Specifications

SVI Trucks
Freightliner 4-Door Demo
SVI #917 01/05/15
17
UL 120/240 VAC CERTIFICATION
The 120/240 volt electrical system shall be third-party, independent, audit-certified through Underwriters
Laboratory (UL) to the current edition of NFPA 1901 to perform as listed below;
The prime mover shall be started from a cold start condition, and the unloaded voltage and frequency shall be
recorded.
The line voltage electrical system shall be loaded to at least 100% of the continuous rated wattage stated on the
power source specification label. Testing with a resistive load bank shall be permitted.
The power source shall be operated in the manner specified by the apparatus manufacturer as documented on
instruction plates or in operation manuals. The power source shall be operated at a minimum of 100% of the
continuous rated wattage as stated on the power source specification label for a minimum of two (2) hours.
The load shall be adjusted to maintain the output wattage at or above the continuous rated wattage during the
entire 2-hour test.
The following conditions shall be recorded at least every 1/2 hour during the test:
1) The power source output voltage, frequency and amperes
2) The prime mover’s oil pressure, water temperature and transmission temperature, if applicable
3) The power source hydraulic fluid temperature, if applicable
4) The ambient temperature and power source air inlet temperature
The following conditions shall be recorded once during the test for power sources driven by dedicated auxiliary
internal combustion engines:
1) Altitude
2) Barometric pressure
3) Relative humidity
If the generator is driven by the chassis engine and the generator allows for operation at variable speeds, the
chassis engine speed shall be reduced to the lowest rpm allowed for generator operation and the voltage and
frequency shall be recorded.
The load shall be removed and the unloaded voltage and frequency shall be recorded.
Voltage shall be maintained within ±10% of the voltage stated on the power source specification label during the
entire test. Frequency shall be maintained within ±3 Hz of the frequency stated on the power source specification
label during the entire test.
The total continuous electrical loads, excluding those loads associated with the equipment defined in NFPA
22.15.7.3.11.2, shall be applied during the testing unless an auxiliary engine drives the power source.
If the apparatus is equipped with a fire pump, the 2-hour certification test of the power source shall be completed
with the fire pump pumping at 100% capacity at 150 psi (1000 kPa) net pump pressure. The test shall be
permitted to be run concurrently with the pump certification test.