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Member

Join Date: Aug 2012
Posts: 8

Master-Slave Connection for OLTC Connection

03/02/2017 1:59 PM

We have two(2) 16MVA power transformers with an on load tap controller which are operated in parallel. We have been having problems tap recently so we contacted the OEM, Brush, to send us a technician to help us upgrade. The old tap which is tapcom1 has N30/N31 (T24 and T26) for master-slave selection. The new controller does not clearly indicate in its wiring diagram where and how to achieve this. Can anyone help us ? We, together with the Brush technician, have been unsuccessful.

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Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 17221
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#1

Re: MASTER-SLAVE CONNECTION FOR OLTC CONNECTION

03/02/2017 2:50 PM

You need to search for the manual with the model and serial numbers at the manufacturers website... What is the brand and model?

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Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
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#2

Re: MASTER-SLAVE CONNECTION FOR OLTC CONNECTION

03/03/2017 6:14 AM

Without knowing the new tap controller type we can’t help you.

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Member

Join Date: Aug 2012
Posts: 8
#3
In reply to #2

Re: MASTER-SLAVE CONNECTION FOR OLTC CONNECTION

03/04/2017 4:56 AM

Two(2) of AT 316.44/300L SN:965199 and 965200

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Member

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Posts: 8
#4
In reply to #3

Re: MASTER-SLAVE CONNECTION FOR OLTC CONNECTION

03/04/2017 5:06 PM

Thank you all we have been able to overcome the wiring problem but now confronted with a new problem. We are using MVGC as the avr. At certain taps the follower does not follow the master. The tap number this happens is unpredictable. Can anyone help

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