Control Circuits

Control Circuits Control  Control components are used in a wide variety of applications with varying degrees of complexity. One example of a simple control circuit is a circuit that turns a light on and off. In this circuit, the control component is often a single-pole switch.  ...

Electrical Panel

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Pollution Degree

The level of pollution in the environment in which the Assembly is intended to be installed. Four categories are defined in the Standard as follows:   Pollution degree 1 : No pollution or only dry, non-conductive pollution occurs. Pollution degree 2 : Normally, only non-conductive pollution occurs. Occasionally, however, a temporary                             ...

ROUTINE TESTS

These tests have a totally different function to Type Tests, BS EN 60439-1, states:   ‘Routine tests are intended to detect faults in materials and workmanship. They are carried out on every ASSEMBLY after its assembly or on each transport unit. Another routine test at the place of installation is not required.’   Hence, Routine Tests on Assemblies are normally undertaken...