The Calmet TB40 Four Position Meter Test Bench is used for calibration and testing of single and three phase electromechanical and electronic active and reactive electricity meters and portable test equipment.

The TB40 Test Bench comprises:

three phase voltage and current power source with internal reference 0.05 accuracy class. Three phase power source generates voltage up to 560V and current up to 120A with programmable shapes, frequency in 40…500Hz range and phase shifts in 0…±360° range, four position testing stand with photo scanning heads and cables, eight inputs multiplexer for received impulses from scanning heads, PC with Mpx8 PC software and Calpro 300 software.

The TB40 Test Bench, using Mpx8 PC software, performs the following automatic and simultaneous tests of 4 electricity meters:

measure the basic error characteristics and repeatability, checking the starting current, checking the no-load run, measure the influence of frequency, voltage, self-heating, distortion and special shapes of currents and voltages, reversed phase sequence, checking the impulse output and energy meter counter, checking the maximum power indicator.

The TB40 Test Bench, using Calpro 300 software, enables additionally to test the following devices:

protection relays, current transformers, current clamps, measurement transducers, Power Quality measurement devices.

The TB40 Test Bench employs modern precision power source with internal reference without need to use additional external reference energy meter with additional cables. By this conception of the TB40 Test Bench may be achieved simultaneously extremely compact size, light weight, high metrological properties at reasonable price.

The TB40 Test Bench is controlled by means of personal computer with installed Mpx8 PC software and Calpro 300 software in Windows operating system.