The IEC 62052-11 Ed.2 comes with a lot of changes for meter type testing. Another new introduced test for electromagnetic compatibility (EMC) is the ring wave immunity test.
January 2, 2024
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Electrostatic Discharge Test for Energy Meters
Sometimes it happens that you touch the door knob and you get an electrical shock. It's not dramatically for your body but an unpleasant feeling.
October 27, 2023
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The Stability of IEC Standards
Meter manufacturers, utility laboratories and type testing institutes have planning security until year 2025.
February 26, 2024
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The Critical Change Value
The critical change value indicates the maximum amount of change allowed in the meter's energy registers during disturbance tests without any current flowing in the meter's current circuits.
October 26, 2023
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The Optical Test Output and Pulses
Each electronic energy meter must have at least one optical test output. Commonly its named with flashing pulse diode or similar.
December 19, 2023
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Where is the Basic Current?
In the last 100 years we had a lovely Ib for direct connected meters. Now the name has changed to nominal current In.
November 18, 2023
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The Initial Start-Up for Energy Meters
Electronic energy meters are like small computers. The need some time for starting up.
August 23, 2023
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Influence of Fast Load Current Variations
The load current can vary frequently with high amplitude. The test conditions in the older versions of the IEC62052-11 have all be static…
November 19, 2023
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Repeatability Test for Energy Meters
Another new test introduced by the IEC62052-11 Edition 2 is the repeatability test.
October 25, 2023
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Influence of Self Heating
We need to figure out whether the occurring internal heat is causing a temporary error drift above the allowed limits for variation.
January 4, 2024
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No Load Test for Energy Meters 2020
With publishing of the Edition 2 of IEC62052-11 the minimum run time calculation formula has changed.
November 21, 2023
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Odd Harmonics in the Current Circuit
Two more tests for odd harmonics have been added to IEC 62052-11 edition 2.