The Megger DLRO 600 Digital Micro-Ohmmeter is a versatile instrument capable of providing test currents from 10 amps up to 600 amps subject to the load resistance and supply voltage. A large liquid crystal display provides all the information needed to perform a test; all test parameters and measurement results are displayed.
Megger DLRO 600 Digital Micro-Ohmmeter specifications:
Range: 0.1 µΩ to 999.9 mΩ
(Subject to supply voltage and leads used)
Voltage ±0.5% ± 0.1 mV
Current ±0.5% ± 0.1 A
Resistance: Better than 1% from 100 µΩ to 100 mΩ
The chart above shows the maximum output current available at different supply voltages with a 4 mΩ load (i.e. standard 5 m current leads only) and with a 7 mΩ load
Current Lead Resistance (Megger supplied leads)
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 60 seconds at 600 A @ 20ºC ambient.
Power Supply for: See chart.
Full Output: 207 to 265 V 50/60 Hz with a load less than 7 mΩ including current leads
Reduced Output: Down to 100 V 50/60 Hz.
Test Modes: Manual, Auto, Continuous.
Test Time: 7 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: 200 characters max.
Test Current Range: 10 A to 600 A unsmoothed d.c. in 1 A steps
Accuracy: ±2% ±2 A
Voltmeter Input Impedance: >200 kΩ
Hum Rejection: 5 V rms 50 Hz/60 Hz
Temperature Operation: -10 to +50ºC
Storage: -25 to +65ºC
Co-efficient: <0.05% per ºC
Max. Humidity: 95% RH non-condensing
Maxi Altitude: 2000 m
Dimensions: 410 x 250 x 270 mm
Weight: 14.5 kg (excluding test leads)