Metering Blog

Here we are publishing answers on your questions related to electrical energy and metering. If you have questions, please use our contact form or write a comment below the related article.
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Accelerated Life Test for Energy Meters

Accelerated Life Test for Energy Meters

There are several ways to predict the reliability of an energy meter. The IEC provides a series of standards related to reliability tests or evaluations. ...
How does Net metering work?

How does Net metering work?

When you are generating power by solar or wind, you might produce more energy than you actually need. ...
Is there a Lifetime Calibration?

Is there a Lifetime Calibration?

Electronic energy meters are adjusted for life-time. A recalibration has to be done by country rules and regulations. ...
What will be the recorded demand?

What will be the recorded demand?

What will be the recorded demand if a constant load of 1 kW is applied through a 30 minute demand meter ? ...
How to get a Clear Tamper Token?

How to get a Clear Tamper Token?

A clear tamper token is required to unlock a STS meter showing the tamper sign. Only the local power company can issue this token code. ...
What is a Load-Switch?

What is a Load-Switch?

A latching relay keeps its contact position indefinitely without power applied to the coil. ...
Make the Most of Portable Meter Test

Make the Most of Portable Meter Test

In order to protect the utility revenue it's essential to do regular on-site tests on meter installations. ...
Johannesburg Ransomware Attack

Johannesburg Ransomware Attack

Cyberattacks against critical infrastructure have become common... ...
Security for Optical Ports on Energy Meters

Security for Optical Ports on Energy Meters

Optical ports provide local access for service engineers during installation or maintenance of energy meters. Households have physical access to their energy meter and might try to get access to the meter software. ...
European Accreditation

European Accreditation

The European Accreditation Association has per country one member. This members are allowed to approve test laboratories for calibration. ...

12 Replies to “Metering Blog”

  1. I have a clou meter token and am just wondering how i can silence the beeping alarm that goes off when your are low on tokens. Its kinda annoying. Ypur help will be highly appreciated.
    Regards,
    Steve

    1. Steve, try code 812 on your UIU (user interface unit) and confirm by pressing the enter-button (blue or red). If it doesn’t work, please tell us the meter model type.

    1. If the energy meter has a function for measuring reactive energy, it must have a test output (a flashing diode) indicating the reactive consumption. This test output has a meter constant, indicated in e.g. pulses per kvarh. You set measurement mode in your test plan to reactive measurement and adjust the scanning heads in front of the reactive diode. All other procedure is the same like active accuracy test. The settings for reactive power is done inside the test bench and reference standard automatically.

  2. which is the standard to be used for testing of for Reactive power in energy meter and what are the acceptable error margins?

    1. The IEC 62053-23 is applicable for static meters for reactive energy (classes 2 and 3). The allowed errors for accuracy are given in the related tables. If you have a meter with reactive class 2, the allowed error is +/-2% for all balanced loads above 0.1 Ib and power-factor 1.

  3. My CLOU (CL710K11) just shows zeros when I try to enquire balance or input new token, I think it is not communicating with the power source

    1. The possible reason could be long communicate distance or the power cable quality,plsase use another socket and try again. if still doesn’t work,pls confirm whether the UIU address is right one( enter 1593570 plus the meter number to set the UIU address).

  4. Where can I find the operational manual for clou meter, with series number CL710K11

    1. Thank you for your message. The operation manual is for the power company or utility. End users get an introduction by the power company and a reference card with the user interface short codes. The configuration for each power company is different. If you are in doubt about a function, ask your power supplier.

    2. My CL710K11 meter
      Red light is lit next to the word “WIRING” and I noticed low power in house today. Any idea what could be the problem.

      1. It indicates a poor communication between the user interface unit and the meter. One reason behind can be a very low supply voltage from the grid.

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