Hello friends,
After so many requests today we are here with a video on transformer auxiliary relay.

This video explains all the basic concepts about different types of auxiliary protections that are part of transformer , its importance and how they are connected with the transformer and also about their connections with control panel.

Below mentioned are few important links that may be helpful through the video.

Auxiliary relay:
Master Relay:    • Master relay/ Lock out relay - Basic ...  
Annunciator:    • Annunciator- Basic wiring and applica...  
Bucholz Relay:    • Inside the Buchholz relay|| buchholz ...  


TimeStamp
Transformer Protection: 00:26
Transformer trouble relay: 00:54
Location and use of auxiliary/trouble relay in transformer: 01:02
Buchholz relay, OTI, WTI, PRV, OSR, MOG: 01:04
Terminal block in Marseling kiosk box “MK Box”: 03:36
Alarm and tripping Contact: 04:16
Wiring of transformer trouble relay in MK Box: 04:20
Buchholz relay: 04:05
Winding temperature indicator: 05:14
Oil temperature indicator: 05:22
Pressure relief valve: 06:55
OLTC Pressure relief valve: 07:35
Oil surge Relay: 08:13
Magnetic oil gauge 08:50