APM
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENT MEASUREMENT
N
V1
V2
V3
VOLTAGE MEASUREMENT
MODBUSAND OUTPUTS
A
B
GND
A
B
GND
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENTMEASUREMENT
N
V1
V2
V3
VOLTAGEMEASUREMENT
MODBUSAND OUTPUTS
+
+
+
+
COM
IP1
IP2
IP3
IP4
PLC
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENT MEASUREMENT
N
V1
V2
V3
VOLTAGE MEASUREMENT
MODBUSAND OUTPUTS
+88.8
4-20mA
mA
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENTMEASUREMENT
N
V1
V2
V3
VOLTAGEMEASUREMENT
MODBUSAND OUTPUTS
L
FUSE
NOTE: DO NOT CONNECT CT SECONDARYS TOEARTH.
CT’S EARTHED THROUGH N TERMINAL
LOAD
N
L
SUPPLY
N
FUSE
POWER METER
EN: Before installation, read the
Safety Warnings overleaf.
CAUTION: Risk of Danger
Read complete instructions prior to installation and
operation of the unit
CAUTION: Risk of electric shock
EN
Intended Use: The APM has been specifically
designed for engineers requiring an effective way to
monitor and display data. The APM accepts a range of
electrical inputs (depending on the model) and
displays the data on its integrated multi-format display.
The APM has been designed for industrial use only,
by installation into electrical cabinets or display
panels.
Operating Specification
Measurement Range
Voltage (V)
Current (I) 0–5A (CT only)
Power (W/VA/VAr)
Frequency 45 – 65 Hz
Measurement Accuracy of full scale
Voltage (V) 1%
Current (I) 1%
Frequency 1%
THD 5%
Power (W/VA/Var) 1%
L-L: 10 - 600VAC
L-N: 10 - 300VAC
0-999,999MW
Dependant on CT ratio
Wiring Diagrams
MODBUS CONNECTIONS DIGITAL OUTPUT CONNECTIONS
ANALOG OUTPUT CONNECTIONS SINGLE PHASE POWER METER CONNECTIONS - LINE POWER
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OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PS
U
U
SB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENTMEASUREMENT
N
V1
V2
V3
VOLTAGEMEASUREMENT
MODBUSAND OUTPUTS
L
FUSE
NOTE: DO NOT CONNECT CT SECONDARYSTO EARTH.
CT’S EARTHEDTHRO UGH NTERMINAL
LOAD
N
L
SUPPLY
N
FUSE
L
N
PSU SUPPLY
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENT MEASUREMENT
N
V1
V2
V3
VOLTAGE MEASUREMENT
MODBUSAND OUTPUTS
L1
FUSE
NOTE: DO NOT CONNECT CT SECONDARYS TO EARTH.
CT’S EARTHED THROUGH N TERMINAL
LOAD
N
L1
SUPPLY
N
FUSE
FUSE
L2
L2
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENTMEASUREMENT
N
V1
V2
V3
VOLTAGEMEASUREMENT
MODBUSAND OUTPUTS
L1
FUSE
NOTE: DO NOT CONNECT CT SECONDARYS TO EARTH.
CT’S EARTHED THROUGH N TERMINAL
LOAD
N
L1
SUPPLY
N
FUSE
L2
L2
FUSE
L
N
PSU SUPPLY
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENT MEASUREMENT
N
V1
V2
V3
VOLTAGE MEASUREMENT
MODBUSAND OUTPUTS
FUSE
L1
FUSE
LOAD
N
L1
SUPPLY
N
FUSE
L2
L2
NOTE: DO NOT CONNECT CT SECONDARYS TO EARTH.
CT’S EARTHED THROUGH NT ERMINAL
L3
L3
FUSE
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENT MEASUREMENT
N
V1
V2
V3
VOLTAGE MEASUREMENT
MODBUSAND OUTPUTS
L1
FUSE
LOAD
L1
SUPPLY
FUSE
L2
L2
FUSE
L
N
PSU SUPPLY
NOTE: DO NOT CONNECT CT SECONDARYS TO EARTH.
CT’S EARTHED THROUGH NT ERMINAL
L3
L3
FUSE
EARTH
OP1-
OP1+
OP2-
OP2+
AOUT
NC
B
A
0V
N
L
PSU
USB
A1+
A1-
A2+
A2-
A3+
A3-
CURRENT MEASUREMENT
N
V1
V2
V3
VOLTAGE MEASUREMENT
MODBUSAND OUTPUTS
L1
FUSE
LOAD
L1
SUPPLY
FUSE
L2
L2
FUSE
L
N
PSU SUPPLY
NOTE: DO NOT CONNECT CT SECONDARYS TO EARTH.
