Specifications

Loveland Fire/Rescue
Pumper
Production Specification
SVI #769 Page 92 of 125 June 17, 2010
..\4) Pricing & Change Orders\Production Change Order.pdf
Minimum Continuous Electrical Load
The minimum continuous electrical load shall consist of the total amperage required to simultaneously operate the
following in a stationary mode during emergency operations:
1) The propulsion engine and transmission
2) All legally required clearance and marker lights, headlights, and other electrical devices except windshield wipers and
four-way hazard flashers
3) The radio(s) at a duty cycle of 10 percent transmit and 90 % receive (for calculation and testing purposes, a default
value of 5 A continuous)
4) The lighting necessary to produce 2 fc (20 lx) of illumination on all walking surfaces on the apparatus and on the
ground at all egress points onto and off the apparatus, 5 fc (50 lx) of illumination on all control and instrument panels,
and 50 percent of the total compartment lighting loads
5) The minimum optical warning system, where the apparatus is blocking the right-of way
6) The continuous electrical current required to simultaneously operate any fire pumps, aerial devices, and hydraulic
pumps
7) Other warning devices and electrical loads defined by the purchaser as critical to the mission of the apparatus
If the apparatus is equipped to tow a trailer, an additional 45 A shall be added to the minimum continuous electrical load
to provide electrical power for the federally required clearance and marker lighting and the optical warning devices
mounted on the trailer.
The condition of the low voltage electrical system shall be monitored by a warning system that provides both an audible
and a visual signal to persons on, in, or near the apparatus of an impending electrical system failure caused by the
excessive discharge of the battery set.
The charge status of the battery shall be determined either by direct measurement of the battery charge or indirectly by
monitoring the electrical system voltage.
If electrical system voltage is monitored, the alarm shall sound if the system voltage at the battery or at the master load
disconnect switch drops below 11.8 V for 12 V nominal systems, 23.6 V for 24 V nominal systems, or 35.4 V for 42 V
nominal systems for more than 120 seconds.
A voltmeter shall be mounted on the driver’s instrument panel to allow direct observation of the system voltage.
Electromagnetic Interference
Electromagnetic interference suppression shall be provided, as required, to satisfy the radiation limits specified in SAE
J551/1, Performance Levels and Methods of Measurement of Electromagnetic Compatibility of Vehicles, Boats (up to 15
m), and Machines (16.6 Hz to 18 GHz).
Wiring Diagram
A complete electrical wiring schematic of actual system shall be provided with finished apparatus. Similar or generic type
electrical schematics shall NOT BE ACCEPTABLE.
Low Voltage Electrical System Performance Test
A low voltage electrical system test certification shall be provided with delivered apparatus.