In the last 100 years we had a lovely Ib for direct connected meters. Now the name has changed to nominal current In.
Electronic energy meters are like small computers. The need some time for starting up.
The load current can vary frequently with high amplitude. The test conditions in the older versions of the IEC62052-11 have all be static…
Another new test introduced by the IEC62052-11 Edition 2 is the repeatability test.
We need to figure out whether the occurring internal heat is causing a temporary error drift above the allowed limits for variation.
With publishing of the Edition 2 of IEC62052-11 the minimum run time calculation formula has changed.
The edition 2 of the IEC62052-11 has introduced two additional tests for odd harmonics.
Higher constant means faster testing. The most time-savings are coming from the no-load test and the starting test.
The main purpose of an electronic energy meter is the accurate metering of the customer consumption. The meter has registers for storing the various consumption values
The International Electrotechnical Commission (IEC) has released the edition 2 of the IEC62052-11.