Emission Measurements

Many years ago all the loads connected to the a.c. supply lines were linear loads such as filament lamps, heaters or a.c. motors. Such loads draw sinusoidal currents from the a.c. supply and do not cause any special problems. Today an increasing proportion of the loads are non-linear-loads driving distorted current.

Distorted current can cause many undesirable effects on the a.c. power supply: reducing the effective power factor of a load, overheating of motors and filters etc. It may also cause electro-magnetic interferences with equipment connected to the power supply or placed in the vicinity of the supply.

Another low frequency emission disturbance source is the repetitive voltage variation of supplies. The bulbs of connected lamps start flickering equal the voltage variation and can disturb people.

To find the appropriate equipment for the emission measurements you are looking for please choose from the sub-menu above.