AEMC 6550 10 kV and 6555 15 kV megohmmeters

AEMC has introduced the 6550 10 kV and 6555 15 kV megohmmeters. The meters are expert tools for testing insulation safely and accurately and are suitable for use on rotating equipment and machinery operating at 10 kV or higher.

They are claimed to be the only fully automated 10,000 and 15,000 V graphical insulation testers. The meters provide insulation measurements up to 30,000 GΩ. Test results include DAR, PI, DD, ΔR, capacitance, leakage current and programmable temperature correction of resistance readings.

Users can program up to three-step voltage profiles on the megohmmeters (from 40 to 10,000 or 15,000 V, dependent on model), each containing up to ten steps. The meters include three ramp profiles and three programmable test voltages in addition to the standard fixed voltages of 500, 1000, 2500, 5000, 10,000 and 15,000 V.

These units have a USB interface and a data storage function, which permits storage of test results in files specific to the device under test. The included DataView software configures and runs tests directly from a PC and creates data analysis reports.

The meters have a large backlit graphical LCD screen with digital display, bargraph and R(t)+v(t), i(t) and i(v) graphs and use a 5 mA charging current. Multiple test modes are possible, such as voltage ramp and step with ‘burning,’ ‘early break’ and ‘I-limit’ modes.

The meters allow storage of 80,000 time-stamped measurements and have three filters to optimise measurement stability. They are suitable for a range of applications, including insulation testing on cables, transformers, motors, generators, insulators and wiring installation.