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Megger DLRO200 measures resistances between 0.1 µΩ and 1Ω, at high currents of up to 200 amps.
This versatile instrument can provide test currents from 10 amps up to 200 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.
The unique design allows the weight and size of Megger's DLRO200 to be kept to a minimum; the instrument weighs less than 15 kg. This small size makes DLRO200 equally at home in the workshop, on the production floor or in the field. The high current capability and compact design make DLRO200 suitable for testing circuit breaker contacts, switch contacts, busbar joints or other applications where high current is needed.
300 sets of results may be stored in DLRO200’s on board memory for later download to a PC or may be output directly to a printer via the RS232 port. You may also add notes to any stored result by using the on board alpha-numeric keypad, thereby making later identification of results straightforward.
As well as adding notes to stored results, the alphanumeric keypad allows you to set the test current directly by typing in the value required. DLRO200 will check the continuity of the test circuit, and will quickly ramp the test current up to the desired level. The keyboard is also used to set upper and lower limits for the result and also to prevent the use of excessive currents by setting an upper limit to the allowable test current.
DLRO200 uses a four terminal measurement technique to cancel the resistance of the test leads from the measurement.
The Megger DLRO200 operates in one of three modes, which are simply selected from the on screen menu.
CONTINUOUS mode is provided for users who wish to monitor a resistance over a period of time. Connect the test leads, select the test current and press the TEST button. DLRO200 will pass a current continuously, and measure the resulting voltage at 2 second intervals, until the test button is pressed to stop the test or the test circuit is interrupted.
In NORMAL mode you connect the leads, select the test current and press the TEST button. The test current will ramp up to the desired level, hold for 2 seconds and then ramp down. The whole process takes approximately 10 seconds.
In AUTO mode select the desired current, connect the current leads and press the TEST button. The TEST lamp will flash to show that the DLRO200 is ready to carry out a test. As soon as the potential leads are connected, a test will start. To repeat the test, simply break the circuit by removing the voltage probes, then re-make contact.
Measuring individual joints in a busbar is a good example of the convenience to be gained by using AUTO mode. The two current leads are connected to the ends of the busbar. They will remain connected here until all tests have been completed. When the voltage leads make contact across a joint, DLRO200 detects that all four leads are connected, carries out a test and stops. When you move to the next joint DLRO detects the new completed circuit automatically and carries out the next test, and so on until all joints have been tested. The results may be stored automatically and may be recalled to the display or downloaded for review.
Test Equipment has always been proud of being one of the most progressive specialist suppliers of test and measurement equipment. Australian owned and operated by experienced engineers, we offer extensive product and application knowledge as well as quality service, which translates into a seamless experience when you procure your test and measurement instruments from us.
We started as a small business, fueled by the knowledge that we could make a positive impact and have come a long way since our inception, growing a small range of products into a full range of hundreds of products from some of the most respected brands in the industry such as AEMC, FLIR Systems, Kyoritsu, Megger and Testrix Systems. We now cater for a massive number of clientele from all types of industries including electrical contractors, utility companies, engineering businesses and large corporations as well as a large number of local, and state government departments. We now serve the whole of Australia with various instrumentation including cable & pipe locators, drain, sewer & pipe inspection cameras, ground penetrating radar, thermal imaging equipment, power quality equipment and a whole range of industrial test instruments such as low resistance testers, insulation resistance testers and ground resistance testers.
At Test Equipment, we have a wide variety of payment options for ease of purchasing, including ZIP PAY, EFTPOS and bank deposit and we offer fast courier shipping to all parts of Australia because we understand that time is money.
Browse through our website, or search online for the product you need, or feel free to call us if you need any help or advice.