Megger DCM305E - Earth leakage clampmeter

Specially designed to check earth leakage currents, the DCM305E is an efficient and highly versatile instrument. It 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.



Stock

Model: DCM305E

Producer: Megger

Country of origin: United Kingdoom

The DCM305E is perfect for identifying and measuring the earth leakage current in a circuit where the RCD keeps tripping out unexpectedly. The measured result will quickly identify whether the earth leakage current present is excessive, causing the RCD to trip, or if the RCD itself is over sensitive or faulty.

Request your quotation




Key features

0.001 mA resolution
Up to 100 A AC
TRMS reading
Low pass filter to aid stability of readings
Auto, data & peak hold
40 mm jaw


Description

The DCM305E is designed to check earth leakage currents; however the upper range enables TRMS AC current measurements of up to 100 A. TRMS meters can measure both pure, undistorted, sinusoidal AC waveforms and non-sinusoidal AC waveforms which can contain pulse trains, triangles, spikes and other ragged waves.The instrument 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.Either auto or manual ranging can be selected. Harmonics / electrical noise on the cables / circuit under test can give rise to incorrect readings so the DCM305E features a low pass filter (50/60 Hz) which vastly improves measurements on these particular circuits.A compare function is also featured which has 3 pre-set leakage limits (0.25, 0.50, 3.5 mA) which when selected offers a visual indication and audible warning when the pre-set limit is exceeded. For those hard to read measurements, where accessibility is a problem, auto hold and data hold features have been incorporated to aid measurements. A peak hold option is also featured on this instrument.An auto-backlight also aids easy viewing of the 6000 count display.The 40 mm jaw has been designed to allow measurements on both insulated and non-insulated conductors.Safety has been enhanced with inclusion of a tactile hand barrier / hand guard in the instrument case design.

To save battery life an automatic power off feature will switch the clamp off if no readings have been made during a 20 minute period.The instrument is pocket sized, light weight, rugged and easy to use, making it an ideal choice for the electrical industry.

APPLICATIONS

A typical application for the DCM305E would be a measurement of earth leakage current in a circuit where the RCD keeps tripping out unexpectedly.The measured result will quickly identify whether the earth leakage current present is excessive causing the RCD to trip or if the RCD itself is very sensitive / faulty. Earth leakage can be the result various undetected faults in the installation or a faulty appliance.Cable insulation deterioration, cable damage or the ingress of moisture into areas where exposed terminals are present may give rise to earth leakage current

 



SPECIFICATIONS
Display: 6000 count
Measuring function: TRMS Leakage current and load current
Ranges: 6.000 mA / 60.00 mA / 600.00 mA / 6.000 A / 60.00 A / 100.0 A
Basic accuracy: ± (1.0 % + 3d)
AC Current:
Range Resolution Accuracy
6 mA 0.001 mA 0 ~ 10 A±(1 % reading + 8 digits)
60 mA 0.01 mA
600 mA 0.1 mA 10 ~ 50 A±(2 % reading + 10 digits)
6 A 0.001 A 50 ~ 100 A±(10 % reading + 10 digits)
60 A 0.01 A
100 A 0.1 A
Frequency response (61 ~ 400 Hz):
0 ~ 10 A ± (2 % reading + 11 digits)
10 ~ 50 A ± (10 % reading + 11 digits)
50 ~ 100 A ± (35 % reading + 11 digits)
Low Pass Filter
Range Resolution Accuracy
6 mA 0.001 mA 0 ~ 10 A±(2 % reading + 8 digits)
60 mA 0.01 mA 10 ~ 50 A ± (3 % reading + 10 digits)
600 mA 0.1 mA
6 A 0.001 A
60 A 0.01 A 50 ~ 100A±(12 % reading + 10 digits)
100 A 0.1 A
Accuracy specified at operating temperature: 23° C ± 5° C <80% RH
Resolution 0.001 mA
Operating frequency range: 50 - 400 Hz
Sampling rate 5 times / second
Data, auto, peak hold: User Selectable
Low pass filter: 50 / 60 Hz
Low pass filter cut-off frequency: Approximately 100 Hz with an attenuation characteristic of approximately -24 dB / octave
Compare pre-set limits: 0.25, 0.50, 3.50 mA
Jaw size: 40 mm (750 mm conductor size)
Maximum jaw opening: 43 mm
Overload: "OL"
Auto power off: 20 minutes of inactivity
Operating temperature: 0 °C - 50 °C
Storage temperature: -20 °C - 60 °C
Operating Altitude ≤2000 m
Temperature coefficient: 0.2 x (Spec. Accuracy) / °C, <18 °C, >28 °C
Power Supply: 2 x 1.5 V alkaline AAA / LR03
Battery life 60 hours
Size 78 mm (W) x 203 mm (H) x 42 mm (D)
Weight: 300 g
Safety EN61010-1 CAT III 300 V
EMC: EN61326-1


Complete product details


More Information?

Contact us by filling out this form:



UE
Contact

We call you