Analog Channel Configuration - ABB RELION REX640 Technical Manual

Section 7
Condition monitoring functions
7.2.4
7.2.5
1272
The hot-spot temperature and the momentary ageing rate are calculated based on the
IEC 60076-7 or the IEEE C57.91-2011 standard, depending upon a user defined
setting. The total ageing and loss of transformer insulation life is calculated in years.
The function generates WARNING and ALARM signals if the calculated hot-spot
temperature exceeds the set value.

Analog channel configuration

HSARSPTR has one analog group input which must be properly configured.
Table 1199: Analog signals
Input
I3P
See the preprocessing function blocks in this document for the
possible signal sources.
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings. For
troubleshooting, check the contents of this chapter and also the preprocessing blocks
in this document. The configuration can be written to the protection relay once the
mismatch is corrected.
Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "on" and "off".
The operation of HSARSPTR can be described with a module diagram. All modules
in the diagram are explained in the next sections.
Description
Three-phase currents
1MRS759142 C
REX640
Technical Manual