IEC protection classes for power supplies

Posted on 05 Nov 2018

Power supplies fall into one of three protection classes based on the need, or not, for a protective earth connection:

Class I   - where user protection from electric shock is achieved through a combination of insulation and a protective ground. Class II  - where user protection from electric shock is achieved through two levels of insulation (either double or reinforced). Class III - where the input is connected to a safety extra low voltage (SELV) circuit meaning no further protection is required.


Energy efficiency for external power supplies (EPS)

Posted on 03 Oct 2017
Controlling the power consumed by external power supplies, whether when they are supplying power or when disconnected from the load, is important for continuity of the energy supply and reduction of environmental impacts. Legislation and targets are set for external power supplies because of proliferation, lack of on/off control and because they are commonly left plugged into the mains supply when not in use.
0 1091 27 -1 Blog