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Megger DLRO10 10A Low Resistance Ohmmeter
  • Megger DLRO10 10A Low Resistance Ohmmeter
  • Megger DLRO10 10A Low Resistance Ohmmeter
  • Megger DLRO10 10A Low Resistance Ohmmeter
  • Megger DLRO10 10A Ductor

Megger DLRO10 10A Ductor - No DH4 Leads

Megger approved distributor and service centre.

Includes: DLRO10 User guide and Megger Certificate of Test.

Tax excluded
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NB. This product is supplied WITHOUT the Megger DH4-C leads.

The Megger DLRO10 10A is a low resistance ohmmeters that measure resistances in the range from 0.1 μΩ to 2 kΩ. The DLRO10 provides a maximum test current of 10 Amps d.c. which is automatically selected according to the value of resistance being tested.

The measured value of resistance is output to the instrument display with indication of the units, μΩ, mΩ or Ω. The DLRO10 uses a large LED display and indicators to display the value and units respectively.

The use of a four terminal measurement technique removes the test lead resistance from the measured value and auto current reversal eliminates the effect of standing voltages across the test sample. Additionally, before and during a test, test lead contact is monitored to further reduce the chance of erroneous readings

Although the DLRO10 and DLRO10X are not designed as transformer ohmmeters the DLRO10 is fitted with a DISCHARGE lamp, marked ‘I’, which indicates that current is flowing in the C1-C2 loop. This lamp will flash at end of a test on an inductive load while a discharge current is still flowing and will stop flashing when the current has decayed to less than 1mA.

The Megger DLRO10 is powered by a rechargeable Nickel Metal Hydride (NiMH) battery, which permits one thousand 10 Amp tests to be completed on a single charge. The battery module contains intelligent circuitry, which prevents damage to the battery from overcharging, and a battery state indicator. A removable lid that is hinged at the back and held closed by magnetic catches covers the top panel. This lid may be removed if required by opening fully and snapping out of its hinges.


Accurate results in approx. 2.5 seconds.
Auto current reversal cancels standing emfs.
Fuse protected to 600 V.
Lightweight NiMH battery.
250 mW power limit (with optional override) to avoid heating the test sample.
Test Current Indicators.
Noise in excess of 100 mV 50/60 Hz will light the ‘Noise’ lamp.
'C' and 'P' Indicator lamp illuminates to indicate contact failure.
'V' and 'I Warning Indicators if external voltage is applied to the terminals.
Adjustable brightness control.

Video Insight Into The Megger DLRO 10A Testers.

Functionality Table
Resistance Ranges Full Scale Volts Test Current
Full Scale Resolution Accuracy* Resistive Inductive Resistive Inductive
1.9999 mΩ 0.1 μΩ ±0.2% ±0.2μΩ 20 mV n/a 10 A n/a
19.999 mΩ 1 μΩ ±0.2% ±2 μΩ 20 mV 20 mV 1 A 1 A
199.99 mΩ 10 μΩ ±0.2% ±20 μΩ 20 mV 200 mV 100 mA 1 A
1.9999 Ω 100μΩ ±0.2% ±0.2 mΩ 20 mV 200 mV 10 mA 100 mA
19.999 Ω 1 mΩ ±0.2% ±2 mΩ 20 mV 200 mV 1 mA 10 mA
199.99 Ω 10 mΩ ±0.2% ±20 mΩ 20 mV 200 mV 100 μA 1 mA
1999.9 Ω 100 mΩ ±0.2% ±0.2 Ω 200 mV 200 mV 100 μA 100 μA
Megger DLRO10 Specifications
Mode Manual, Auto, Continuous, Inductive.
Control Fully Automatic.
Speed <3s for forward & reverse current and to display average.
Display Measurement: 4 1/2 digit seven segment LED.
Range & Safety LED indication.
Test method Single cycle reversing d.c. ratiometric measurement -average result display.
Test current accuracy ±10%.
Test current stability <10 ppm per second.
Lead resistance Maximum 100 mΩ total for 10 A operation irrespective of battery condition.
Voltmeter Input Impedance > 200 kΩ.
Noise rejection Less than 1% ±20 digits additional error with 100 mV peak 50/60 Hz. on the potential leads. Warning will show if hum or noise exceeds this level.
Battery Capacity 7 Ah NiMH rechargeable.
Battery Life Typical 1000 x 10A Tests Before Recharge.
Recharge Via external 90 V - 260 V 50/60 Hz charger or from 12 to 15 V dc supply.
Standard Charging Rate 2.5 hours to 90% capacity, 4 hrs for full charge.
Temperature +5 ºC to +45 ºC (41 ºF to 113 ºF) at full specification
-10 ºC to +50 ºC (14 ºF to 122 ºF) at reduced accuracy.
Storage Co-Efficient -30 ºC to +70 ºC (-22 ºF to 158 ºF).
Slow Charging <0.01% per ºC over range 5 ºC to 40 ºC (<0.006% per ºF from 4 1ºF to 104 ºF).
Humidity (MAX) +10 ºC to +45 ºC (50 ºF to 113 ºF).
Altitude (MAX) 90% RH @ 40 ºC (104 ºF) non-condensing.
Safety 2000 m (6562 ft) to full safety specifications.
EMC IP65 case closed,
IP54 battery operation.
Dimensions 220 x 100 x 237 mm (8.6 x 4 x 9.5 in).
Weight 2.6 kg (5 3/4 lb.) including battery module.
Megger DLRO10 warranty 2 year, conditional upon registering.


Megger DLRO10 & 10X Datasheet

PDF Specifications of the Megger DLRO10 & DLRO10X Low Resistance Ohmmeters.

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