Cause Of Transmission - Siemens 7SR242 Duobias Technical Manual

Transformer protection relay

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7SR242 Duobias Technical Manual

3.2 Cause of Transmission

The cause of transmission (COT) column of the

transmission for these frames. The following abbreviations are used:

Abbreviation

spontaneous event

general interrogation

local operation

remote operation

command acknowledge

Negative command acknowledge

Note: Events listing a GI cause of transmission can be raised and cleared; other events are raised only.

Chapter 4 - Page 20 of 92

"Information Number and Function"

table lists possible causes of

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