capacitor or motor overheating. For fault diagnostics such 
as detecting undersized neutral wiring, assessing the need for harmonic rated 
transformers, or judging...

CHAPTER 1: OVERVIEW
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL1–9
Voltage and current waveforms can be captured and displayed on a PC with the EnerVista 
PQMII Setup Software or EnerVista Viewpoint . Distorted peaks or notches from SCR 
switching provide clues for taking corrective action.
FIGURE 1–7: Captured Waveform
Alarms, triggers, and input/output events can be stored in a 150-event record and time/
date stamped by the internal clock. This is useful for diagnosing problems and system...

1–10PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 1: OVERVIEW
FIGURE 1–8: Data Logger
Routine event logs of all measured quantities can be created, saved to a f ile, and/or 
printed.
For additional information on waveform sampling and analysis features, see Power 
Analysis on page 4–13.
The power analysis option also provides a Trace Memory feature. This feature can be used 
to record specif ied parameters based on the user def ined triggers. 

CHAPTER 1: OVERVIEW
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL1–11
FIGURE 1–9: Trace Memory Capture 

1–12PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 1: OVERVIEW
1.4 EnerVista PQMII Setup Software
1.4.1 Overview
All data continuously gathered by the PQMII can be transferred to a third party software 
program for display, control, or analysis through the communications interface. The 
EnerVista PQMII Setup Software allows the user to view and manipulate this data and 
assists in programming the PQMII. Some of the tasks that can be executed using the 
EnerVista PQMII Setup Software package...