Standard Bus Procurement Guidelines - APTAStandards.com
Standard Bus Procurement Guidelines - APTAStandards.com
Standard Bus Procurement Guidelines - APTAStandards.com
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<strong>Standard</strong> <strong>Bus</strong> <strong>Procurement</strong> <strong>Guidelines</strong><br />
batteries conforming to SAE <strong>Standard</strong> J537 or four maintenance free batteries providing equivalent<br />
performance shall be provided.<br />
The battery tray shall be made of stainless steel and ac<strong>com</strong>modate both type of batteries and shall pull<br />
out easily and properly support the batteries during service, filling with manual or automatic equipment,<br />
inspection and replacement. A positive lock shall retain the battery tray in the normal position.<br />
Battery cables shall be flexible and sufficiently long to reach the batteries in extended positions without<br />
stretching or pulling on any connection and shall not lie on top of the batteries. The battery terminals<br />
and cables shall be color-coded with red for the primary positive, black for negative, and another color<br />
for any intermediate voltage cables.<br />
5.5.8 MASTER BATTERY SWITCH<br />
A master battery switch shall be provided in the battery <strong>com</strong>partment near the batteries for <strong>com</strong>plete<br />
disconnecting from all bus electrical systems. The location of the master battery switch shall be clearly<br />
identified on the access panel and be accessible in less than 10 seconds for activation. The master switch<br />
shall be capable of carrying and interrupting the total circuit load. Any equipment that requires power<br />
without reference to the master battery switch shall be listed in attachments to Part 5: Technical<br />
Specifications. Opening the master switch with the power plant operating shall not damage any<br />
<strong>com</strong>ponent of the electrical system. The location of the master battery switch shall prevent corrosion<br />
from fumes and battery acid when the batteries are washed off.<br />
5.5.9 FIRE DETECTORS<br />
At least 2 temperature-sensitive sensors shall be provided. They shall be located in the engine<br />
<strong>com</strong>partment under all horizontal bulkheads, above and downwind of the major heat sources, and in<br />
areas likely to be wetted by leaking flammable fluids. Additional sensors shall be located in other<br />
potentially critical areas. The sensors shall detect over-temperature in the critical areas and shall activate<br />
the fire alarm bell and warning light in the driver's <strong>com</strong>partment. The sensors shall return to normal<br />
setting and deactivate alarms when the temperature returns to normal.<br />
5.5.10 RADIO NOISE ATTENUATION<br />
Proper suppression equipment shall be provided in the electrical system to eliminate interference with<br />
radio and television transmission and reception. This equipment shall not cause interference with any<br />
electronic system on the bus.<br />
Technical Specifications 193 10/18/07
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