Reaffirmed 2020

1. SCOPE

1.1 This standard specifies static watt-hour smart meters of accuracy class 1 and 2 for the measurement of alternating current electrical active energy of frequency 50 Hz for single phase and three phase balanced and unbalanced loads. It applies to their type tests, routine tests and acceptance tests.

1.2 It applies to:

a) static watt-hour direct connected meters consisting of measuring element(s), time of use of register(s), display, load switch and built in type bi-directional communication module all integral with the meter housing.

b) alternately the bi-directional communication module could be plug-in type on a dedicated slot with suitable sealing arrangement. The plug-in module shall be field swappable with suitable integrated communication module as agreed between buyer and seller.

1.3 The smart meter types as specified in 1.2 (a) and 1.2 (b) shall be suitable for indoor/outdoor usage and capable of forward (import) or both forward (import) and reverse (export) energy measurement.

1.4 It does not apply to:

a) watt-hour meters where the voltage across the connection terminal exceeds 600 V (line to line voltage for meters for poly phase systems,

b) meters operated with external current transformers,

c) portable meters, and

d) meters without internal load switch.

2. REFERENCES

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on thisstandard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.

13779 : 1999 a.c. Static watthour meters, Class 1 and 2 - Specification

15884 : 2010 Alternating current direct connected static prepayment meters for active energy (Class 1 and 2) - Specification

15959 (Part 1) : 2011 Data exchange for electricity meter reading, tariff and load control : Companion specification

15959 (Part 2) : 2011 Data exchange for electricity meter reading, tariff and load control: Part 2 Companion specification for smart meter

IEEE 802.15.4 : 2003 Standard for local and metropolitan area networks

IEEE 1901 : 2010 Standard for broadband over power line networks: Medium access control and physical layer specifications

IEEE 1901.2 : 2013 Standard for low-frequency narrow band power line communications for smart grid applications

ITU-T G.9901 : 2014 Narrowband orthogonal frequency division multiplexing power line communication transceivers - Power spectral density specification

ITU-T G.9903 : 2014 Narrowband orthogonal frequency division multiplexing power line communication transceivers for G3- PLC networks

ITU-T G.9904 : 2012 Narrowband orthogonal frequency division multiplexing power line communication transceivers for prime networks