EN: Safety Warnings
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 breaking capacity of 35A or greater.
• All conductors carrying hazardous voltage must have external switching or
disconnect 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
energy 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 61010-1:2010
• To reduce risk of electric shock always disconnect the power circuit being monitored
before 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. 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 and 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 destroy the unit.
Specification
Control Outputs Isolation
EN: ENGLISH VALUE
Size
68 x 68mm (2.68in) +0.7 -0mm
EN: Size of the cutout in the panel:
Front Panel Buttons
Change Parameter:
Press to move between parameters
Auto Scroll Parameters:
Press to automatically switch
parameters every 3 seconds
028638-01 Issue 1.0 04/20
Environment
Temperature - operating –10 to +50°C
Temperature - storage –40 to +70°C
Altitude 2000 metres
Relative Humidity (non-condensing) - Continuous 0 – 85 %
Relative Humidity (non-condensing) - Intermittent 0 – 95 %
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
Power supply
Input 100-277VAC
Max Power 2W
Supply Frequency 50-60Hz
Isolation Reinforced
Display
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
+/-70° Vertical
Open Collector Sinking Outputs
Max voltage (open collector outputs) 24 VDC
Max current (open collector outputs) 15 mA
Analogue Output
Output 4-20 mA
Accuracy 0.50 %
Resolution 0.02 mA
Connections
Type Screw Terminals
Wire type Copper (Solid or
Stranded)
Min. cable temperature rating 65°C (149°F)
Wire strip length 6.5mm to 7mm
(0.26” to 0.28”)
Wire gauge 0.8mm² - 3.3mm²
(18AWG to 12AWG)
Torque 0.5-0.6Nm
(4.42-5.31 lbf-in)
In the Box
APM
Getting started & safety guide
Gasket
Retaining clip
Dimensions & Weight:
Panel Cut-out: 68 x 68 mm (2.68 in) +0.7 -0 mm (0.02
in). Max. panel thickness: 10 mm.
Dimensions:Depth behind panel inside front: 55mm
(2.17in) incl. external connections. Weight: 220 grams
Control
Inputs
Analog
Output
USB
Current
Input
Voltage
Input
Power Supply
Digital Outputs
Isolation barriers:
Galvanic
Isolation Barrier
Modbus
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