Megger DLRO200 Low Resistance Ohmmeter

Description

Whether you're testing circuit breaker contacts, switch contacts, busbar joints or simply measuring components for correct operation, the Megger DLRO200 is capable of carrying out comprehensive evaluation of low resistance levels.

Featuring three different measurement modes, the DLRO200 can be used to carry out continuous testing over a time period, conventional testing of single resistance levels and can carry out testing automatically with ramping current that adjusts as necessary to a conductor. Al tests are carried out using a four-terminal method, ensuring that the resistance of test leads is filtered out and the overall accuracy of a test is maintained.

Depending on the supply voltage used and the leads used the measurement range of the DLRO200 is from 0.1μΩ up to 999.9mΩ. Test current used varies from 10A up to a total of 200A and all results are shown on a built-in LCD screen on the top of the tester.

As well as comprehensive measurement functions Megger's DLRO200 also includes the ability to catalogue and interact with testing data. The tester allows storage of up to 300 individual test records on the device and it is possible to directly download this data into a PC or alternatively straight to a printer. An alpha-numeric keypad on the tester also allows the entry of notes associated with the stored information and allows adjustments to be made to values.

Megger DLRO200 Low Resistance Ohmmeter Key Features

Measure insulation resistance from 0.1μΩ up to 999.9mΩ
Variable test current from 10A to 200A
LCD screen and alpha-numerical keypad
300 record memory with download
3 measurement modes: Continuous, Normal and Auto
High resolution and accuracy
RS232 communication

Full List of Products Included

Megger DLRO200 Low Resistance Ohmmeter
5m (16.4Ft) Lead Set Comprising 2 x 50mm Current Leads with Clips and 2 Potential Leads with Clips
Download Manager
User Guide on CD-ROM
RS232 Download Cable
Quick Start Guide in English and French

Tech Specs

Megger DLRO200 Technical Specifications

Measurement Range	0.1 μΩ to 999.9 mΩ (Subject to supply voltage and leads used)
Accuracy	Voltage ±0.5% ± 0.1 mV Current ±0.5% ± 0.1 A Resistance: Better than 1% from 300 μΩ to 100 mΩ Better than ±2% from 100 μΩ to 300 μΩ
Current Lead Resistance (Megger Leads)	2 x 5 m 25 mm2 current leads 8 m 2 x 5 m 50 mm2 current leads 4 mΩ 2 x 10 m 70 mm2 current leads 5.4 mΩ 2 x 15 m 95 mm2 current leads 6 mΩ
Maximum Continuous Test Time	More than 10 minutes at 200 A @ 20 ºC ambient.
Power Supply for DLRO200 for full output (unsmoothed DC)	100 to 265 V 50/60 Hz with a load less than 19 mΩ (supply >207 V rms), or 11 mΩ (115 V rms) including current leads
Power Supply for DLRO200-115V for full output (additional smoothing)	100 to 130 V 50/60 Hz with a load less than 11 mΩ including current leads
Test Modes	Manual, Auto, Continuous.
Test Time	10 seconds NORMAL /AUTO mode. Refreshed every 2 seconds in CONTINUOUS mode
Display	Large, high resolution backlit liquid crystal display
Warnings	Current flowing: - LED. Other warnings are shown on the lcd display
Data Transfer	Real time or batch download via RS232 using Download Manager.
Storage Capacity	300 result sets and memo, battery backed for 10 years.
Memo Field	160 characters max.
Test Current Range	10 A to 200 A d.c.
Accuracy	±2% ±2 A
Voltmeter Input Impedance	>200 kΩ
Hum Rejection	5 V rms 50 Hz/60 Hz
Temperature Operation	-10 to +50 ºC (-14 to +122 ºF)
Storage	-25 to +65 ºC (-13 to 149 ºF)
Calibration	20 ºC
Co-Efficient	<0.05% per ºC
Max Humidity	95% RH non-condensing
Max Altitude	2000m
Safety	IEC 61010-1
EMC	IEC61326-1
Dimensions	410 x 250 x 270 mm (16.4 x 9.84 x 10.63 ins)
Weight	14.5 kg (excluding test leads) (31.97 lbs)