MFT1721 - The most popular of the range of 17th Edition testers offering all the benefits of the MFT1710, including auto RCD testing and adding phase rotation, 3-phase RCD testing and current measurement with the optional clamp. This now adds an additional 100V insulation test range, true RMS voltage measurement, mV sensor input and Type B RCD testing.
Function:
Two and three wire non trip loop testing for fast repeatable results. Large bright LCD display showing dual parameters - loop resistance and fault current, insulation resistance and test voltage. Phase rotation indication for verification of rotating machinery . 3-phase RCD testing for industrial applications with no earth . Suite of earths test for electrode resistance measurement.On-board data storage and Bluetooth® download