ABB REF542plus Manual

Multifunction Protection and Switchgear Control unit REF542plus
Manual: Motor Protection with ATEX-Certification
Table of Contents
1 Introduction ..........................................................................................................6
2 Abbreviations and Definitions............................................................................7
2.1 Abbreviations ....................................................................................................7
2.2 Definitions .........................................................................................................7
3 References:...........................................................................................................9
4 Motor protection functions ...............................................................................10
4.1 Supervision of a blocking rotor........................................................................11
4.1.1 Setting parameters .......................................................................11
4.1.2 Functional check...........................................................................11
4.2 Motor start protection ......................................................................................12
4.2.1 Setting parameters .......................................................................12
4.2.2 Tripping characteristic ..................................................................14
4.2.3 Functional check...........................................................................15
4.3 Number of starts protection.............................................................................15
4.3.1 Setting parameters .......................................................................16
4.3.2 Functional check...........................................................................17
4.4 Thermal overload protection ...........................................................................17
4.4.1 Setting parameters .......................................................................20
4.4.1.1 Setting the time constant:.............................................................21
4.4.1.2 Setting the temperature................................................................22
4.4.1.3 Setting the temperature after reset...............................................24
4.4.2 Tripping characteristic ..................................................................24
4.4.3 Functional check...........................................................................26
4.5 Unbalanced load protection ............................................................................27
4.5.1 Setting parameters .......................................................................28
4.5.1.1 Setting the current starting value..................................................28
4.5.1.2 Setting the tripping time................................................................28
4.5.2 Tripping characteristic ..................................................................29
4.5.3 Functional check...........................................................................31
5 Setting example..................................................................................................32
5.1 Rotor block protection.....................................................................................33
5.2 Motor start protection ......................................................................................33
5.3 Thermal overload protection ...........................................................................33
5.4 Number of starts protection.............................................................................34
5.5 Tripping characteristic.....................................................................................35
5.6 Behavior after recovering of the auxiliary voltage...........................................36
6 Operation of the REF542plus............................................................................38
6.1 Operator's responsibilities...............................................................................38
6.2 Guarantee Provisions......................................................................................38
1VTA100114-Rev. 04 en PTMV, 19.01.05 Motorprotection 3 / 66
Valid from Version V4D02

ABB REF542plus Specifications

General

Brand	ABB
Model	REF542plus
Category	Control Unit
Language	English