The high current capability and compact design make Megger DLRO 600 Digital Micro-Ohmmeter suitable for testing circuit breaker contacts, switch contacts, busbar joints or other applications where high current is needed.
The Megger DLRO 600 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. The Megger DLRO 600 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 7 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 Megger DLRO 600 is ready to carry out a test. As soon as the potential leads are connected, a test will start. To repeat a test, simply break contact with the voltage probes and remake contact.