CT’S EARTHEDT HROUGH NT ERMINAL
L3
L3
FUSE
N
N
EARTH
Wiring Diagrams
SINGLE PHASE POWER METER CONNECTIONS - LOCAL POWER
SPLIT PHASE POWER METER CONNECTIONS - LOCAL POWER THREE PHASE AND NEUTRAL POWER METER CONNECTIONS - LINE POWER
SPLIT PHASE POWER METER CONNECTIONS - LINE POWER
THREE PHASE (NO NEUTRAL) POWER METER CONNECTIONS - LOCAL
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POWER
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THREE PHASE POWER METER CONNECTIONS with PT AND CT - LOCAL
POWER
Specification
Control
Inputs
Analog
Output
USB
Current
Input
Voltage
Input
Power Supply
Digital Outputs
Isolation barriers:
Galvanic
Isolation Barrier
Modbus
Environment
Relative Humidity (non-condensing) - Continuous 0 – 85 %
Relative Humidity (non-condensing) - Intermittent 0 – 95 %
Power supply
Display
Open Collector Sinking Outputs
Analogue Output
Connections
In the Box
Dimensions & Weight:
Panel Cut-out: 68 x 68 mm (2.68 in) +0.7 -0 mm (0.02
Dimensions: Depth behind panel inside front: 55mm
(2.17in) incl. external connections. Weight: 220 grams
EN: ENGLISH VALUE
Temperature - operating –10 to +50°C
Temperature - storage –40 to +70°C
Altitude 2000 metres
Overvoltage category (IEC664) II
Pollution Degree (IEC664) 2
IP rating (from the front) IP65
NEMA Rating (from the front) Type 4 & Type 12
Vibration
Shock
Input
Max Power
Supply Frequency
Isolation Reinforced
Number of digits 4 x 3
Digit height 7.5 mm
Number of bar-graph segments 20 per phase
Number of starburst message characters 6
Backlight colours Red, Green, White
LCD Positive or Negative
Digit update frequency 500ms
Bar-graph update frequency 500ms
Viewing angle +/-70° Horizontal
Max voltage (open collector outputs) 24 VDC
Max current (open collector outputs) 15 mA
Output 4-20 mA
Accuracy 0.50 %
Resolution 0.02 mA
Type Screw Terminals
Wire type Copper (Solid or
Min. cable temperature rating 65°C (149°F)
Wire strip length 6.5mm to 7mm
Wire gauge 0.8mm² - 3.3mm²
Torque 0.5-0.6Nm
APM
Getting started & safety guide
Gasket
Retaining clip
in). Max. panel thickness: 10 mm.
100-277VAC
2W
50-60Hz
+/-70° Vertical
Stranded)
(0.26” to 0.28”)
(18AWG to 12AWG)
(4.42-5.31 lbf-in)
WARNING: INSTALLATION AND MAINTENANCE MUST BE CARRIED OUT
BY SUITABLY QUALIFIED AND COMPETENT PERSONEL ONLY.
HAZARDOUS VOLTAGES MAY BE PRESENT ON THE CONNECTION
TERMINALS.
INSTALLATION
• Install this product in accordance with local regulations, codes and instructions.
• An external fuse must be fitted in-line with the PSU. Recommended fuse: 0.5A/300V
with a b
reaking capacity of 35A or greater.
• All conductors carrying hazardous voltage must have external switching or
disconne
ct mechanisms fitted that provide at least 3 mm of contact separation in all
poles.
• Signal cables connected to this device must not exceed 30 metres long.
• If signal cables are routed outside the building, install extra surge-protection
devices.
• Observe maximum allowable voltages. USB, Modbus and output must be limited
ener
gy and insulated from voltage and current inputs by double/reinforced insulation
according to IEC 61010-1:2010.
• All current transformers must be certified to IEC 61010-1:20
• To reduce risk of electric shock always disconnect the power circuit being monitored
befor
e installing or servicing current transformers.
• If this device is used outside it must be installed in an IP65 rated enclosure.
Failure to install or operate the unit in accordance with the
above requirements may impair the electrical safety of the unit.
Voltage measurements: An external UL recognized or listed
overcurrent protection device (fuse or circuit breaker) must be
fitted in-line with the voltage lead. Recommended fuse: 0.5A
Type F with a breaking capacity of 35A or greater. Fuse voltage
rating must be greater than the maximum voltage that will be
applied to the meter.
10
MAINTENANCE
• Before cleaning, inspection or maintenance, isolate all power sources to the unit.
• There are no user-serviceable parts inside this unit. Never open the case.
• Inspect all external wiring connections at regular intervals. Replace any damaged
wiring a
nd tighten any loose connections.
• To clean the unit, use a dry cloth to wipe the casing.
• Take great care connecting the supply. If you connect power to the wrong terminals,
it may de
stroy the unit.
Control Outputs Isolation
Size
68 x 68mm (2.68in) +0.7 -0mm
EN: Size of the cutout in the panel:
EN: Safety Warnings
Front Panel Buttons
Change Parameter:
Press to move between parameters
028638-01 Issue 1.0 04/20
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Auto Scroll Parameters:
Press to automatically switch
parameters every 3 seconds
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