Standards and directives

Standards and directives

Surge protection regulations

They describe the recognized state-of-the-art technology and its implementation. This applies to both the manufacture and use of protective devices.

Here you will find an overview of important standards and specifications for surge protection.

General standards for lightning protection, installation specifications, and product selection of surge protective devices

The various standards explain the requirements for installation and safety as well as the use of products in various applications in detail. The main individual topic areas are listed below. Click on the links to view the names of the corresponding international standards.

 


Protection against lightning Part 1: General principles
EN 62305-1
IEC 62305-1 and VDE 0185-305-1


Protection against lightning Part 2: Risk management
EN 62305-2
IEC 62305-2 and VDE 0185-305-2


Protection against lightning Part 3: Physical damage to structure and life hazard
EN 62305-3
IEC 62305-3 and VDE 0185-305-3



Protection against lightning – Part 3: Physical damage to structures and life hazard –
Supplement 5: Lightning and overvoltage protection for photovoltaic power supply
systems, DIN EN 62305 Supplement 5 (VDE 0185-305-3 Supplement 5)


Protection against lightning Part 4: Electrical and electronic systems within structures
EN 62305-4
IEC 62305-4 and VDE 0185-305-4


Low-voltage surge protective devices – Part 12: Surge protective devices connected to low voltage power systems – Selection and application principles
CLC/TS 61643-12/IEC 61643-12
DIN CLC/TS 61643-12 (VDE V 0675-6-12) “IEC modified”


Low-voltage surge protective devices – Part 22: Surge protective devices connected to telecommunications and signaling networks – Selection and application principles
CLC/TS 61643-22/IEC 61643-22/DIN CLC/TS 61643-22 (VDE V 0845-3-2)


Low-voltage surge protective devices – Surge protective devices for specific application including d.c. – Part 12: Selection and application principles – SPDs connected to photovoltaic installations.
CLC/TS 50539-12


Low-voltage surge protective devices – Surge protective devices for specific application including d.c. – Part 22: Selection and application principles – Wind turbine application.
CLC/TS 50539-22


Low-voltage d.c. surge protective device for traction systems – Selection and application rules for surge arresters.
CLC/TS 50544


Wind turbines – Part 24: Lightning protection
EN 61400-24/IEC 61400-24/DIN EN 61400-24 (VDE 0127-24)

In some countries, in particular the USA, China, Norway, and France, additional national specifications must be observed. France is currently very progressive in the field of photovoltaics.

Erection of power installations with nominal voltages up to 1000 V
DIN VDE 0100/IEC 60364


Electrical installations of buildings – Part 5-53: Selection and erection of electrical equipment – Isolation, switching, and control – clause 534: Devices for protection against overvoltages
DIN VDE 0100-534 (VDE 0100-534)/IEC 60364-5-53 Part 534

Low-voltage electrical installations – Part 4-44: Protection for safety – Protection against voltage disturbances and electromagnetic disturbances – Clause 443: Protection against overvoltages of atmospheric origin or due to switching
DIN VDE 0100-443/IEC 60364-4-44 Clause 443

Low-voltage electrical installations – Part 5-54: Selection and erection of electrical equipment – Earthing arrangements, protective conductors and protective bonding conductors
DIN VDE 0100-540/IEC 60364-5-54 Clause 540

Low-voltage electrical installations – Part 4-41: Protection for safety – Protection against electric shock
DIN VDE 0100-410/IEC 60364-4-41 Clause 410


Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests
EN 60664-1/IEC 60664-1/DIN EN 60664-1 (VDE 0110-1)


Electrical installations of buildings – Part 7-712: Requirements for special installations or locations – Solar photovoltaic (PV) power supply systems
DIN VDE 0100-712/IEC 60364-7-712


Low-voltage surge protective devices – Part 11: Surge protective devices connected to low-voltage power systems – Requirements and tests
EN 61643-11 + A11/IEC 61643-1*/DIN EN 61643-11 (VDE 0675-6-11)* New: IEC 61643-11:2011


Low-voltage surge protective devices – Part 21: Surge protective devices connected to telecommunications and signaling networks – Performance requirements and testing methods
EN 61643-21/IEC 61643-21/DIN EN 61643-21 (VDE 0845-3-1)

Surge protective devices
UL 1449 3rd Edition


Low-voltage surge protective devices – Surge protective devices for specific application including d.c. – Part 11: Requirements and tests for SPDs in photovoltaic installations.
prEN 50539-11

Classification of surge protective devices

Surge protective devices are items of equipment whose key components are varistors, suppressor diodes or spark gaps. Surge protective devices are used to protect other electrical equipment and electrical systems against impermissibly high surge voltages and to create equipotential bonding.

