Varplus logic with 3rd party capacitors

[Stuart_Cheng]

Hi All,

As we know one of the key features of the Varplus logic is to measure the remaining capacity of capacitors.

 

 Based on the information shown in the above slide, I have two questions.

• It seems that this feature is still working even with 3^rd party capacitors?
• Can the Varplus logic be used as a tool in a brownfield to measure the remaining capacity of the capacitors (both SE and 3^rd party)? Kind of service helps customers determine when to replace the old capacitors. 

Thanks

[RavindraKulkarni]

Hello,

This feature( remaining capacity) will work for third party capacitors also. The purpose of this function is to make the customer aware of the remaining capacity. There is also an alarm SPL/NR alarm which is generated when the step value falls below 75% of the original capacity. Once this alarm is generated for a step that step is converted to Fix OFF. It's recommended to replace the capacitor when this alarm is generated.

[Stuart_Cheng]

Hi @RavindraKulkarni 

Thanks for your information.

From the slide I showed above, Varplus Logic will evaluate dQ (just before – just after) every time a step is switched, so I guess we can use Varplus Logic in a brownfield project (which currently does not have SE APFR) to measure the remaining capacity of the old capacitors. Am I correct in that? Thanks