IEC62052-11

Ring Wave Immunity Test

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.

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.

The Stability of IEC Standards

Meter manufacturers, utility laboratories and type testing institutes have planning security until year 2025.

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.

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.

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.

The Initial Start-Up for Energy Meters

Electronic energy meters are like small computers. The need some time for starting up.

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…

Repeatability Test for Energy Meters

Another new test introduced by the IEC62052-11 Edition 2 is the repeatability test.

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.

No Load Test for Energy Meters 2020

With publishing of the Edition 2 of IEC62052-11 the minimum run time calculation formula has changed.

Odd Harmonics in the Current Circuit

Two more tests for odd harmonics have been added to IEC 62052-11 edition 2.