Home > Standards > IEC Standards > IEC 61000-3-12: Limits for harmonic currents produced by equipment connected to public low-voltage s

# IEC 61000-3-12: Limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤ 75 A per phase

Yokogawa WT3000 Precision Power Analyzer |

CA Instruments MX90 Power Source and Compliance Test System |

- Nominal voltage up to 240 V, single-phase, two or three wires;
- Nominal voltage up to 690 V, three-phase, three or four wires;
- Nominal frequency 50 Hz or 60 Hz.

This standard defines:

a) Requirements and emission limits for equipment;

b) Methods for type tests and simulations.

b) Methods for type tests and simulations.

Tests according to this International Standard are type tests of complete pieces of equipment. Conformity with this standard can also be determined by validated simulations. This second edition cancels and replaces the first edition published in 2004 and constitutes a technical revision. The significant technical changes with respect to the previous edition are:

- The replacement of the reference fundamental current I1 by the reference current Iref for the calculation of emission limits;
- A new added table of current emission limits (Table 5);
- A new added annex (Annex A) to define test conditions for some types of equipment;
- Deletion of the former Annexes B (Approximate interpolation formulas) and D (Information on the PWHD factor).