ABB REF542plus, Installation And Commissioning Manual

Page: 3 / 80

REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04 REF542 plus : Installation and Commissioning 3 / 80
Table of Contents
1 Introduction ..............................................................................................................6
2 Abbreviations and Definitions................................................................................7
2.1 Abbreviations .............................................................................................................7
2.2 Definitions ..................................................................................................................7
3 Operation of the REF542plus .................................................................................9
3.1 Operator's responsibilities .........................................................................................9
3.2 Guarantee Provisions ................................................................................................9
3.3 Safety Regulations...................................................................................................10
3.3.1 General safety notes .....................................................................10
3.3.2 Specific safety information ............................................................11
4 Mounting and Installation .....................................................................................12
4.1 Unpacking ................................................................................................................12
4.2 Mounting ..................................................................................................................12
4.2.1 Set-up Area and Required Environmental Conditions ..................14
4.2.2 Installation in LV panels ................................................................15
4.2.3 Connection diagrams ....................................................................16
4.2.4 Wiring the REF542 plus .................................................................20
4.2.4.1 Checking the current transformer circuits .....................................20
4.2.4.2 Check the voltage transformer circuits .........................................21
4.2.4.3 Checking the auxiliary voltage ......................................................21
4.2.4.4 Check the tripping and signaling contacts ....................................21
4.2.4.5 Check the binary inputs ................................................................21
4.2.5 Grounding of the REF542 plus ......................................................21
4.2.6 Typical examples of analog and binary connections ....................23
4.2.7 Connection Example of the REF542 plus Analog Inputs...............24
5 Commissioning ......................................................................................................34
5.1 Safety Information....................................................................................................34
5.2 Switching on the feeder ...........................................................................................34
5.3 Test Equipment........................................................................................................34
5.4 Testing the interlock conditions, ..............................................................................34
5.5 Determining the transformer direction .....................................................................35
5.5.1 Current transformer.......................................................................35
5.5.2 Voltage transformer ......................................................................36
5.5.3 Current sensor ..............................................................................36
5.5.4 Voltage sensor ..............................................................................37
5.6 Testing the measured value recording ....................................................................37
5.7 Testing the protective functions ...............................................................................38
6 Troubleshooting ....................................................................................................39