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GE Power Management PQM Power Quality Meter 2-1 GE Power Management
PQM Power Quality Meter
2-1
2 INSTALLATION
2.1 PHYSICAL
2
2 INSTALLATION 2.1 PHYSICAL
2.1.1 MOUNTING
Physical dimensions and required cutout dimensions for the PQM 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 PQM.
Mount the unit on a panel or switchgear door to allow operator access to the keypad and indicators.
Figure 21: PHYSICAL DIMENSIONS 2-2
PQM Power Quality Meter
GE Power Management
2.1 PHYSICAL
2 INSTALLATION
2
2.1.2 PRODUCT IDENTIFICATION
Product attributes vary according to the configuration and options selected on the customer order. Before
applying power to the PQM, 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 22: PRODUCT LABEL
1.
MODEL NO: Shows the PQM configuration. The model number for a basic panel mount PQM is PQM.
The model number for a basic chassis mount PQM is PQM\ND. T20, C, and A appear in the model num-
ber only if the Transducer, Control, or Power Analysis options are installed.
2.
SUPPLY VOLTAGE: Indicates the power supply input configuration installed in the PQM. The PQM shown
in this example can accept any AC 50/60Hz voltage from 70 to 265 V AC or DC voltage from 90 to 300 V
DC.
3.
TAG#: An optional identification number specified by the customer.
4.
MOD#: Used if unique features have been installed for special customer orders. This number should be
available when contacting GE Power Management for technical support.
5.
VERSION: An internal GE Power Management number that should be available when contacting us for
technical support.
6.
SERIAL NO: Indicates the serial number for the PQM in numeric and barcode formats that should be avail-
able when contacting GE Power Management for technical support.
20
19
18
17
16
15
14
13
12
11
10
9
MAXIMUM CONTACT RATING
250 VAC 10A RESISTIVE
1/4HP 250VAC 1/2HP 125VAC
PQM
MODEL NO.:
CONTROL VOLTAGE:
SERIAL No.:
VERSION:
CUSTOMER TAG No.: 1234-567-89
90-300VDC
20VA
70-265VAC 50/60HZ 20VA
340.000
C6560001
PQM-T20-C-A
MADE IN
CANADA
g GE Power Management
PQM Power Quality Meter
2-3
2 INSTALLATION
2.1 PHYSICAL
2
2.1.3 REVISION HISTORY
The following table shows the PQM revision history. Each revision of the instruction manual corresponds to a
particular firmware revision. The manual revision is located on the title page as part of the manual part number
(the format is 1665-0003-
revision
). The firmware revision is loaded in the PQM and can be viewed by scrolling
to the
A4 PRODUCT INFO \ SOFTWARE VERSIONS \ MAIN PROGRAM VERSION
actual value message.
When using the instruction manual to determine PQM features and settings, ensure that the instruction manual
revision corresponds to the firmware revision installed in the PQM using the table below.
Table 21: REVISION HISTORY TABLE
INSTRUCTION
MANUAL P/N
MAIN PROGRAM
VERSION
1665-0003-C1
0.10
1665-0003-C2
0.20
1665-0003-C3
1.00
1665-0003-C4
1.10
1665-0003-C5
1.20
1665-0003-C6
1.21, 1.22
1665-0003-C7
2.00
1665-0003-C8
2.01
1665-0003-C9
2.02
1665-0003-CA
3.00
1665-0003-CB
3.01
1665-0003-CC
3.10
1665-0003-CD
3.13
1665-0003-CE
3.2x, 3.3x
1665-0003-CF
3.4x
1665-0003-CG
3.5x 2-4
PQM Power Quality Meter
GE Power Management
2.2 ELECTRICAL
2 INSTALLATION
2
2.2 ELECTRICAL
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 for suggested wiring. A minimal configuration includes connections for
control power, phase CTs/VTs, and the alarm relay; other features can be wired as required. Considerations for
wiring each feature are given in the sections that follow.
