Revised Standard from Last Update.

1. Scope

1.1 This Standard specify the main characteristics of the voltage at network user’s supply terminals in distribution system.

1.2 The characteristics of the supply voltage considered by this standard are:

a) Frequency;

b) Magnitude;

c) Waveform; and

d) Symmetry of the line voltages.

1.3 This Standard applies only under normal operating conditions and in the case of compliance of a network user’s installation or equipment with:

a) The relevant standards;

b) The technical requirements for connection, established by the distribution licensee; and

c) The limits for the emission of conducted disturbances.

2. References

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

IS No./ Other Publication Title

IS 12360 : 1988 Voltage bands for electrical installations including preferred voltages and frequency

EN 50160 : 2010 Voltage characteristics of electricity supplied by publicdistribution systems

IEC 61000-2-2 : 2002 Electromagnetic compatibility (EMC) - Part 2-2: Environment -Compatibility levels for low-frequency conducted disturbances and signaling in public low-voltage power supply systems

IEC 61000-2-8 : 2002 Electromagnetic compatibility (EMC) - Part 2-8: Environment - Voltage dips and short interruptions on public electric power supply systems with statistical measurement results

IEC 61000-4-30 : 2015 Electromagnetic compatibility (EMC) - Part 4-30: Testing and measurement techniques- Power quality measurement methods