Megger DLRO10 Digital Low Resistance Ohmmeter, 10 A, w/ DH4-C Duplex Lead
Our Part #20002076
Condition:New
Mfr Part #DLRO10
- Description
- Specifications
- Documents
Megger DLRO10 Digital Low Resistance Ohmmeter
The Megger DLRO10 Digital Low Resistance Ohmmeter is a portable, high-accuracy micro-ohmmeter designed for fast and reliable low resistance testing in electrical maintenance, manufacturing, utility, transportation, and industrial environments. Delivering test currents up to 10 A DC, the DLRO10 measures resistance from 0.1 μΩ to 2 kΩ (on one of seven ranges) using a true four-terminal Kelvin measurement method for highly accurate results. Automatic current reversal eliminates the effects of standing voltages and thermal EMFs, while its lightweight, rugged design makes it ideal for both field and laboratory use. The DLRO10 also provides multiple test modes to support resistance testing of switches, busbars, transformer windings, bonding connections, welds, and other critical low-resistance applications.
Specifications
- Measures resistance from 0.1 μΩ to 2 kΩ
- Test current up to 10 A DC
- Basic accuracy: +/-0.2%
- Four-terminal Kelvin measurement method
- Automatic forward and reverse current testing
- Typical measurement time: less than 3 seconds
- Multiple test modes: Manual, Auto, Continuous, and Inductive
- Protected against accidental external voltages up to 600 V
- Rechargeable 5.2 Ah lithium-ion battery
- Up to 1,300 tests at 10 A per charge
- IP54 operating protection, IP65 when case is closed
- Large, bright 4 1/2 digit LED display
- CAT III 600 V safety rating when used with appropriate test leads
- Real time download of results and on board storage for later download to a PC
Benefits
- High-Accuracy Results: Four-wire Kelvin testing removes lead resistance from measurements for precise readings.
- Faster Testing: Automatic current reversal and results displayed in under 3 seconds improve productivity.
- Portable Design: Lightweight, compact instrument suitable for field service and confined access locations.
- Enhanced Measurement Reliability: Automatic detection of poor current and potential connections helps prevent erroneous readings.
- Noise Rejection Technology: Identifies excessive electrical noise that could impact measurement accuracy.
- Long Battery Life: Perform up to 1,300 tests before recharging.
- Safe Operation: 600 V protection enhances safety when testing industrial electrical systems.
- Versatile Testing Modes: Supports routine, repetitive, and inductive load testing applications.
Applications
- Switch and contact breaker resistance
- Busbar and cable joints
- Aircraft frame bonds and static control circuits
- Integrity of welded joints
- Inter-cell connections on battery systems up to 600 V peak
- Quality control of resistive components
- Transformer and motor winding resistance
- Rail and pipe bonds
- Metal alloys, welds and fuse resistance
- Graphite electrodes and other composites
- Wire and cable resistance
- Transmitter aerial and lightning conductor bonding
Megger DLRO10 Frequently Asked Questions (FAQ)
What is the difference between the Megger DLRO10 and DLRO10X?
The DLRO10 provides fully automatic low resistance measurements with a bright LED display and multiple test modes. The DLRO10X includes additional features such as manual test current selection, onboard memory for up to 700 test results, pass/fail limits, alphanumeric test notes, a color display, and RS232 data download capabilities.
Can the Megger DLRO10 test transformer and motor windings?
Yes. The DLRO10 is commonly used for measuring low resistance values in transformer windings, motor windings, busbars, and other inductive components. Its dedicated Inductive Mode is specifically designed to obtain stable measurements on inductive loads while safely managing discharge currents.
How can I minimize the effects of standing EMFs when making low-resistance measurements across connections between dissimilar metals?
This problem can be overcome relatively easily by making a measurement, then reversing the polarity of the test leads and making a second measurement. The required resistance value is the arithmetic average of the measurements. Some instruments, such as those in the Megger DLRO10 range of digital low resistance ohmmeters, feature automatic current reversal so that the correct result is displayed without operator intervention, even if there is a standing EMF on the circuit under test.
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What's in the Box
- DLRO10 ohmmeter
- 5.2 lithium ion battery module (6121-492)
- (2) DH4-C Duplex handspikes (1006-444)
- Battery charger (6280-333)