| Standards Council of Canada
The UNINTERRUPTIBLE POWER SYSTEM may also serve to improve the quality of the power source by keeping it within specified characteristics. This Standard is applicable
Uninterruptible Power Supply System (UPS System) means all materials and components detailed within this requirement that together provide a fully-functioning battery backup for the Traffic Signal Controller operations.
The UPS shall be configured to switchover from inverter mode to normal operation when the utility line has been restored for fifteen (15) seconds. The Contractor shall be responsible for integration into the City's traffic monitoring system via SNMP.
The UPS Control Unit shall provide voltage regulation at 120VAC ± 3 % under any line, load or battery condition with a frequency regulation of 60Hz ± 3Hz synchronized to the utility main. The UPS Control Unit shall limit total harmonic distortion (THD) to 3% or less for linear loads.
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