【PM5560】Starting Current and Accuracy of PM5560

[Miyai]

Hello 

I need advice on whether my understanding of the current measurement of PM5560 is correct.

The minimum value for current measurement is 5 mA.

However, 5-49mA cannot guarantee the specified accuracy.

The range in which the accuracy of the specified can be maintained is from 50 mA to 10 A.

Is the above idea correct?

I would like to confirm the above as the explanation differs from the ION9000 and other manuals.

Best regards,

Miyai

[Charles_Murison]

Hello @Miyai ,

When you say "explanation differs from the ION9000 and other manuals." What in particular are you referring to in the ION9000 manual?

If you are saying the starting current for ION9000 is different than PM5560, this could be explained that these are different meters with different nominal currents.

Regards,

Charles

[Miyai]

Hello @Charles_Murison 

ION9000 manual was described below.

I understand because the ”accuracy range” is clearly stated.

However, I do not understand exactly what the PM5500 manual describes.

Is it correct to assume that the area marked below is the accuracy range?

I would like to confirm this just to be sure, as I have received an inquiry from a client.

Best regards,

Miyai

[Ramasamy_N · Accepted solution]

Hi @Miyai 

The PM5500 starting current is 0.1% of nominal current (5mA) which will not claim any accuracy for this range 0.1% to 1%. (5mA to 50mA) in the standards like IEC62053-22 that we comply. 

The 50mA to 250mA test points will have ±0.4% allowed error even for Class 0.2 meters. 

Regards, 

Ramasamy N 

[Miyai]

Hi @Ramasamy_N 

I understand.
Thanks for your advice.

Best regards,

Miyai