BS EN 61439 Implementation

BS EN 61439 StandardImplementation of the harmonised standard

BS EN 61439 Implementation.pptx Version 1.3 April 2016

Low-voltage switchgear and

controlgear assemblies

Neil Williams EngTech MIET

Technical Manager

Elsteel UK & IRL

This presentation reflects the views and interpretations of Elsteel UK Ltd

It is recommended that where reference to standards is required, these are purchased from NSAI, IEC or BSI as applicable

Presentation to;

Name

Location


1. Key Questions

2. Focus On Compliance

4. Elsteel Technical Support

Introduction

6. Reference Information


3. Compliance Summary

5. Questions \ Answers

Introduction

Elsteel Global Operations

• Family owned business (Denmark)

• Manufacturing facilities in;

> Poland

> Sri Lanka

> India

+ More in planning

Resources in over 40

Countries

Ongoing IEC 61439 Test

Programme

Innovative Manufacturing

Techniques

Ongoing R&D Programme


Introduction

Elsteel UK & IRL Operations

• Production facilities in;

> Wrexham

> Belfast

> Dublin

Estimation

Engineering

Manufacturing

Technical Support


Key Questions

What is the BS EN 61439 Standard?

A technical standard comprising a series of parts

“

“Evolution:

• 1973 IEC 60439 was first published

• 1993 European Union and ‘EN’ versions - BS EN 60439-1

• 1999 IEC agree to work on a new version further to ambiguity with TTA & PTTA offerings

• 2009 The first edition of Part 1 &2 published - IEC 61439-1&2

• 2011 BS EN 61439-1&2 published, harmonised with EU directives (LVD + EMC)


Key Questions


Background:

• Relationship between BSI and IEC


Key Questions


Background:

• Alignment with

EU Directives

& The ‘EN’ Version



Legislation:

• Low-voltage Directive - 2014/35/EU (>April 2016)

Applies to electrical equipment designed for use with a voltage rating between

50 and 1000Volts for alternative current and 75 and 1500Volts for direct current

• Electro-magnetic Compatibility Directive 2014/30/EU (>April 2016)

Applies to equipment with an electrical aspect, primarily to prevent interference

With other electrical equipment and its own immunity from such disturbance

• The Electrical Equipment (Safety) Regulations 1994 (UK)Implements the Low-voltage Directive

Requires electrical equipment to be safe in its intended use

Enforced by The Health and Safety Executive (HSE)

Demonstrate compliance with relevant part of BS EN 61439 Series

• The Electricity at Work Regulations 1989 (UK)Requires manufacturers of electrical equipment are responsible for their use

All systems shall at all times be constructed to prevent danger

No equipment allowed to be put into use if its strength and capability gives rise to danger

Key Questions


Key Questions


Structure: (Aligned with ’60’ and ‘61’ prefix IEC Technical standards)

• 1 Part published by

IEC TR 61439-0 Guidance for specifiers

• 7 Parts published by

(Basic part)

BS EN 61439-1 General rules

(Relevant parts)

BS EN 61439-2 Power Switchgear and Controlgear assemblies

BS EN 61439-3 Distribution boards (<250A)

BS EN 61439-4 Assemblies for construction sites

BS EN 61439-5 Assemblies for Power Dist. in public networks

BS EN 61439-6 Busbar trunking systems (Busways)

IEC/TS 61436-7 Assemblies for specific applications


Key Questions


Normative references:

Examples

• IEC 60529 – Degrees of protection provided by enclosures (IP Code)

• IEC 62208 – Empty enclosures for low-voltage switchgear and controlgear assemblies – General requirements

• IEC TR 60890 – A method of temperature-rise verification of low-voltage switchgear and controlgear assemblies by

calculation

• IEC 60865-1 – Short-circuit currents – Calculation of effects. Definitions and calculation methods

• IEC TR 61641 – Enclosed low-voltage switchgear and controlgear – Guide for testing under conditions of arcing due

to internal fault

• IEC 60947-1 – Low-voltage switchgear and controlgear. Part 1 General rules


Key Questions


Basic parts of a

low-voltage assembly:

Enclosure


Key Questions


Principles:

Construction of an assembly• Strength of materials and parts

• Degree of protection of enclosure

• Protection against electric shock

• Clearance and creepage distances

• Incorporation of switching devices and components

• Internal electrical circuits and connections

• Cooling

• Terminals for external conductors

• Mechanical operation

Performance of an assembly• Dielectric properties

• Temperature-rise limits

• Short-circuit withstand strength

• Electro-magnetic compatibility


How is compliance achieved?

