345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Table of Contents
Overview ............................................................................................................................ 1 - 1
Cautions and warnings ............................................................................................... 1 - 2
Description of the 345 Transformer Protection System .............................. 1 - 3
345 order codes.............................................................................................................. 1 - 7
Specifications................................................................................................................... 1 - 8
Password security................................................................................................................1 - 8
Protection.................................................................................................................................1 - 8
Metering....................................................................................................................................1 - 10
Data capture ..........................................................................................................................1 - 10
Controls.....................................................................................................................................1 - 11
Inputs/Outputs ......................................................................................................................1 - 11
Power supply..........................................................................................................................1 - 12
Communications ..................................................................................................................1 - 13
Testing and certification ...................................................................................................1 - 13
Dimensions..............................................................................................................................2 - 1
Product identification .........................................................................................................2 - 2
Mounting ..................................................................................................................................2 - 3
Unit withdrawal and insertion........................................................................................2 - 4
Terminal identification .......................................................................................................2 - 7
Phase sequence and transformer polarity...............................................................2 - 9
Current inputs ........................................................................................................................2 - 10
Ground and sensitive ground CT inputs ....................................................................2 - 10
Zero sequence CT installation ........................................................................................2 - 11
Control power ........................................................................................................................2 - 12
Contact inputs .......................................................................................................................2 - 12
Trip1 and Trip2 output relays..........................................................................................2 - 13
Serial communications......................................................................................................2 - 15
IRIG-B .........................................................................................................................................2 - 16
LED status indicators..........................................................................................................3 - 5
Relay messages ....................................................................................................................3 - 6
Target messages.................................................................................................................3 - 6
Self-test errors......................................................................................................................3 - 7
Flash messages...................................................................................................................3 - 8
Configuring serial communications...........................................................................3 - 13
Using the Quick Connect feature ................................................................................3 - 14
Configuring Ethernet communications ....................................................................3 - 15