Short Interruption and Dip Tests IEC62052-11

The International Electrotechnical Commission (IEC) has released the edition 2 of the IEC62052-11. Release date was 29.06.2020. This edition includes several significant technical changes with respect to the previous edition.

Today we take a closer look at the chapter 9.3.2

Voltage dips and short interruptions

The intent of these tests is to ensure that the meter is immune to dipsWhat is a Voltage Dip Event?What is a Voltage Dip Event? and short interruptions that commonly occur on the mains power supply.

The IEC standard provides only a table. To make the requirements more easy to understand, we have converted the table in qualitative graphics. These graphics are showing the number of cycles for AC meters with a nominal frequency of 50 Hz. For the 60 Hz values please take a look at table 16 of the IEC62052-11:2020.

General Conditions
The voltage circuits are energized with their lowest specified nominal voltage and without current.
Additionally, for three-phase meters:
The voltage interruption tests (test 1 … 4) have to be done at the same time for all three phases. The voltage dip tests (test 5 … 9) are done phase by phase (Ph – N). The other phases remain connected to the supply voltage Un.
For three-phase three wire meters the phase-phase voltages are tested. The other phases remain connected to the supply voltage.

Voltage Interruption, Test 1

IEC62052-11-Edition-2-voltage-interruption-test-1
IEC62052-11-Edition-2-voltage-interruption-test-1

Voltage Interruption, Test 2

IEC62052-11-Edition-2-voltage-interruption-test-2
IEC62052-11-Edition-2-voltage-interruption-test-2

Voltage Interruption, Test 3

IEC62052-11-Edition-2-voltage-interruption-test-3
IEC62052-11-Edition-2-voltage-interruption-test-3

Voltage Interruption, Test 4

IEC62052-11-Edition-2-voltage-interruption-test-4
IEC62052-11-Edition-2-voltage-interruption-test-4

Voltage Dip, Test 5

IEC62052-11-Edition-2-voltage-dip-test-5
IEC62052-11-Edition-2-voltage-dip-test-5

Voltage Dip, Test 6

IEC62052-11-Edition-2-voltage-dip-test-6
IEC62052-11-Edition-2-voltage-dip-test-6

Voltage Dip, Test 7

IEC62052-11-Edition-2-voltage-dip-test-7
IEC62052-11-Edition-2-voltage-dip-test-7

Voltage Dip, Test 8

IEC62052-11-Edition-2-voltage-dip-test-8
IEC62052-11-Edition-2-voltage-dip-test-8

Voltage Dip, Test 9

IEC62052-11-Edition-2-voltage-dip-test-9
IEC62052-11-Edition-2-voltage-dip-test-9

Acceptance Criteria

Simplified
During the test, a temporary degradation or loss of primary functions is acceptable.
Items to monitor for evaluation:

Thank you for reading. You can leave a comment after the dip.

Editor's note: This article was originally published in July 2020 and has been updated for comprehensiveness.

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