The new range of insulation resistance testers (IRTs) 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 up to 10 TΩ for the 5 kV models and 20 TΩ 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. The 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 CAT IV 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 Polarization Index (PI), Dielectric Absorption Ratio (DAR), dielectric discharge (DD), Stepped Voltage (SV) and ramp test. The 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 the safe transfer of data to Megger PowerDB / Pro, Advanced and Lite asset management software.