UL 61010-2-032:2020 PDF Download

UL 61010-2-032:2020 is a standard that specifies safety requirements for hand-held and hand-manipulated current sensors used for electrical test and measurement. These current sensors are used for measuring, detecting, or injecting current, as well as indicating current waveforms on circuits without physically opening the current path. They can be stand-alone sensors or accessories to other equipment.

The standard covers four types of current sensors:

a) Type A: These are current sensors designed to be applied to or removed from hazardous live uninsulated conductors. They have hand-held or hand-manipulated parts that provide protection against electric shock from the conductor being measured, as well as protection against short-circuits between wires and busbars during clamping.

b) Type B: These current sensors have protection against short-circuits between wires or busbars during clamping, but they do not have defined hand-held or hand-manipulated parts that provide protection against electric shock. Additional protective means are necessary to avoid electric shock from hazardous live conductors.

c) Type C: These current sensors do not have protection against short-circuits between wires or busbars during clamping. They are intended to be applied to or removed from hazardous live uninsulated conductors or non-limited-energy circuit conductors only when they are de-energized.

d) Type D: These current sensors are designed to be applied to or removed from insulated conductors or limited-energy circuit conductors.

The standard also includes additional requirements for clamp multimeters and provides graphical representations of typical current sensors for illustration purposes.