The ALT-85U is specialy designed to automatically test transit bus & military alternators. Can also test truck and auto units via direct drive or belt drive. Available in models from 30 - 50 HP with Load Banks from 500 to optional 900 Amps. Optional oil circulation unit provides oil at a constant temperature for long test procedures. The ALT-85U is designed to provide a highley detailed test of the alternator in a short time. The user friendly environment makes the setup and test procedure as simple as pressing a button. The machine not only tests the product to a preset limit, but has a diagnostic system built in. If the unit fails the tester will automatically give the operator a detailed explanation as to why the unit did not work. This eliminates the guess work by the operators and even unskilled persons can operate the tester and make diagnostics of alternators and voltage regulators. The ALT-85U alternator tester contains a specialized computer with a digital display, keyboard, variable speed drive motor, battery simulator and programmable electronic load. During the automatic test the computer controls the motor driver and load according to programmable test procedure to verify the alternator and voltage regulator. For a precise voltage regulator check, the vehicle's on board computer and connection problems are also simulated. Cut-in (turn on) speed, soft start delay, LCR (Load Control Response) function, feedback signal to the on board computer, tachometer output frequency, the rectifier's voltage drop and reverse diode leakage, the voltage regulator saturation voltage, stator voltage and many other parameters are also measured. When the test is complete, the computer verifies all parameters and prints reports.

Special software for statistical analysis and data collection is available too. For reliability tests and engineering analysis a special long time test mode is included. Computerized Alternator Tester ALT-85U Tester is supplied with built in label printer port (24 pin), built in RS232C serial interface for data exchange to a standard PC or collecting SPC data and test plugs for most popular applications. Available in many working voltages (208 to 480V at 50/60 Hz).