Verification & Documentation:

Design Verification• Verifying the construction and performance

(Twelve Characteristics - I.S. EN 61439-1 Table D.1)

Routine Verification• Checking the applicable design verifications for the assembly

• Verifying workmanship, functionality of every built assembly

Technical Documentation• Declaration of interface characteristics

• Instructions for handling, installation, operation and maintenance

• Device and component identification

Key Questions


Key Questions

Who is responsible for compliance?

Indirectly:

• Specifier (e.g. Principal Designer e.g. Design Consultant)

• Client (e.g. End-user\Duty Holder)

Directly:

• Original Manufacturer (e.g. Elsteel, Panel builder for any bespoke design not verified by test)

“ Organisation that has carried out the original design and the associated verification of an assembly in

accordance with the relevant assembly standard” [BS EN 61439-1 Clause 3.10.1]

• Assembly Manufacturer (e.g. Panel builder of the completed assembly)

“ Organisation taking responsibility for the completed assembly” [BS EN 61439-1 Clause 3.10.2]


Focus On Compliance

Stakeholder relationships and compliance process cycle

Example: New construction project

Brief

A new building requires as part of the electrical scope a switchboard to distribute power

and control circuits for lighting, mains power, heating and ventilation, fire alarm and

security of the premises.

…i.e. requires a “Power Switchgear and Controlgear assembly” – BS EN 61439-2


Focus On Compliance



1. Principal Designer + Client (End-user)

• Outline of scope discussed

… maximum demand conditions

… number of circuits

… space for switchboard

… spare future capacity

• Particular specification generated and agreed referring

IEC TR 60890-0 (Guidance for specifiers)

… Earthing system – TN-C-S

… Operational voltage – 415V

… Transient over-voltage – 8kV

… SCPD in the incoming unit – Yes

… Prospective short-circuit current – 50kA

… Location - Indoors


Focus On Compliance



2. Principal Contractor + Manufacturer

• Tender documents prepared and sent for quotation

… Offer based on Particular Specification (IEC TR 61439-0)

… Technical requirements checked against proposed solutions

… Design verified solution selected (e.g. Elsteel Techno Module System)

… Interface characteristic values declared (Clause 5 BS EN 61439-2)

… Particular items discussed and agreed (EUA – Annex BB BS EN 61439-2)

• Quotation accepted and order placed

… Particular items accepted (EUA – BS EN 61439-2 Annex BB)


Focus On Compliance



3. Manufacturer

• Detailed designs produced and new design verifications

… Reference design verifications checked against new design

(Clause 10 I.S. EN 61439-2)


Focus On Compliance



3. Manufacturer

• Detailed designs produced and new design verifications

… New design verifications (where required) carried

out and documented

(Table D.1 Options BS EN 61439-2)

… Design verification assessments carried out and

documented

(Clauses 10.6, 10.7, 10.8, 10.12 BS EN 61439-2)


Focus On Compliance



3. Manufacturer

• Routine verification on completed assembly

… Routine verification requirements carried out and

documented

(Clause 11 – BS EN 61439-2)

• Documentation and conformity assessment

… Declared interface characteristics

… Device and component identification

… Handling, transportation & installation

… Operation & maintenance

(Clause 6 – BS EN 61439-2)


Focus On Compliance



4. Manufacturer + Principal Contractor (or representative)

• Factory acceptance testing

… Check against IEC TR 61439-0 and End-user agreement

… Demonstration of all design verifications

… Demonstration of all routine verifications

… Demonstration of conformity assessment (DoC)

… Provision of documentation (O&M Manual)


