DLRO100 Series Megger Digital Low Resistance Ohmmeters DLRO100 Series Megger Digital Low Resistance Ohmmeters n CAT IV 600 VAC / 500 VDC for safe operation n Lightweight 100 A battery powered unit for portability n High noise immunity for stable readings n Smooth DC Output for circuit breaker testing n IP54 for protection against dust and moisture while testing n Save, download and delete results (100X/H variants) n Remote operation, Bluetooth & asset/result tagging (100H variants) DESCRIPTION History of Ducter testing A significant addition to the comprehensive range of Megger For over 100 years the Ducter test has been used to describe Low Resistance Ohmmeters, DLRO100 enables low resistance a simple test for measuring very low contact resistances and measurement, across multiple applications, in areas without Ducter, which is still used as a trade mark, was the name access to AC power. The integral Li-Ion battery supplies a originally given to the low resistance ohmmeter manufactured by constant 100 A current for up to 200 manual/auto tests to enable Megger. The name Ducter was registered by Megger in June 1908 enhanced productivity in remote locations. With a focus on user and Ducter has since become the industry standard. safety, advanced design features ensure the safe operation of the instrument in the most adverse conditions, including a APPLICATION CAT IV 600 VAC / 500 VDC safety rating in accordance with The need for accurate low resistance measurement is well known IEC61010. The rugged design, intuitive interface and IP54 (lid and very diverse. Typical applications include: open) rating ensure reliability and ease of use in the most arduous of conditions. Utilities & Service Contractors commissioning new installations & regular maintenance testing of Test Modes n Switchgear and circuit breaker contact resistance The manual test mode allows the user to initiate the test n Busbar and cable joints procedure once the probes are in contact with the object under test. Once the TEST button is depressed the TEST lamp will n Wire and cable resistance illuminate and the instrument will undertake a single test to verify n Lightning conductor bonding the resistance of the test object. In auto mode the user selects the desired current, connects Original Equipment Manufacturer detecting the current test leads and as soon as the potential leads are manufacturing defects connected a test will start automatically. To repeat a test, simply n Production test of circuit breakers contacts & joints break contact with the potential probes and remake contact. n Production test of high voltage switchgear In continuous mode the user connects the test leads and presses n Production test of welded joints & connections 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. Transport manufacturing & maintenance n Railway rolling stock ground connections & manufactured joints n Railway lines & conductor rails commissioning & maintenance n Aircraft frame bonds and static control circuitsDLRO100 Series Megger Digital Low Resistance Ohmmeters SPECIFICATIONS MARKET SEGMENTS Versatility is a key feature is the DLRO100 and makes it suitable Measurement range 0.1 - 1.999 for the following market segments: Resolution 0.1 Power Utilities Noise rejection Differential 100 mV 50-60 n Power stations Hz on Test Leads n Distribution (cable) DC output Smooth DC n HV substations and switchyards IP rating IP54 Lid open / IP65 Lid closed n Wind turbines Operating temperature -20C up to 50C n Solar range Service Companies Storage temperature range -30C up to 70C n Electrical power utilities Humidity <85% R.H. non-condensing n Commercial (3 phase) Battery life 200 single 100 A tests or up n Industrial (up to 11 kV) to 2x 10 minutes continuous 100 A output n Wind turbines Battery type User replaceable Li-ion battery n Solar pack OEMs Battery charge time Full charge in 2.5 Hrs from dead n Power equipment Maximum output voltage 2 V (battery), 3 V (AC) n Automotive EMC IEC61326-1 Plants n Chemical Safety IEC61010 CAT IV 600 VAC / 500 VDC n Refineries up to 2000 m n Miscellaneous CAT IV 300 V up to 4000 m Transportation Dimensions 400 x 300 x 200 mm n Airplane maintenance n Airport maintenance Weight 7.0 kg (AC Only) 7.9 kg (with Battery) n Port n Ship Accuracy Current Resistance Accuracy Setting Range 50 - 110 A 0 - 100.00 m Typical (0.2% + 0.2 ) Max. (0.2% + 0.8 )* 11 - 49 A 10 - 100.00 m Typical (0.2% + 0.5 ) Max. (0.2% + 2.0 )* 10 A 10 - 1000.0 m Typical (0.2% + 1.0 ) Max. (0.2% + 2.5 )* Actual test current may be limited by maximum output voltage * k = 4 Operational uncertanity, 85% RH, -20C to +50C Current setting Resistance range + 50 - 110 A 0 - 100.00 m (0.0% + 0.0 ) 11 - 49 A 10 - 100.00 m (0.0% + 1.0 ) 10 A 10 - 1000.0 m (0.1% + 2.0 )