IEC 60255-149:2013
Current
The latest, up-to-date edition.
Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English - French
30-07-2013
Important note : Users cannot be edited or removed once added to your Multi user PDF.
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Specification of the function
5 Performance specification
6 Functional test methodology
7 Documentation requirements
Annex A (informative) - Simple first-order thermal
model of electrical equipment
Annex B (informative) - Thermal electrical relays
which use temperature as setting parameters
Bibliography
IEC 60255-149:2013 specifies minimum requirements for thermal protection relays. This standard includes specification of the protection function, measurement characteristics and test methodologies. The object is to establish a common and reproducible reference for evaluating dependent time relays which protect equipment from thermal damage by measuring a.c. current flowing through the equipment. Complementary input energizing quantities such as ambient, coolant, top oil and winding temperature may be applicable for the thermal protection specification set forth in this standard. This standard covers protection relays based on a thermal model with memory function.
| DevelopmentNote |
Supersedes IEC 60255-8. (07/2013) Stability date: 2018. (09/2017)
|
| DocumentType |
Standard
|
| Pages |
93
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NEN EN IEC 60255-149 : 2013 | Identical |
| PN EN 60255-149 : 2014 | Identical |
| SAC GB/T 14598.149 : 2016 | Identical |
| VDE 0435-3149 : 2014 | Identical |
| IS/IEC 60255 : Part 149:2013 | Identical |
| UNE-EN 60255-149:2013 | Identical |
| BS EN 60255-149:2013 | Identical |
| CEI EN 60255-149 : 2014 | Identical |
| EN 60255-149:2013 | Identical |
| SN EN 60255-149:2013 | Identical |
| PNE-FprEN 60255-149 | Identical |
| IEEE 3004.8-2016 | IEEE Recommended Practice for Motor Protection in Industrial and Commercial Power Systems |
| PD IEC/TR 61869-100:2017 | Instrument transformers Guidance for application of current transformers in power system protection |
| IEC TR 61869-100:2017 | Instrument transformers - Part 100: Guidance for application of current transformers in power system protection |
| IEC 60947-4-1:2009+AMD1:2012 CSV | Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters |
| IEC 60085:2007 | Electrical insulation - Thermal evaluation and designation |
| IEC 61850-9-2:2011 | Communication networks and systems for power utility automation - Part 9-2: Specific communication service mapping (SCSM) - Sampled values over ISO/IEC 8802-3 |
| IEC 60947-4-2:2011 | Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters |
| IEC 60255-1:1967 | Electrical relays - Part 1: Instantaneous all-or-nothing relays |
| IEC 61850-7-4:2010 | Communication networks and systems for power utility automation - Part 7-4: Basic communication structure - Compatible logical node classes and data object classes |
| IEEE C37.96-2012 | IEEE Guide for AC Motor Protection |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.