Megger · Circuit breaker testing
Megger DLRO 600A Micro-Ohmmeter
$185 per day ex GST, 1 to 7 days
Per day, AUD ex GST. The rate for your total hire length applies to every day, and the total never drops at a band change. Minimum hire one day. Australia-only hire; freight and handling quoted separately. Hiring for more than 90 days? Call for a long-term rate: 1300 730 499
Work out your hire
Pick your first and last day to see the hire charge.
| 7 days | $1,295 |
|---|---|
| 14 days | $2,331 |
| 28 days | $3,885 |
| 60 days | $6,993 |
- Delivery or collection
- Freight Australia-wide, quoted with availability, or collect from Hobart, Launceston, Adelaide or Newcastle. Urgent? Call 1300 730 499 rather than send the form.
- Datasheet
- Manufacturer's datasheet (PDF). Calibration certificate supplied with the instrument.
Overview
About the Megger DLRO 600A Micro-Ohmmeter
Description
The DLRO 600A is a high‑current micro‑ohmmeter engineered for measuring extremely low resistances under real high‑current conditions. With test currents up to 600 A DC, it is ideal for testing critical high‑current connections such as circuit‑breaker contacts, busbar joints, switchgear connectors, transformer windings and large welded conductors. Despite its powerful output, the unit remains compact and portable, making it field‑ready for substations and industrial environments.
This model features selectable test currents from 10 A up to 600 A, and it measures resistance in the micro‑ohm range down to approximately 0.1 µΩ. It uses a four‑terminal (Kelvin) measurement technique to eliminate test‑lead resistance error, ensuring excellent accuracy even at very low resistances.
Typical applications include verifying contact resistance of high‑voltage circuit breakers, performing busbar joint testing, assessing welded connections in large conductors and conducting bonding or earthing system checks in industrial installations.
Features
- Test currents from 10 A to 600 A DC in 1 A steps (full output subject to supply voltage and load)
- Measurement range 0.1 µΩ to 999.9 mΩ (resolution depends on test current and leads)
- Four‑terminal (Kelvin) measurement method to cancel lead resistance
- On‑board memory for up to 300 test results with alphanumeric notes
- RS232 interface for real-time output or data download
- Rugged portable design (14.5 kg without leads) for field use
- Manual, Auto and Continuous test modes for flexibility
- Large back‑lit display with intuitive menu navigation
- Supplied with heavy‑duty current/potential leads and carry case
- Ideal for field or substation use where high‑current verification is required
Specifications
| Test current | 10 to 600 A DC (unsmoothed), 1 A steps |
|---|---|
| Measurement range | 0.1 µΩ to 999.9 mΩ |
| Resistance accuracy | Better than 1 % from 100 µΩ to 100 mΩ |
| Test modes | Manual, Auto, Continuous |
| Maximum continuous test time | More than 60 s at 600 A (20 °C ambient) |
| Power supply | 207 to 265 V, 50 or 60 Hz for full output (reduced output down to 100 V) |
| Data | 300 stored results, RS232 download |
| Operating temperature | -10 to 50 °C |
| Size and weight | 410 x 250 x 270 mm, 14.5 kg excluding test leads |
Manufacturer's published specifications. Your quote confirms the configuration supplied.
What’s in the case
- DLRO 600A main unit
- High-current test leads and Kelvin clamps
- Power cable
- RS232 download cable
- Quick-start guide
- Carry case
Calibration
All Megavar test equipment is maintained under a documented calibration programme. Instruments are calibrated either by external calibration laboratories or in-house against reference standards that are themselves laboratory-calibrated, with measurement traceable to Australian national measurement standards held by the National Measurement Institute. A current calibration certificate is available on request. If your project requires a specific calibration interval, test standard, or documentation for a client submission, tell us at enquiry on 1300 730 499 and we will confirm what applies before you commit.
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Why hire from Megavar
A Tailored Hire Experience That Works for You
At Megavar, our dedicated test equipment hire division provides high-quality electrical testing instruments for both short and long-term use. Our team makes sure you receive the right tools, ready to go, every time. From fast dispatch to door-to-door freight, our hiring process is streamlined to get you up and running quickly and confidently.
- Rapid delivery and collectionDoor-to-door freight for minimal downtime
- Fast, simple bookingsPlace an order and we’ll handle the rest
- Fault supportIf a set plays up, call us and we will arrange a fix or a replacement.
Our 3-step easy process
Hiring Made Easy in 3 Simple Steps
Step 1: Request a Quote
Submit your rental request online, and our team will respond promptly with availability and pricing.
Step 2: Organise Your Rental
Once confirmed, we’ll quickly process your booking and dispatch the equipment. Delivery and collection can be arranged to suit your schedule.
