WG 4 - TC 47/SC 47E/WG 4

IEC 60747-5-5:2020 specifies the terminology, essential ratings, characteristics, safety tests, as well as the measuring methods for photocouplers.
Note: The term "optocoupler" can also be used instead of "photocoupler".
This edition includes the following significant technical changes with respect to the previous edition:
a) optional data sheet basic insulation rating in accordance with IEC 60664-1:2007, 6.1.3.5;
b) editorial corrections on the use of VIORM;
c) editorial corrections on Figure 2: Time intervals for method b);
d) addition of an alternative surge pulse VIOSM test method.

This part of IEC 60747 gives the terminology, essential ratings, characteristics, safety test as well as the measuring method for photocouplers (or optocouplers). NOTE The word "optocoupler" can also be used instead of "photocoupler". This standard replaces the clauses for photocouplers (or optocouplers) described in IEC 60747-5-1, IEC 60747-5-2 and IEC 60747-5-3, including their amendments. The contents for phototransistors and photothyristors in IEC 60747-5-1, IEC 60747-5-2 and IEC 60747-5-3, including their amendments, will be considered obsolete as of the effective date of publication of this standard. NOTE Photocouplers that are certified to the previous version of the photocoupler standard, namely IEC 60747-5-1/2/3, are to be considered in compliance with the requirements and provisions of IEC 60747-5-5.

IEC/PAS 60747-17:2011(E) gives the terminology, essential ratings, characteristics, safety test and the measuring methods of magnetic and capacitive couplers. It specifies the principles of magnetic and capacitive coupling across an isolation barrier and the related requirements for basic isolation and reinforced insulation.