CLOUGLOBAL News

Don't touch anything!

In your utility laboratory and for your on-site workers you take of course care for a proper training on the job and especially for personal safety.

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.

Test Bench Stability of the Output Settings

In customer requests and tenders you can still find extensive requirements for the stability of the output settings.

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.

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.

The Energy Meter Register Resolution

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