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ADE7858 with Rogowski / Integrator starts at high value

Question asked by DavidX on May 18, 2017
Latest reply on May 24, 2017 by DavidX

Setup:

Chip: ADE7858

Rogowski Coil: PA3208NL  -> 383 uV/A @ 50Hz

PGA GAIN: 16x

xIGAIN: 3692

 

If i restart the Chip with no current flowing throw the Rogowski coil or Current Input left open it looks like this:

 

It tooks more then 1 Minute until the value goes down to 0.04763 Ampere:

 

Ampere: 8341322 (83.41322 A)
Ampere: 5921994 (59.21994 A)
Ampere: 1162826 (11.62826 A)
Ampere: 803365 (8.03365 A)
Ampere: 552252 (5.52252 A)
Ampere: 229504 (2.29504 A)
Ampere: 157783 (1.57783 A)
Ampere: 36036 (0.36036 A)
Ampere: 4001 (0.04001 A)
Ampere: 4763 (0.04763 A)

 

In this Time also the watt hour registers accumulate values!

 

Is there any workaround?

 

Thank you!

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