ABB RET 541 - Page 4

RET 54_
1MRS755225
Issued: 20.01.2005
Version: E/26.10.2010
Transformer Terminal
Technical Reference Manual, General
©Copyright 2005 ABB Oy, Distribution Automation, VAASA, Finland 4
5.1.5.2. Low auxiliary voltage indication ..........................36
5.1.5.3. Overtemperature indication ................................37
5.1.6. Analog channels ..............................................................37
5.1.6.1. Scaling the rated values of the protected unit for
analog channels 39
5.1.6.2. Technical data of the measuring devices ...........39
5.1.6.3. Calculated analog channels ...............................41
5.1.7. Digital inputs ....................................................................41
5.1.7.1. Filter time of a digital input .................................43
5.1.7.2. Inversion of a digital input ..................................43
5.1.7.3. Pulse counters ...................................................44
5.1.7.4. Oscillation suppression ......................................44
5.1.7.5. Attributes of a digital input for transformer terminal
configuration 45
5.1.8. Digital outputs ..................................................................47
5.1.8.1. High-speed double-pole power outputs (HSPO) 48
5.1.8.2. Single-pole power outputs (PO) and a high-speed
single-pole power output (HSPO) 49
5.1.8.3. Double-pole power outputs (PO) ........................49
5.1.8.4. Signal outputs (SO) ............................................50
5.1.9. RTD/analog inputs ...........................................................51
5.1.9.1. Selection of input signal type .............................51
5.1.9.2. Selection of input signal range ...........................51
5.1.9.3. Transducer supervision ......................................53
5.1.9.4. Signal filtering .....................................................53
5.1.9.5. Input scaling/linearization ...................................53
5.1.9.6. Transducer connections .....................................56
5.1.9.7. Attributes of an RTD/analog input for transformer
terminal configuration 59
5.1.9.8. RTD/analog input configuration example ...........59
5.1.9.9. Self-supervision ..................................................60
5.1.9.10.Calibration ..........................................................60
5.1.9.11.RTD temperature vs. resistance ........................61
5.1.10.Analog outputs .................................................................62
5.1.10.1.Selection of analog output range .......................62
5.1.10.2.Attributes of an analog output for transformer
terminal configuration 62
5.1.10.3.Analog output configuration example................. 63
5.1.11.Trip circuit supervision .....................................................64
5.1.11.1.Configuring the trip circuit supervision CMTCS_ 66
5.1.12.Self-supervision (IRF) ......................................................66