IEC 60255-1:2022 specifies common rules and requirements applicable to measuring relays and protection equipment, including any combination of equipment to form a distributed protection scheme for power system protection such as control, monitoring and process interface equipment, to obtain uniformity of requirements and tests. This document covers the main technologies in use today; other emerging technologies present specific EMC and safety issues but the philosophy in this document will be applied. This second edition cancels and replaces the first edition published in 2009. This edition includes the following significant technical changes with respect to the previous edition: a. scope of document clarified; b. merging units and communications as an integral part of the protection added; c. binary output clarification expanded; d. environmental operating conditions added (Annex B); e. test reference conditions added; f. multiple changes to improve understanding across most clauses; g. derating by manufacturer added; h. safety and EMC tests removed from document and referenced only; i. relay setting and type test guidelines modified (Annex A) j. battery monitor port and low power instrument transformers added.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Annex A (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Blank Page <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figures Figure 1 \u2013 Ports for measuring relays and protection equipment <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 3.2 Abbreviated terms 4 Environmental conditions 4.1 General <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 4.2 Normal environmental conditions 4.3 Special environmental conditions 4.4 Environmental storage conditions 4.5 Transport conditions 5 Ratings 5.1 General Tables Table 1 \u2013 Normal environmental conditions <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 5.2 Rated voltage 5.2.1 Input energizing voltage 5.2.2 Auxiliary power supply port energizing voltage 5.2.3 Rated insulation voltage 5.3 Rated current \u2013 Input energizing current 5.3.1 Primary relay 5.3.2 Secondary relay <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 5.4 Binary input and output port 5.4.1 Binary input port 5.4.2 Binary output port Table 2 \u2013 Contact performance requirements <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 5.5 Transducer analogue input and output port 5.5.1 Transducer analogue input port 5.5.2 Transducer analogue output port 5.6 Frequency 5.6.1 Rated frequency 5.6.2 Frequency operating range 5.7 Rated burden Figure 2 \u2013 Binary output parameters <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 5.8 Rated ambient temperature range 6 Design and construction 6.1 Marking 6.2 Dimensions 6.3 Enclosure protection 6.4 Product safety requirements 6.5 Functional performance requirements 6.5.1 General Table 3 \u2013 Hot and cold temperatures <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 6.5.2 Intrinsic accuracy <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 6.5.3 Operating accuracy 6.5.4 Performance under system conditions 6.5.5 Performance of multifunctional protection equipment 6.5.6 Internal user programmable logic 6.6 Communication protocols 6.7 Cybersecurity <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 6.8 Binary input and output port 6.8.1 Binary input port 6.8.2 Binary output port 6.9 Transducer analogue input and output port 6.9.1 Transducer analogue input port 6.9.2 Transducer analogue output port 6.10 Input circuit for measurement quantities 6.10.1 Analogue voltage port 6.10.2 Analogue current port <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 6.10.3 Communication port 6.11 Binary output performance (mechanical and static) 6.12 Climatic performance 6.12.1 General 6.12.2 Verification procedure <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 6.12.3 Climatic environmental tests Table 4 \u2013 Dry heat test \u2013 Operational <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Table 5 \u2013 Cold test \u2013 Operational Table 6 \u2013 Dry heat test, storage temperature <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Table 7 \u2013 Cold test, storage temperature Table 8 \u2013 Change of temperature test <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Table 9 \u2013 Damp heat steady state test Table 10 \u2013 Cyclic temperature with humidity test <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 6.13 Mechanical requirements 6.13.1 Vibration response and endurance (sinusoidal) 6.13.2 Shock response, shock withstand and bump 6.13.3 Seismic risk 6.14 Pollution 6.15 Electromagnetic compatibility (EMC) 7 Tests 7.1 Test reference conditions <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | 7.2 Test overview Table 11 \u2013 Test reference conditions <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Table 12 \u2013 Test overview <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | 7.3 Burden measurements 7.3.1 Burden for analogue voltage inputs 7.3.2 Burden for analogue current inputs 7.3.3 Burden for AC power supply 7.3.4 Burden for DC power supply <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | 7.3.5 Burden for binary input 7.4 Type test report content <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | 8 Marking, labelling and packaging 9 Product documentation and technical data <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Annex A (normative)Type testing guidelines A.1 General A.2 Protection setting A.2.1 Introductory remark A.2.2 Test philosophy <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | A.2.3 Overcurrent and undercurrent Figure A.1 \u2013 Settings selection criteria <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | A.2.4 Overvoltage and undervoltage <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | A.2.5 Over frequency and under frequency A.2.6 Functions set around current, voltage and frequency <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | A.2.7 Other functions <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | Annex B (informative)Environmental operating locations B.1 Operating environment B.2 Operating conditions Table B.1 \u2013 Operating locations <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Table B.2 \u2013 Climatic conditions Table B.3 \u2013 Mechanical conditions <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Table B.4 \u2013 EMC conditions Table B.5 \u2013 Chemically active substance conditions Table B.6 \u2013 Mechanically active substance conditions <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Table B.7 \u2013 Biological conditions <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Measuring relays and protection equipment – Common requirements<\/b><\/p>\n |