trumeter APM-CT Digitales Amperemeter User Manual

trumeter APM-CT Digitales Amperemeter

Product Information

The APM CT Meter is a device designed for engineers who need an efficient way to monitor and display data. It accepts various electrical inputs and displays the data on its integrated multiformat display. The APM is specifically designed to be installed in electrical cabinets or display panels. It offers two independent outputs that can be configured as digital set-point outputs or 4-20mA monitor outputs.

The CT Meter is intended to be used with an external current transformer. It is important to note that the meter should never be directly connected to a live circuit.

Usage Instructions

1. Read the complete instructions before installation and operation of the unit.
2. Ensure that installation and maintenance are carried out by suitably qualified and competent personnel only.
3. Take necessary precautions to avoid electric shock during installation and operation.
4. Use the DIP switches located on the back of the unit to set the CT Meter bar graph range and the current transformer (CT) ratio if used. The CT ratio is displayed as the target value.
5. If using external current transformers, refer to the operating specification for input range and other relevant values.
6. For custom settings, use the software application provided with the APM.
7. All circuits connected to the meter’s connectors must be limited-energy and insulated by double/reinforced insulation from mains voltages, following IEC 61010-1:2010 standards.
8. Failure to install or operate the unit according to the above requirements may compromise electrical safety.

Wiring Diagram:
To use the CT Meter with a current transformer, follow the wiring diagram provided in the user manual.

Safety Warnings:

• Risk of Danger. Read complete instructions prior to installation and operation of the unit.

• CAUTION: Risk of Danger
  Read complete instructions prior to installation and operation of the unit

• CAUTION: Risk of electric shock

Before installation, read the Safety Warnings overleaf.

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 multiformat display. The APM has been designed for installation into electrical cabinets or display panels. Output models include two independent outputs that can be configured by the user to be either digital set-point outputs or 4-20mA monitor outputs.

DIP Switches

The DIP switches are on the back of the unit.

• =Using external 5A secondary current transformer

Operating Specification

Use the DIP switch to set the CT Meter bar graph range, and the current transformer (CT) ratio if used. The CT ratio is shown as the target value. Use the software to set other value CTs.

Operating specification

 | VALUE| UNIT
INPUT|  |
Input Range (CT Output Current)| 0-5 A| I AC
Min CT Power (Burden)| 1| VA
Input range (via external current transformer)| 0-10,000 A| I AC
Input Current Frequency| 45-65| Hz
Input Impedance| 10| mΩ
Accuracy| 0.5| %
Resolution| 1| mA
Sample rate| 8| KHz
Display modes| RMS|

The APM CT meter has been designed to be used with an external current transformer. Never connect the meter directly to a live circuit.

Size

• Size of the cutout in the panel: 68 x 68mm (2.68in) +0.7 -0mm

Wiring Diagram

CT METER
Using Current Transformer

WARNING:
INSTALLATION AND MAINTENANCE MUST BE CARRIED OUT BY SUITABLY QUALIFIED AND COMPETENT PERSONNEL ONLY. HAZARDOUS VOLTAGES MAY BE PRESENT ON THE CONNECTION TERMINALS.

INSTALLATION

• Install this product in accordance with local regulations, codes, and instructions.
• All fuses must be 0.5A / 250V Type F 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 meters long.
• If signal cables are routed outside the building, install extra surge-protection devices.
• Power supply, current input, USB, and all outputs: Observe maximum allowable voltages.

All circuits connected to these connectors must be limited-energy and insulated by double/reinforced insulation from mains voltages according to IEC 61010-1:2010

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

Environment

Temperature – operating
Temperature – storage
Altitude
Relative Humidity (non-condensing) – Continuous
Relative Humidity (non-condensing) – Intermittent
Pollution Degree (IEC664)
IP rating (from the front)
NEMA Rating (from the front)
Vibration
Shock

Power supply

Input
Max Power
Isolation
Supply Frequency
Display
Number of digits
Digit height
Number of bar-graph segments
Number of starburst message characters
Backlight colours
LCD
Digit update frequency
Bar-graph update frequency
Viewing angle

Open Collector Outputs

Max voltage (open collector outputs)
Max current (open collector outputs)

Analogue Output

Output
Accuracy
Resolution
Connections
Type
Wire type
Min. cable temperature rating
Wire strip length
Wire gauge
Torque

Certification

CE
IEC 61010-1
In the Box
APM
Getting started & safety guide
Gasket
Retaining clip
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 a panel inside front: 55mm (2.17in) incl. external connections. Weight: 180 grams.

Outputs When Powering APM from DC Supply

4-20 mA analogue output using setpoint 1.

Using a diode-protected relay on setpoint 1.

Outputs when powering APM from AC supply

When powering from an AC supply only connect isolated devices or other APMs to the COM terminal
(in this application SP1 was configured as an analog output using the APM Configurator)

Reset

Use the Reset input with the peak hold function

You need the software to configure the setpoints and outputs.
For more details, output configurations, and the software, visit www.trumeter.com/apm.

Contact

Trumeter

• Pilot Mill, Alfred Street, Bury, BL9 5EF
• web: www.trumeter.com.
• Tel: +44 161 674 0960
• Email: sales.uk@trumeter.com.

References

• Home - Trumeter
• Advanced Panel Meters - Trumeter

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