Surge protective devices are grouped according to their application and protective function:

  • Surge protective devices for use in low-voltage systems with a nominal voltage of up to 1000 V. The national installation specifications for low-voltage systems must be observed for product selection and installation, such as IEC 60634-5-53 Part 534 and VDE 0100 Part 534. The product standard is EN (IEC) 61643-11. According to this standard the devices are split into 3 arrester categories:

    Type 1: lightning current arresters for the effects caused by direct or close-up strikes designed to protect the installation and equipment at the interfaces between lightning protection zones LPZ 0 and 1 (incoming supply). Type 1 arresters are always recommended if the building has an external lightning protection system.

    Type 2: surge protective devices for the effects caused by remote strikes, inductive or capacitive coupling, and switching surge voltages designed to protect the installation, equipment, and terminal devices at the interfaces between lightning protection zones LPZ 1 and 2 (main distribution and sub-distribution).

    Type 3: additional surge protective devices designed to protect particularly sensitive terminal devices in lightning protection zone 1 or 2, in order to further reduce the voltage level. These may include devices for permanent installation in distributions or portable protective devices in the socket area directly upstream of the terminal device that is to be protected.

    General information can be found in the IEC 61643-12 Application Guide. The four parts of EN (IEC) 62305-…/VDE 0185-305-… cover the basics of lightning protection, the lightning protection zone concept, and risk analysis.
  • Surge protective devices for use in AC voltage networks with a nominal voltage of up to 200 kV. The product standard is EN (IEC) 60099 Parts 1 - 5. Applications primarily in medium and high-voltage systems. Part 5 describes the rules for product selection.
  • Surge protective devices for use in telecommunications and signaling networks designed to protect against the indirect and direct effects of lightning strikes and other transient overvoltages. These also include low-voltage data systems, measurement and control circuits, and voice transmission networks with nominal voltages up to 1000 V AC and 1500 V DC.

    The product standard is EN 61643-21  VDE 0845 Part 3-1. According to this standard the devices are split into categories A1, A2, B1, B2, B3, C1, C2, C3, and D1, D2 in order to define the test requirements and performance classes. A protective device can be marked and tested for various categories and performances classes.

    General information can be found in the IEC (TS) 61643-22 Application Guide. Parts of VDE 0800… and VDE 0845… provide additional information. Additional national specifications must be observed.


Passive filter units for electromagnetic interference suppression – Part 1: Generic specification.
EN 60939-1/IEC 60939-1/DIN EN 60939-1 (VDE 0565-3)


Passive filter units for electromagnetic interference suppression – Part 2: Sectional specification: Passive filter units for which safety tests are appropriate – Test methods and general requirements
EN 60939-2/IEC 60939-2/DIN EN 60939-2 (VDE 0565-3-1)


Fixed inductors for electromagnetic interference suppression – Part 2: Sectional specification
EN 60938-2/IEC 60938-2/DIN EN 60938-2 (VDE 0565-2-1)


Fixed capacitors for use in electronic equipment – Part 14: Sectional specification – Fixed capacitors for electromagnetic interference suppression and connected to the supply mains
EN 60384-14/IEC 60384-14/DIN EN 60384-14 (VDE 0565-1-1)

Electromagnetic interference filters
UL 1283


Information technology equipment – Safety – Part 1: General requirements
EN 60950-1/IEC 60950-1/DIN EN 60950-1 (VDE 0805-1); UL 60950-1


Low-voltage switchgear and controlgear – Part 7-1: Ancillary equipment – Terminal blocks for copper conductors
EN 60947-7-1/IEC 60947-7-1/DIN EN 60947-7-1 (VDE 0611-1)


Connecting devices – Electrical copper conductors; Safety requirements for screw-type and screwless-type clamping units – Part 1: General requirements and particular requirements for clamping units for conductors 0.2 mm2 up to 35 mm2 (included)
EN 60999-1/IEC 60999-1/DIN EN 60999-1 (VDE 0609-1)


Connecting devices – Electrical copper conductors; Safety requirements for screw-type and screwless-type clamping units – Part 2: General requirements and particular requirements for clamping units for conductors 35 mm2 up to 300 mm2 (included)
EN 60999-2/IEC 60999-2/DIN EN 60999-2 (VDE 0609-101)


Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) – Part 1: General rules.
EN 61008-1/IEC 61008-1/DIN EN 61008-1 (VDE 0664-10)


Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) – Part 1: General rules.
EN 61009-1/IEC 61009-1/DIN EN 61009-1 (VDE 0664-20)


Circuit-breakers for overcurrent protection for household and similar installations – Part 1: Circuit-breakers for a.c. operation
EN 60898-1/IEC 60898-1/DIN EN 60898-1 (VDE 0641-11)


Circuit-breakers for overcurrent protection for household and similar installations – Part 2: Circuit-breakers for a.c. and d.c. operation.
EN 60898-2/IEC 60898-2/DIN EN 60898-2 (VDE 0641-12)


Low-voltage switchgear and controlgear – Part 2: Circuit breakers
EN 60947-2/IEC 60947-2/DIN EN 60947-2 (VDE 0660-101)


Degrees of protection provided by enclosures (IP code)
EN 60529/IEC 60529/DIN EN 60529 (VDE 0470-1)


Low-voltage switchgear and controlgear assemblies – Part 1: General rules
EN 61439-1/IEC 61439-1/DIN EN 61439-1 (VDE 0660-600-1)


Low-voltage switchgear and controlgear assemblies – Part 2: Power switchgear and controlgear assemblies
EN 61439-2/IEC 61439-2/DIN EN 61439-2 (VDE 0660-600-2)


Explosive atmospheres – Part 0: Equipment – General requirements
EN 60079-0/IEC 60079-0/DIN EN 60079-0 (VDE 0170-1)


Explosive atmospheres – Part 1: Equipment protection by flameproof enclosure “d”
EN 60079-1/IEC 60079-1/DIN EN 60079-1 (VDE 0170-5)


Explosive atmospheres – Part 7: Equipment protection by increased safety “e”
EN 60079-7/IEC 60079-7/DIN EN 60079-7 (VDE 0170-6)


Explosive atmospheres – Part 11: Equipment protection by intrinsic safety “i”
EN 60079-11/IEC 60079-11/DIN EN 60079-11 (VDE 0170-7)


Electrical accessories – Residual current monitors for household and similar uses (RCMs)
EN 62020/IEC 62020/DIN EN 62020 (VDE 0663)


Instrument transformers – Part 1: Current transformers
EN 60044-1/IEC 60044-1/DIN EN 60044-1 (VDE 0414-44-1)


Uninterruptible power systems (UPS) – Part 1: General and safety requirements for UPS
EN 62040-1/IEC 62040-1


Uninterruptible power systems (UPS) – Part 2: Electromagnetic compatibility (EMC) requirements
EN 62040-2/IEC 62040-2/DIN EN 62040-2 (VDE 0558-520)


Uninterruptible power systems (UPS) – Part 3: Methods of specifying the performance and test requirements
EN 62040-3/IEC 62040-3/DIN EN 62040-3 (VDE 0558-530)

EMC directives

Noise emission and noise immunity are the main assessment parameters for EMC. Here you will find a list of the key standards for this area.

Emission for:
Residential environments: DIN EN 61000-6-3, EN 61000-6-3, IEC 61000-6-3
Industrial environments: DIN EN 61000-6-4, EN 61000-6-4, IEC 61000-6-4

Immunity for:
Residential environments: DIN EN 61000-6-1, EN 61000-6-1, IEC 61000-6-1
Industrial environments: DIN EN 61000-6-2, EN 61000-6-2, IEC 61000-6-2


Harmonic current emissions
DIN EN 61000-3-2, EN 61000-3-2, IEC 61000-3-2


Voltage fluctuations and flicker
DIN EN 61000-3-3, EN 61000-3-3, IEC 61000-3-3


Electrostatic discharge immunity test (ESD)
DIN EN 61000-4-2, EN 61000-4-2, IEC 61000-4-2


Radio frequency, electromagnetic field immunity test (EM)
DIN EN 61000-4-3, EN 61000-4-3, IEC 61000-4-3


Surge immunity test
DIN EN 61000-4-5, EN 61000-4-5, IEC 61000-4-5


Immunity to conducted disturbances, induced by radio-frequency fields (HF)
DIN EN 61000-4-6, EN 61000-4-6, IEC 61000-4-6


Power frequency magnetic field immunity test
DIN EN 61000-4-8, EN 61000-4-8, IEC 61000-4-8


Voltage dips, short interruptions and voltage variations immunity test
DIN EN 61000-4-11, EN 61000-4-11, IEC 61000-4-11

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