Focus On Compliance



5. Principal Contractor + Client (End-user)

• Delivery and site acceptance testing

… Dielectric and continuity tests

… Installation in accordance with national regulations

(BS 7671 Requirements for Electrical Installations)

… Commissioning and handover

6. Duty Holder (Responsible Person)

… Ensure parameters not exceeded for normal operations (e.g. maximum loading, RDF)

… Ensure safe system of work in place for any maintenance or modifications

… Maintenance of the assembly (e.g. replacement of devices and components)

… Safely manage modification of the assembly (e.g. physical extension and additional circuits)

(BS 6423 – Code of practice for maintenance of low-voltage switchgear and controlgear)


Compliance Summary


Operate & Maintain

AM Information &

BS 6423

Modification

AM Warranty & BS 6423

Specification

IEC TR 61439-0 Annex C

User agreement

BS EN 61439-2 Annex BB

Design Consultant\Client

Design Verifications

BS EN 61439-1 Table D.1

(By test):

‘Original Manufacturer’

User agreement

BS EN 61439-2 Annex BB

Routine VerificationsBS EN 61439-2 Clause 11

Information

BS EN 61439-2 Clause 6

‘Assembly Manufacturer’

Designer\Manufacturer (Completed PSC Assembly)

Duty HolderPrincipal Designer

Responsible Person

Stakeholder responsibility

Elsteel recognise their position as an Original Manufacturer, responsible for certain

Design Verifications as BS EN 61439-1 Table D.1

To assist, internal processes and procedures have been updated and a Verification System developed based on

the requirements of I.S. EN 61439-2, for both Original & Assembly Manufacturer’s

Techno Module DVS

Developed to allow reference to all ongoing

tested reference designs in order to provide an

analysis of Design Verification for customers

bespoke designs.

This system allows quick identification and advice

For any new Design Verifications, and where possible,

provision of technical support. Complemented with an

integrated Routine Verification system, the aim is to

assist our customers to demonstrate full compliance

with the harmonised standard.

Elsteel Technical Support


Calculations & Technical Reports:

Based on BS EN 61439-2 Clause 10 and specific criteria and design rules, technical assessments for

bespoke designs can be performed, using built-in programming functions (focused on Temperature-rise

limits and Short-circuit withstand strength).

Technical Assessment Reports and Declaration of Conformity documents provides customers with the

necessary documentation to support their conformity requirements.

- Verification comparison software for temperature-rise limits



Techno Module RVS

Routine Verification is required to be undertaken by

Assembly Manufacturers for every production

assembly. Based on the requirements of EN 61439-2

Clauses 6 & 11, the system provides a procedural

framework which Assembly Manufacturers can refer

to, effectively ensuring that all necessary Design

Verifications are available for the production assembly.

In addition, workmanship and performance capability

of each assembly is checked and output

documentation provides a clear demonstration to third

parties that compliance has been achieved, necessary

for the Assembly Manufacturer’s EC Declaration of

Conformity and application of the CE Mark.



Contact Details:



Please feel free to ask any questions…

Thank you for time

Questions \ Answers


British Standards Institute• Technical Committee PEL/121/2http://standardsdevelopment.bsigroup.com/Home/Committee/50002505

British Electro-technical and Allied Manufacturers Association• Guide to Verificationhttp://www.beama.org.uk/en/publications/technical-guides.cfm/Verification

European Commission• Harmonised standardshttp://ec.europa.eu/enterprise/policies/european-standards/harmonised-standards/index_en.htm

European Committee for Electro-technical Standardisation• Technical Committee CLC/SR 121B http://www.cenelec.eu/dyn/www/f?p=104:7:1117193566772201::::FSP_ORG_ID,FSP_LANG_ID:1929960,25

International Electro-technical Committee• Technical Committee SC121Bhttp://www.iec.ch/dyn/www/f?p=103:23:0::::FSP_ORG_ID,FSP_LANG_ID:10619,25

The Health and Safety Executive• Manufacture and supply of new work equipmenthttp://www.hse.gov.uk/work-equipment-machinery/manufacturer-supply-new-work-equipment.htm

Reference Information


Documents

BS EN 61439 Implementation