The Transmille 3200 Series Electrical Calibrator provides a fast and safe solution for the calibration of Loop, RCD, PAT, and insulation testers. Traditional methods require multiple pieces of test equipment and expose technicians to hazardous voltages, often taking up to 45 minutes per tester. The 3200B dramatically reduces calibration time to under 15 minutes while significantly increasing operator safety, offering a cost-effective solution with a fast return on investment .

Key to its safety features is a dedicated localized mains socket on the front panel for direct connection of Loop and RCD testers. This eliminates the need for 4mm test leads and crocodile clips on live mains voltage, removing the risk of electric shock. PAT testers plug directly into the 3200's IEC inlet socket using the supplied calibrated lead, with an electrically floating earth bond post to accommodate PATs that cannot be used on earthed appliances .

The 3200 series is designed from the outset as a high-accuracy reference for electrical test equipment. It offers a comprehensive range of functions including insulation resistance up to 2GΩ at multiple test voltages (50V to 1kV) with 0.3% accuracy (10kΩ to 5MΩ), continuity resistance from 0.2Ω to 1kΩ with 1% accuracy, and AC voltage outputs from 100 to 400V with 0.2% accuracy. RCD testing covers current ranges from 3mA to 3A with timing accuracy of ±0.7ms .

The 3200B has been designed for portability with short warm-up times (less than 20 minutes) and weighs 10kg. An external HV adapter option allows insulation testers with test voltages up to 15kV to be used with the 3200, with resistances available up to 1TΩ. Interface options include RS232 standard with USB available via adapter. The unit operates on 230V/110V, 50/60Hz line power .