BS 7856:2017 Code of practice for special design and other features of alternating current watthour meters for active energy (MID accuracy classes A and B) for use in the UK

BS 7856:2017

Specification for special design and other features of alternating current watthour meters for active energy for use in the UK (Accuracy Classes A and B)

Status : Current   Published : July 2017

Format
PDF

Format
HARDCOPY



What is this standard about?

It provides guidance on the design and testing of UK electricity meters, augmenting the requirements of BS EN 62052-31 in terms of product safety.

Who is this standard for? 

  • Electricity meter manufacturers
  • Suppliers 
  • Operators
  • Asset providers

Why should you use this standard? 

This revision introduces new safety requirements in line with recent publications and current safety guidelines.

What’s changed since the last update?

New safety requirements are introduced that relate to co-ordination with short circuit protection devices, i.e. the 100A fuse in most UK installations. This revision:

  • Amends the section(s) on a meter’s ability to sustain overload and short circuit conditions in line with modern service fusing practice
  • Ensures that meter overload and short circuit sustaining requirements align with current building practices
  • Ensures the need to meet MOCOPA requirements is recognized when providing sealing for meter terminal covers and communication ports
  • Relaxes metrological sealing requirements so that manufacturers can innovate without compromising basic security requirements
  • Incorporates further minor amendments and clarifications relating to meter dimensions



Standard NumberBS 7856:2017
TitleSpecification for special design and other features of alternating current watthour meters for active energy for use in the UK (Accuracy Classes A and B)
StatusCurrent
Publication Date24 July 2017
Normative References(Required to achieve compliance to this standard)IEC 60502-1:2004, BS EN 50470-1:2006, BS EN 50470-3:2006, BS EN 50470-2:2006, BS 6004:2012, BS EN 62052-11:2003+A1:2017, BS EN 60947-1:2007+A2:2014, BS EN 62052-31:2016
Informative References(Provided for Information)BS HD 60269-3, PD IEC/TR 60269-5:2010, BS 7671:2008+A3:2015, BS EN 60269-1:2007+A1:2009, BS HD 60269-2:2013, BS 3036:1958, BS 1361:1947, IEC 60364-4-43:2008
ReplacesBS 7856:2013
DescriptorsElectric current, Power measurement (electric), Dimensions, Single-phase current, Two-phase current, Electricity supply meters, Electrical measurement, Wattmeters, Electromechanical devices, Alternating current, Circuit diagrams, Design, Three-phase current
ICS17.220.20
CommitteePEL/13
ISBN978 0 580 95803 8
PublisherBSI
FormatA4
DeliveryYes
Pages34
File Size898 KB
Price£214.00


 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


Tracked Changes

Understand the changes made to a standard with our new Tracked Changes version


Worldwide Standards
We can source any standard from anywhere in the world


BSOL

The faster, easier way to work with standards