Megger DCM305E, Earth Leakage Clamp Meter

The Megger DCM305E is an earth leakage clamp meter with the following key highlights:

• - 0.001 mA resolution
• - Up to 100 A range for standard AC current measurements
• - TRMS reading
• - Low pass filter to aid stability of readings
• - Auto, data and peak hold
• - 40 mm jaw
• - Analogue bar graph display for trending

The DCM305E is used to identify and measure the earth leakage current in a circuit where the RCD keeps tripping out. The measurement reading allows you to identify whether the earth leakage current seen is excessive and therefore causing the RCD to trip, or if the RCD itself is either faulty or too sensitive.

Specially designed to check earth leakage currents, the DCM305E has six ranges 6 mA, 60 mA, 600 mA, 6 A, 60 A, 100 A with a minimum resolution of 0.001 mA on the 6 mA range. Its upper range also enables TRMS AC current measurements up to 100 A. Additionally, this clamp meter improves measurements on circuits with harmonics/electric noise on the cables by use of a 50/60 Hz low pass filter (LPF).

The DCM305E exceeds safety design standards IEC1010-2-32 and EMC requirements.

Other key features include Data Hold which is useful when trying to take measurements where it is hard to access or difficult to read the screen, and also a handy automatic power off after 20mins of inactivity to help save you chewing through batteries (it takes 2x AAA which will usually give around 60hrs use).