MSG Equipment MS005 Manual De Usuario página 30

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Test bench MS005/MS005A
6.2*. Using the output voltage control buttons (see item 6 in Figure 23), smoothly adjust the
alternator's output voltage within the range from minimum to maximum. The measured voltage
should change proportionally.
*For Lamp-type alternators without output voltage control, this step is not required.
6.3. For C JAPAN type alternators, set the stabilization voltage setting to "OFF" mode – the
measured stabilization voltage should be equal to the battery voltage. Then set the stabilization
voltage setting to "ON" mode – the measured stabilization voltage should be within 14 to 14.7 V.
7. Evaluate the alternator's performance under load by:
7.1. Setting the drive speed within 2500-3000 rpm.
7.2. Setting the generation voltage within 14 to 14.8 V. For C JAPAN type alternators, switch to the
"ON" mode.
7.3. Smoothly increase the load on the alternator while the value of output voltage should
remain constant and the value of alternating current in the circuit B+ "I, AC" should not exceed
10% of the value of the set load (for example, with a load of 50A the value of "I, AC" should not
exceed 5A). Also, the current oscillogram should not show large peaks, the values should
fluctuate within the same limits.
To determine the technical condition of the alternator, it is sufficient to set a load from 50
to 80 A.
8. For IStars 12V type alternators, perform a check of its operation in starter mode by:
8.1. Stopping the alternator drive.
8.2. К Pressing the "Starter" button to start the test mode, during which the alternator should
reach the idle speed of the engine.
9. To complete the alternator diagnostics, stop the alternator drive and then exit the test mode.
After that, the alternator can be removed from the bench.
10. Failure to comply with any of the requirements in points 4 – 8.2 indicates a fault in the
alternator.
6.5. Diagnostics of alternators without voltage regulator
The diagnosis of alternators without voltage regulators is performed using the MS-33042 (42A)
cable. The sequence of operations is as follows:
1. Fix the alternator on the bench. Put the belt on the pulley and tension the belt.
2. Connect the MS-33042 (42A) cable to the alternator according to Table 5.
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