• Megger

Megger® Model DLRO 100

Digital Low-Resistance Ohmmeter
dcm

Features

 
  • CAT IV 600 VAC/500 VDC up to 2000 m
  • CAT IV 300 V up to 4000 m
  • Available battery powered or line powered
  • High noise immunity
  • Smooth DC output
  • 100A manual, auto and continuous test
  • Custom test
  • Range & test mode rotary switches
  • Ultra tough outer case construction
  • Smooth DC output
  • IP54 Lid open/IP65 Lid closed
  • Large, clear LCD

Test modes:

 

The manual test mode allows the user to initiate the test procedure once the probes are in contact with the object under test. Once the TEST button is depressed the TEST lamp will illuminate and the instrument will undertake a single test to verify the resistance of the test object.

 

In auto mode the user selects the desired current, connects the current test leads and as soon as the potential leads are connected a test will start automatically. To repeat a test, simply break contact with the potential probes and remake contact.

 

In continuous mode the user connects the test leads and presses the TEST button, initiating the test procedure. The instrument will continue to test, updating the display after each new test cycle, until the TEST button is pressed or the test procedure times out.

Description

The new Megger DLRO100 series offers a unique range of 100 A digital low resistance testers. Never before has CATIV 600 V safety, operational IP54 ingress protection for dust and water, and lightweight, fast charge, Li-ion battery technology been available on a continuous 100 A low resistance tester.

Providing low resistance measurements across a multitude of applications, including areas without access to line power, the DLRO100 is extremely flexible. Applications include switchgear, circuit breaker contact resistance, bus bar and cable joints, wire and cable resistance, lightning conductor bonding, welded joints, ground connections and joints.

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Megger has taken a no compromise approach when designing the new DLRO100 series. The range offers a unique combination of features with everything including DualGround™ testing, adjustable current ramping, high noise immunity, high power 100 A continuous testing and even remote control, yet still manages to be small and lightweight.

There are three models in the series, all three models can be line powered, are rated CAT IV 600 V and can test currents from 10 to 110 A. B in the model name indicates the battery powered option (in addition to AC power).

 
  • Literature
 
pdf icon Description
++ DLRO100 Specification sheet (1.6 MB)

Ranges & Accuracy

Technical Features
AVO300 AVO310
AC Voltage 1000 V 1000 V
DC Voltage 1000 V 1000 V
AC Current 10 A 10 A
DC Current 10 A 10 A
Resistance 0.1 Ω to 40 MΩ 0.1 Ω to 40 MΩ
Diode Test
Fast continuity buzzer
Auto-ranging
Data-hold
Max/Min
-
Backlight
-
Tough Rubber Armoured
Auto power down
Battery Low Warning
Accuracy 1% 1%
Operating Temperature -10°C to +50°C -10°C to +50°C
Installation category 600V CATIII 600V CATIII
IEC 61010

Product Specifications

Resistance
Resolution
Accuracy
400.0 Ω 0.1 Ω +0.8% of rdg ±5 digits
4.000 kΩ 1 Ω +0.8% of rdg ±2 digits
40.00 kΩ 10 Ω
400.0 kΩ 100 Ω
4.000 MΩ 1 kΩ +3% of rdg ±8 digits
40.00 MΩ 10 kΩ
Input Protection: 1000 V d.c. or 1000 V a.c. rms.
DC Voltage (Auto-ranging)
Resolution
Accuracy
400.0 mV 0.1 mV +0.5% of rdg ±2 digits
4.000 V 1 mV +0.8% of rdg ±2 digits
40.00 V 10 mV
400.0 V 100 mV
600 V 1 V +1% of rdg ±2 digits
Input Impedance: 7.8MΩ.Maximum Input: 1000 V d.c.
AC Voltage (Auto-ranging)
Resolution
Accuracy
400.0 mV (AVO310 only) 0.1 mV +1% of rdg ±5 digits
4.000 V 1 mV
40.00 V 10 mV
400.0 V 100 mV
600 V 1 V +1.5% of rdg ±5 digits
Input Impedance: 7.8 MΩ.AC Response: 50Hz 60Hz Maximum Input: 1000 V rms
DC Current
Resolution
Accuracy
400.0 μA 0.1 μA +1.0% of rdg ±3 digits
4000 μA 1 μA
40.00 mA 10 μA
400.0 mA 100 μA
10 A 10 mA +2.5% of rdg ± 3 digits
Overload Protection: 0.5 A / 1000 V and 10 A / 1000 V Fuse.Maximum Input: 4000 μA dc on μA range 400 mA dc on mA range 10 A dc on 10 A range.
AC Current
Resolution
Accuracy
400.0 μA 0.1 μA +1.5% of rdg ±5 digits
4000 μA 1 μA
40.00 mA 10 μA
400.0 mA 100 μA
10 A 10 mA +3.0% of rdg ±5 digits
Overload Protection: 0.5 A / 1000 V and 10 A / 1000 V Fuse.AC Response: 50Hz to 400Hz Maximum Input: 4000 μA ac rms on μA 400 mA ac rms on mA 10 A ac rms on 10 A range.
Diode Test
Resolution
Accuracy
0.3mA typical/Open <1.5 V(AVO300) 1 mV +10% of rdg ±5 digits
Open circuit voltage: 1.5 V dc typicalOverload protection: 1000 V d.c. or 1000 a.c. V rms
1mA typical/ Open MAX.3 V(AVO310) 1 mV +10% of rdg ±5 digits
Open circuit voltage: MAX. 3 V dcOverload protection: 1000 V d.c. or 100 V a.c. rms