Table 22: PQM EXTERNAL CONNECTIONS
VT / CONTROL POWER ROW
CT ROW
SIGNAL UPPER ROW
1
V1 Voltage input
9
Phase A CT 5A
21
Analog shield
2
V2 Voltage input
10
Phase A CT 1A
22
Analog in
3
V3 Voltage input
11
Phase A CT COM
23
Analog in +
4
Vn Voltage input
12
Phase B CT 5A
24
Analog out com
5
Filter ground
13
Phase B CT 1A
25
Analog out 4+
6
Safety ground
14
Phase B CT COM
26
Analog out 3+
7
Control neutral ()
15
Phase C CT 5A
27
Analog out 2+
8
Control live (+)
16
Phase C CT 1A
28
Analog out 1+
17
Phase C CT COM
29
Switch 4 input
18
Neutral CT 5A
30
Switch 3 input
19
Neutral CT 1A
31
Switch 2 input
20
Neutral CT COM
32
Switch 1 input
33
+24 V DC switch com
34
Aux3 relay NC
35
Aux3 relay COM
36
Aux3 relay NO
37
Aux2 relay NC
38
Aux2 relay COM
39
Aux2 relay NO
40
Aux1 relay NC
41
Aux1 relay COM
42
Aux1 relay NO
43
Alarm relay NC
44
Alarm relay COM
45
Alarm relay NO
46
Comm 1 COM
47
Comm 1
48
Comm 1 +
49
Comm 2 COM
50
Comm 2
51
Comm 2 + GE Power Management
PQM Power Quality Meter
2-5
2 INSTALLATION
2.2 ELECTRICAL
2
Figure 23: REAR TERMINALS 2-6
PQM Power Quality Meter
GE Power Management
2.2 ELECTRICAL
2 INSTALLATION
2
This wiring diagram 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 24: WIRING DIAGRAM 4-WIRE WYE (3 VTs) GE Power Management
PQM Power Quality Meter
2-7
2 INSTALLATION
2.2 ELECTRICAL
2
The 2½ element 4 wire wye connection can be used for situations where cost or size restrictions limit the num-
ber of VTs to two. With this connection, Phase
V
bn
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 configuration will only provide accurate power measurements if the voltages are
balanced.
Figure 25: WIRING DIAGRAM 4-WIRE WYE (2 VTs)
NOTE 2-8
PQM Power Quality Meter
GE Power Management
2.2 ELECTRICAL
2 INSTALLATION
2
Four-wire systems with voltages 347 V L-N or less can be directly connected to the PQM without VTs. Select
the
S2 SYSTEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ VT WIRING: 4 WIRE WYE DIRECT
setpoint.
The PQM voltage inputs should be directly connected using HRC fuses rated at 2 A to ensure adequate inter-
rupting capacity.
Figure 26: WIRING DIAGRAM 4-WIRE WYE DIRECT (NO VTs) GE Power Management
PQM Power Quality Meter
2-9
2 INSTALLATION
2.2 ELECTRICAL
2
This diagram shows the typical 3-wire delta connection which will cover any voltage range. Select the
S2 SYS-
TEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ VT WIRING: 3 WIRE DELTA (2 VTs)
setpoint.
Figure 27: WIRING DIAGRAM 3-WIRE DELTA (2 VTs) 2-10
PQM Power Quality Meter
GE Power Management
2.2 ELECTRICAL
2 INSTALLATION
2
Three-wire systems with voltages 600 V (L-L) or less can be directly connected to the PQM without VTs. Select
the
S2 SYSTEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ VT WIRING: 3 WIRE DELTA DIRECT
setpoint.
The PQM voltage inputs should be directly connected using HRC fuses rated at 2 amps to ensure adequate
interrupting capacity.
Figure 28: WIRING DIAGRAM 3-WIRE DIRECT (NO VTs) GE Power Management
PQM Power Quality Meter
2-11
2 INSTALLATION
2.2 ELECTRICAL
2
For a single-phase connection, connect current and voltage to the phase A inputs only. All other inputs are
ignored. Select the
S2 SYSTEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ VT WIRING: SINGLE PHASE
setpoint.
Figure 29: SINGLE PHASE CONNECTION 2-12
PQM Power Quality Meter
GE Power Management
2.2 ELECTRICAL
2 INSTALLATION
2
The figure below shows two methods for connecting CTs to the PQM for a 3-wire system. The top drawing
shows the standard wiring configuration using three CTs. An alternate wiring configuration uses only two CTs.
With the two CT method, the third phase is measured by connecting the commons from phase A and C to the
phase B input on the PQM. This causes the phase A and phase C current to flow through the PQMs phase B
CT in the opposite direction, producing a current equal to the actual phase B current.
I
a
+ I
b
+ I
c
= 0 for a three wire system.
I
b
= (
I
a
+
I
c
)
For the CT connections above, the
S2 SYSTEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ PHASE CT
WIRING \ PHASE CT PRIMARY
setpoint must be set to
PHASE A, B, AND C
.
Figure 210: ALTERNATE CT CONNECTIONS FOR 3-WIRE SYSTEM
NOTE GE Power Management
PQM Power Quality Meter
2-13
2 INSTALLATION
2.2 ELECTRICAL
2
2.2.2 CONTROL POWER
The control power supplied to the PQM must match the installed power supply. If the applied
voltage does not match, damage to the unit may occur. Check the product identification to
verify the control voltage matches the intended application.
A universal AC/DC power supply is standard on the PQM. It covers the range 90 to 300 V DC and 70 to 265 V
AC at 50/60 Hz. It is not necessary to adjust the PQM if the control voltage is within this range. A low voltage
power supply is available as an option. It covers the range 20 to 60 V DC and 24 to 48 V AC at 50/60 Hz. Verify
from the product identification