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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Recent Articles
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Used WordPress Plugins
The provided information is related only to our website (Twentyseventeen theme). Modify something only when you know what you are doing.
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WebSite Metering Results
Since we are metering specialists, we also keep an eye on our website performance. We are running WordPress on a GoDaddy server without any extras.
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Where is my Smart Meter?
When you deploy new energy meters you want to know the installation position. It’s helpful for various purposes
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Measurement Uncertainties for Test Benches
A test bench consists of several elements which can introduce additional variable errors.
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The Categories for Electrical Measurements
Sometimes you find in specifications terms like CAT III or CAT IV. These terms are given in IEC 61010-1
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The 2020 End of the Year Riddle
Before we come out again with interesting and metering related topics in the next year, please take a look at our brain-teaser quiz.
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The Christmas Gimmick 2020
Table Tennis (Pīngpāng qiú 乒乓球) is one of the top National sports in China. As a proof of concept we have remade a very old arcade game.
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Energy Meters and Hysteresis
You can find this term in a lot of technical documentations with more or less complicated explanations. We’d like to give some simple examples for the need of hysteresis in energy meters.
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My meter is running too slow
The end-user had an energy meter with rotating disk (electromechanical). These meters are usually already in the field for more than 30 years.
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Energy Saving with Little Helpers?
I recently stumbled over some advertisements related to plug-in or paste devices which are claimed to reduce the electricity bill by an average of 10%.
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User Interface Unit Simulator
By now the UIU/CIU short-codes are not unified. We have collected and merged all recent requests.
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How Mean is the Value?
CLOU energy meters and test equipment is measuring the true RMS value by waveform sampling. There are other methods, but they are less accurate.
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Power Grid Stability and Renewable Energy
With increasing percentage of renewable energy on power generation we will see more disturbances in the grid.
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Waveform Sampling for Electrical Measurements
The interactive graphics below shows the impact on sampling rates on different waveforms. The error calculation is based on true-rms for a wave with 360 samples and for training purpose only.
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The Over- and Under Voltage Disconnection
The phase to neutral supply voltage is controlled by the power generation companies and utilities by using transformers with on-load tap changers. Depending on the region you can find different supply voltages.
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The Over-Current Disconnect Function
Electronic meters with build-in relays can serve for various functionalities. By IEC62052-11 Ed.2 the name for this sort of relays is Supply Control Switch (SCS).
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Who pays for the Beep?
Electronic energy meters, especially those with STS payment functions have the ability to give an alarm. Low credit is a typical example.
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Load Limiting for Energy Meters
Electronic energy meters with a build-in load switch can be programmed for a maximum load. If a consumer exceeds the limit, he will be disconnected
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Selection of Voltage Transformers
Voltage instrument transformers (VT, sometimes also abbreviated with PT) are used on the primary side of medium- and high voltage distribution transformers.
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Selection of Current Transformers
Transformer operated energy meters need instrument transformers to reduce high voltage- and current values to lower quantities for measurement purpose.
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Kindly how can I silence my meter even after dailing 812# still it will revive on its own and starts beeping its really annoying.
The beep can only switch off temporarily for just one minute.
The beep appears because there is an alarm, either low credit, or overload, or tamper.
You can silence your meter permanently after you solve the alarm.
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
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.
How can someone test reactive energy kvarh in a meter test bench?
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.
which is the standard to be used for testing of for Reactive power in energy meter and what are the acceptable error margins?
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.
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
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).
Where can I find the operational manual for clou meter, with series number CL710K11
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.
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.
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.