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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September 23, 2023
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January 2, 2024
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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March 29, 2024
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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February 16, 2024
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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November 15, 2023
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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November 14, 2023
Load Limiting for Energy Meters
Electronic energy meters with a load switch can be programmed for a maximum load. If a consumer exceeds the limit, he will be disconnected
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January 1, 2024
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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November 7, 2023
Selection of Current Instrument 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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February 26, 2024
Cross-sections for electricity wiring
Each conductor wire has a resistance. Resistance means heat development inside the wire. Technically it's a loss.
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January 1, 2024
Electrical Power Supply Systems
Usually the power supply systems are named with single phase, three-phase three wire or three-phase four-wire. The German VDE and the IEC60364-1 have unified the supply systems based on grounding.
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March 20, 2024
Maximum Current for Energy Meters
Energy meters have certain characteristics, including maximum current. It is the basis for all types of meter tests.
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April 16, 2024
The TID Clock is ticking
If you are using STS prepayment energy meters you might remember that updates are required for the key management centre (KMC), the security modules and the vending software.
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