Quote:
Originally Posted by Genek
When your the only one at the park the voltage will be 125 or so. As it fills the demand will draw that down to
115 or lower. That’s OK but to low a voltage is a “killer” for any kind of motor...ie your refrigerator that costs a fortune. I have an internal surge protector with monitoring screen. You would be surprised at how
much the voltage can fluctuate. Anything goes out of range and it slams the door on your power source. It has a delay so when you hook up it monitors the connection for voltage, grounding, polarity and anything else that’s bad. After 142 seconds of good stuff it connects. Worth every penny!!!
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That delay is an added feature to protect your air conditioner compressor (and compressor in a residential style refrigerator as well). It has nothing to do with the unit checking the line source as that happens in milliseconds. When a compressor is running and power is removed (the compressor stops) the refrigerant line pressure on the high side (the output line of the compressor) is exceptionally high. Starting under this high pressure adds a high load to the compressor motor resulting in a high amp draw and heat. If the power cycles on and off rapidly (lights going on and off rapidly in your house during a storm) or the voltage drops to low (brown out, when the lights dim in your house during a storm) the lower voltage = higher amperage per Ohm's Law.
So long explanation but the delay is there to allow time for the refrigerant pressures to equalize between the liquid (output) and gas (input or suction) lines of the compressor to prevent the compressor from possibly locking up and burning up the motor windings. Other electronics such as your television, pc control boards can also be negatively affected by voltage variances or rapid on/off cycling.