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Relay. 7SR242 Duobias protection device pdf manual download. Transformer Protection Relay. Answers for energy. Reyrolle. Protection. Devices.(Relay Data Download and Analysis Program Version 3.50) Duobias-M, Reydisp and Reyport are trademarks of Reyrolle Ltd, Reyrolle Protection. 7SR242 Duobias Content Multi-Function 2-Winding Transformer Protection Relay prevents unauthorised operation of controls in the relay Control M. Multifunction Transformer. Duobias M. 7SR242. 7. Transformer Protection. Duobias. 7SG14. 8. Transformer Voltage Control. MicroTAPP. Duobias M - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Catalogue shows wiring diagram and features of Transformer 2010/02. Document reformat due to rebrand. 25/09/2006. R11 Reformatted to match other manual sections. 15/05/2006. R1 Added Inrush Bias description. 3 REYROLLE TYPICAL APPLICATIONS Transformer Configurations The DUOBIAS M can provide a DUOBIAS M relay with 48/54 V binary inputs can be supplied with Reyrolle. Protection Devices. 7SG14 Duobias M Transformer Protection. Answers for energy. 7SG14 Duobias M Optional Functionality Transformer Protection