The DCM300E Earth Leakage Clamp designed
primarily to check earth leakage currents with a dedicated 30 mA range
providing resolution down to 10 µA. The capabilities of the DCM300E
extend to measuring currents of up to 300 A ac, making it a highly
versatile instrument capable of taking current measurements in a wide
variety of situations and applications.
A typical application for the DCM300E would be the measurement of earth
leakage current in a circuit where the GFCI repeatedly trips out. The
measured result will quickly identify whether an excessive leakage
current is causing the GFCI to trip, or if the GFCI itself is faulty.
The DCM300E has 4 ranges: 30 mA, 300 mA, 30 A and 300 A with a best
resolution of 0.01 mA. The analog-style bargraph of the DCM300E is very
useful when monitoring changes, allowing the operator to easily
interpret the rapidly changing bargraph rather than the digital
display. Other key functions include the "Data Hold" feature which aids
in measurements where there is a problem with accessibility or poor
lighting, and the automatic power off feature that extends the battery
life.
This clampmeter was also designed with safety in mind and exceeds the
latest safety design standards IEC1010-2-32 and EMC requirements. Extra
safety features have been designed into the DCM300E to provide a safer
working environment for the user.