BS EN 61557-8:2015
Current
The latest, up-to-date edition.
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Insulation monitoring devices for IT systems
Hardcopy , PDF
English
30-06-2016
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1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Requirements
5 Marking and operating instructions
6 Tests
7 Overview of requirements and tests for IMDs
Annex A (normative) - Medical insulation monitoring devices
(MED-IMD)
Annex B (informative) - Monitoring of overload current and
over-temperature
Annex C (normative) - Insulation monitoring devices for photovoltaic
systems (PV-IMD)
Annex D (normative) - Insulation monitoring function of a photovoltaic
inverter (PV-IMF) or in a charge controller
Bibliography
Annex ZA (normative) - Normative references to
international publications with
their corresponding European publications
Defines the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance R[F] to earth of unearthed a.c. IT systems, of a.c. IT systems with galvanically connected d.c. circuits having nominal voltages up to 1000 V a.c., as well as of unearthed d.c. IT systems with voltages up to 1500 V d.c. independent from the method of measuring.
| Committee |
PEL/85
|
| DevelopmentNote |
Supersedes 95/200309 DC. (09/2005) Supersedes 04/30125208 DC. (11/2007) Supersedes 12/30274733 DC. (02/2015)
|
| DocumentType |
Standard
|
| Pages |
52
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of IEC61557 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance R F to earth of unearthed a.c. IT systems, of a.c. IT systems with galvanically connected d.c. circuits having nominal voltages up to 1000V a.c., as well as of unearthed d.c. IT systems with voltages up to 1500V d.c. independent from the method of measuring. IT systems are described in IEC60364‑4‑41 amongst other literature. Additional data for the selection of devices in other standards should be noted. NOTE Various standards specify the use of IMDs in IT systems. In such cases, the objective of the equipment is to signal a drop in insulation resistance R F below a minimum limit. IMDs according to this part of IEC61557 can also be used for de-energized TT, TN and IT systems or appliances.
| Standards | Relationship |
| DIN EN 61557-8 : 2015 COR 1 2016 | Identical |
| IEC 61557-8:2014 | Identical |
| NBN EN 61557-8 : 2015 COR 2016 | Identical |
| EN 61557-8:2015/AC:2016-06 | Identical |
| SN EN 61557-8 : 2007 | Identical |
| NF EN 61557-8 : 2015 | Identical |
| UNE-EN 61557-8:2016 | Identical |
| IEC 61557-8:2014/COR1:2016 | Identical |
| I.S. EN 61557-8:2015 | Identical |
| EN 61557-8:2015 | Equivalent |
| BS 7671(2008) : 2018 | REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - IET WIRING REGULATIONS |
| BS 7671(2008) : 2008 | REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - IET WIRING REGULATIONS |
| IEC 60947-5-4:2002 | Low-voltage switchgear and controlgear - Part 5-4: Control circuit devices and switching elements - Method of assessing the performance of low-energy contacts - Special tests |
| EN 60027-7:2010 | Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution |
| IEC 60364-7-712:2017 | Low voltage electrical installations - Part 7-712: Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems |
| EN 60721-3-1:1997 | Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 1: Storage |
| IEC 61326-2-4:2012 | Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9 |
| IEC 60364-7-710:2002 | Electrical installations of buildings - Part 7-710: Requirements for special installations or locations - Medical locations |
| IEC 60068-2-27:2008 | Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock |
| IEC 60364-4-41:2005+AMD1:2017 CSV | Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock |
| EN 60068-2-1:2007 | Environmental testing - Part 2-1: Tests - Test A: Cold |
| EN 60068-2-2:2007 | Environmental testing - Part 2-2: Tests - Test B: Dry heat |
| HD 60364-4-41:2017/A11:2017 | LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 4-41: PROTECTION FOR SAFETY - PROTECTION AGAINST ELECTRIC SHOCK |
| EN 60947-5-4:2003 | Low-voltage switchgear and controlgear - Part 5-4: Control circuit devices and switching elements - Method of assessing the performance of low-energy contacts - Special tests |
| EN 61810-2:2017 | Electromechanical elementary relays - Part 2: Reliability |
| IEC 61010-2-030:2017 | Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-030: Particular requirements for equipment having testing or measuring circuits |
| IEC 61557-1:2007 | Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements |
| IEC 61810-2:2017 | Electromechanical elementary relays - Part 2: Reliability |
| EN 60068-2-27:2009 | Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock |
| IEC 60691:2015 | Thermal-links - Requirements and application guide |
| IEC 60721-3-2:1997 | Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 2: Transportation |
| IEC 60068-2-2:2007 | Environmental testing - Part 2-2: Tests - Test B: Dry heat |
| EN 60664-1:2007 | Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests |
| HD 60364-7-712:2016 | Low-voltage electrical installations - Part 7-712: Requirements for special installations or locations - Photovoltaic (PV) systems |
| IEC 62109-2:2011 | Safety of power converters for use in photovoltaic power systems - Part 2: Particular requirements for inverters |
| EN 61557-1:2007 | Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements |
| HD 60364-7-710:2012/AC:2013 | LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 7-710: REQUIREMENTS FOR SPECIAL INSTALLATIONS OR LOCATIONS - MEDICAL LOCATIONS |
| EN 62109-2:2011 | Safety of power converters for use in photovoltaic power systems - Part 2: Particular requirements for inverters |
| IEC 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV | Classification of environmental conditions - Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations |
| EN 60068-2-6:2008 | Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal) |
| IEC 60664-3:2016 | Insulation coordination for equipment within low-voltage systems - Part 3: Use of coating, potting or moulding for protection against pollution |
| CISPR 11:2015 RLV | Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement |
| EN 61140:2016 | Protection against electric shock - Common aspects for installation and equipment |
| IEC 61557-9:2014 | Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems |
| IEC 60068-2-1:2007 | Environmental testing - Part 2-1: Tests - Test A: Cold |
| EN 61010-1:2010 | Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements |
| EN 60721-3-2:1997 | Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 2: Transportation |
| IEC 61140:2016 | Protection against electric shock - Common aspects for installation and equipment |
| IEC 61010-1:2010+AMD1:2016 CSV | Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements |
| EN 61326-2-4:2013 | Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9 |
| IEC 60664-1:2007 | Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests |
| IEC 60027-7:2010 | Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution |
| EN 61557-9:2015/AC:2017-02 | ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V A.C. AND 1500 V D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 9: EQUIPMENT FOR INSULATION FAULT LOCATION IN IT SYSTEMS (IEC 61557-9:2014/COR2:2017) |
| EN 60664-3:2017 | Insulation coordination for equipment within low-voltage systems - Part 3: Use of coating, potting or moulding for protection against pollution |
| IEC 60721-3-1:1997 | Classification of environmental conditions - Part 3 Classification of groups of environmental parameters and their severities - Section 1: Storage |
| EN 60721-3-3 : 95 AMD 2 97 | CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STATIONARY USE AT WEATHER-PROTECTED LOCATIONS |
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