Megger DLRO 100XB Electrical Low Resistance Digital OhmMeter

Megger DLRO 100XB Electrical Low Resistance Ohmmeters

A significant addition to the comprehensive range of Megger Low Resistance Ohmmeters, DLRO100 enables low resistance measurement, across multiple applications, in areas without access to mains power. The integral Li-Ion battery supplies a constant 100 A current for up to 200 Manual/Auto tests to enable enhanced productivity in remote locations. With a focus on user safety, advanced design features ensure the safe operation of the instrument in the most adverse conditions, including a CAT IV 600 VAC / 500 VDC safety rating in accordance with IEC61010. The rugged design, intuitive interface and IP54 (lid open) rating ensure reliability and ease of use in the most arduous of conditions.

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.

History of ‘Ducter’ testing

For over 100 years the ‘Ducter test’ has been used to describe a simple test for measuring very low contact resistances and “Ducter”, which is still used as a trade mark, was the name originally given to the low resistance ohmmeter manufactured by Megger. The name Ducter was registered by Megger in June 1908 and ‘Ducter’ has since become the industry standard.

APPLICATION

The need for accurate low resistance measurement is well known and very diverse. Typical applications include:

Utilities & Service Contractors – commissioning new installations & regular maintenance testing of

• Switchgear and circuit breaker contact resistance
• Busbar and cable joints
• Wire and cable resistance
• Lightning conductor bonding

Original Equipment Manufacturer – detecting manufacturing defects

• Production test of circuit breakers – contacts & joints
• Production test of high voltage switchgear
• Production test of welded joints & connections

Transport – manufacturing & maintenance

• Railway rolling stock ground connections & manufactured joints
• Railway lines & conductor rails – commissioning & maintenance
• Aircraft frame bonds and static control circuits

Features:

• CAT IV 600 VAC / 500 VDC for safe operation
• Lightweight 100 A battery powered unit for portability
• High noise immunity for stable readings
• Smooth DC Output for circuit breaker testing
• IP54 for protection against dust and moisture whilst testing
• Remote operation, Bluetooth® & asset/result tagging (100H variants)

FEATURES AND BENIFITS

Specifications:

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