Fail-safe load power management system

Details Fail-safe load power management system Fail-safe load power management system

1991-03-14

1992-05-26

Stephan, Steven L.

Electricity: power supply or regulation systems

External or operator controlled

Phase controlled switching using electronic tube or a three...

323237, 323299, 315194, 315291, G05F 502, G05B 2402

Patent

active

051171783

ABSTRACT:
An electric power consuming system such as the lighting in a building has local control units for adjusting the power consumed by a preselected load or loads associated with each local control unit. The control units generate a selectable control voltage which has a first range specifying to the loads that no power should be consumed by the loads with voltage outside the first range specifying by its level the amount of power which the loads should draw. The system also includes energy management apparatus whose output is connected across the output of the control units and which can limit the power individual control units can specify to their loads. The invention comprises an interface circuit which connects the energy management apparatus to the control units and translates control voltages from the energy management apparatus falling within a second voltage range within the first range of the selectable control voltage, to a voltage falling outside the first voltage range. The energy management apparatus is of the type which during common failure modes, provides a control voltage within the second range. In this way, safety is not compromised by reason of malfunctioning energy management apparatus turning off lights in occupied areas.

REFERENCES:
patent: 5004972 (1991-04-01), Roth
patent: 5028862 (1991-07-01), Roth

Affiliated with

Also associated with

Rating

Fail-safe load power management system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fail-safe load power management system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fail-safe load power management system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-422441