Megger’s insulation resistance testers
November 2014
Electrical Power & Protection
Megger’s new MIT515, MIT525 and MIT1025 insulation resistance testers are smaller and lighter than previous models yet offer advanced features and rapid charge capability. The range consists of three models; an entry level 5 kV and two fully featured units, one 5 kV the other 10 kV. Resistance measurement is up to 10 T for the 5 kV models and 20 T for the 10 kV model.
A key productivity feature is the ability to take measurements when connected to line power/mains with a dead battery. Intelligent battery charging ensures the optimum charge rate as a function of battery level, resulting in minimum charge times. The rugged case provides ultimate protection for a portable instrument and a clip-on lead pouch ensures that leads remain with the instrument at all times. The case lid is removable for improved terminal access. IP rating is IP65 with the case closed preventing water/dust ingress. High reliability and safety are built in; all models are safety rated to CATIV 600 V and are double insulated.
Five preset voltage ranges are provided in insulation test mode, plus a user settable lock voltage range. Preconfigured diagnostic tests include polarisation index (PI), dielectric absorption ratio (DAR), dielectric discharge (DD), stepped voltage (SV) and ramp test. Simplicity of operation is achieved with two rotary switches and the large backlight display enables multiple results to be displayed simultaneously.
Advanced memory storage includes time/date stamping of results, logging of data and recall of results to screen. A fully isolated USB device interface (type B) is used for safe transfer of data to Megger’s PowerDB/Pro asset management software.
For more information contact Esias Labuschagne, Surgetek, +27 (0)11 792 1303, info@surgetek.co.za, www.surgetek.co.za
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