Patent ID: 8313038

Claim:
A system for providing alternative cooling, in addition to an air conditioning (A/C) system, to a cabinet housing electrical equipment, the system comprising: a blower subsystem including one or more blowers for drawing air from outside of the cabinet into the cabinet, the blower subsystem comprising a bank of blower units and a path of airflow from outside of the cabinet into the cabinet that is absent an evaporator element of an A/C unit; a damper subsystem including a louver arrangement for controlling air exhaust; a controller operated from a DC supply, the controller including a microprocessor having at least a first analog input, a second analog input, a plurality of alarm inputs, one or more first control outputs, a second control output, and a third control output; wherein: the first analog input connects to a first thermistor to measure a first temperature inside the cabinet; the second analog input connects to a second thermistor to measure a second temperature outside the cabinet; the third control output connects to the A/C system for inhibiting or re- activating the A/C system based on at least the first temperature and the second temperature, the one or more first control outputs connect to the blower subsystem for respectively operating the one or more blowers based on at least the first temperature when the A/C system is inhibited or stopped for any reason; the second control output connects to the damper subsystem for opening/closing the louver arrangement when the one or more blowers are operating/stopped.