The Megger DLRO200115V-No Leads Digital Low Resistance Ohmmeter, 115V, 200A, No Test Leads measures contact resistance in high voltage circuit breakers, disconnecting switches (isolators), busbar joints, or for any other low resistance measurement. 300 sets of results may be stored in the on-board memory for later download to a PC or may be output directly to a printer via the RS232 port. User may also add notes to any stored result by using the on-board alphanumeric keypad, thereby making later identification of results straightforward.

For applications that demand a smooth DC current, the DLRO200-115V-No Leads has extra filtering on the output to reduce mains frequency ripple and can drive 200 A through a total current loop resistance of 11 mΩ. The filtered output of the DLRO200-115V-No Leads also eliminates magnetic transients that could inductively trip a breaker's control (bus differential relay), if left in the test circuit.

Its small size plus a water/dust ingress rating of IP54 makes the test set equally at home in the workshop, on the production floor, or in the field. The high current capability and compact design make the DLRO200-115V-No Leads suitable for testing circuit breaker contacts, switch contacts, busbar joints or other applications where high current is needed.