Step 3: Use with Confidence
Supplied with the manufacturer’s manuals. If a set plays up, call us and we will arrange a fix or a replacement.
How the hire works
Hire terms in brief
After you enquire
We confirm availability, rates and freight in a written quote, valid for the period it states (usually 14 days). An enquiry or quote does not reserve equipment: the hire is booked when your purchase order, signed quote or email acceptance reaches us.
Hire period
Our carrier: up to 72 hours of transit each way is not charged as hire. Hire starts at delivery or 72 hours after dispatch, whichever is earlier, and ends at handover to our carrier or 72 hours before the equipment arrives back, whichever is later. Delay caused by us or our carrier is not charged. For example, dispatched Monday 10am and delivered Wednesday 2pm: hire starts Wednesday 2pm. Routes that normally take longer than 72 hours are marked on the quote. Your own freight: hire runs from handover to your carrier at our office until the equipment arrives back at our office. Collect in person: from collection to return.
Extensions and early return
Contact us before the return deadline to extend; your quoted rates stay fixed and extended hire is invoiced every 7 days. Return early and you pay only for the days used, at the rate band for the days actually hired.
Delivery and returns
Freight for each leg, the handling fee and any express dispatch are on the quote, before you accept. Returns go to the dispatching office named on the quote, by carrier or in person, never by post.
Counter times
Returned to our counter before 9am on a business day counts as the previous day. Collected after 4pm on a business day, hire starts the next day. Weekends and public holidays count as hire days.
Calibration and checks
Supplied in working order with listed accessories, leads and manuals. Each measuring instrument is calibrated, and its current NATA-traceable calibration certificate is available on request. If calibration falls due during your hire, we tell you before dispatch.
Cancelling or moving a booking
Cancel 5 or more business days before dispatch or collection and nothing is charged. With 2 to 4 business days’ notice, the charge is the greater of one day’s hire and 5% of the booked hire; with less notice, the greater of one day’s hire and 10%. You can ask once to move the start by up to 30 days, with at least 2 business days’ notice.
Loss, damage and insurance
The equipment is your responsibility, other than fair wear and tear, from the start of hire until it is back with us, including in transit, up to the replacement value cap shown on the quote for each item. No damage waiver is offered. We recommend you insure the equipment for its replacement value.
Payment and bond
Account customers pay each invoice within 14 days. Without a credit account, or paying by card, you pay the booked hire, freight, handling fee and any bond before dispatch. A bond applies only where the quote states one, and is refunded after return and inspection, less anything owed.
Summary of our Terms and Conditions: Test Equipment Hire. Full hire terms
Enquire about Megger DLRO 600A Micro-Ohmmeter Hire
When and where do you need it?
Send your hire dates and delivery location and we will confirm availability and lead time by the end of the next business day.
Or call us directly on 1300 730 499
Need help with your rental?
1300 730 499 We’re available Monday to Friday, 8:30 am to 5:00 pm. Urgent hire: call rather than send the form. rentals@megavar.com.auQuestions about this hire?
Call 1300 730 499 for availability, rates and booking. If a set plays up during the hire, call us and we will arrange a fix or a replacement. Counter collection and returns 8:30 am to 5:00 pm, Monday to Friday.
FAQ
Frequently Asked Questions
Megger DLRO 600A Micro-Ohmmeter
What does the DLRO 600A measure?
It measures very low resistance values using high test current to validate high‑current connections, contact surfaces and joints.
How much current can it output?
It can output up to 600 A DC (subject to supply voltage and load), which ensures highly accurate resistance measurement in large conductors.
Why would I choose up to 600 A compared to lower current models?
Higher test current reduces measurement errors from contact and lead resistance, and gives a more realistic representation of performance in high‑current systems.
Is it suitable for field use?
Yes. The unit is compact (14.5 kg) and ruggedised, making it suitable for substation, industrial or remote site deployment.
How are results stored and transferred?
Results (up to 300 records) can be stored in onboard memory with notes, and then downloaded via RS232 for reporting and analysis.
What’s included in the rental?
The rental package includes the DLRO 600A main unit, high‑current test leads and Kelvin clamps, power cable, RS232 download cable, carry case and quick‑start guide.
What support comes with the hire?
Each instrument is supplied with the manufacturer’s manuals. If a set plays up, call us and we will arrange a fix or a replacement.
What is the minimum hire period?
The minimum hire is one day. The daily rate steps down for hires of 8 days or more, and longer project hires can be quoted on 1300 730 499.
Do you deliver Australia‑wide?
Yes. The equipment is available for national delivery and pickup across Australia. Freight options can also be arranged.
Is a deposit or insurance required?
A security deposit may apply depending on rental duration and account status. For high‑value equipment, proof of business insurance may be requested.
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