SAE J277-1995 MAINTENANCE OF DESIGN VOLTAGE-SNOWMOBILE ELECTRICAL SYSTEMS

Foreword-This Document has not changed other than to put it into the new SAE Technical Standards Board Format.
This SAE Recommended Practice is intended as a guide toward standard practice, but may be subject to frequent change to keep pace with experience and technical advances. Hence, its use where flexibility of revision is impractical is not recommended.

1. Scope-This SAE Recommended Practice provides test methods and requirements for maintenance of design voltage in snowmobile electrical systems. It pertains to both battery-equipped and batteryless systems.

2. References-There are no referenced publications specified herein.

3. Samples for Test-Samples submitted for laboratory test shall be representative of the systems as regularly manufactured and marketed. Each sample shall include not only the electrical system, but also accessory equipment necessary to operate it in the normal manner.

4. Test Apparatus
4.1 Voltmeter-Alternating current(AC) or direct current (DC), as required, capable of ±2% accuracy of the measured reading. For AC measurements, either a true RMS voltmeter is required or the AC and DC components of the AC waveform must be measured separately and added algebraically as follows in Equation 1:
For AC measurements, the volmeter must have a minimum crest factor of 3.
4.2 Ammeter-DC, capable of ±2% accuracy of the measured reading.
4.3 Tachometer-Means of measuring engine rpm within±3%.

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