Backup protection switch to prevent reverse power flow in a ups

Details Backup protection switch to prevent reverse power flow in a ups Backup protection switch to prevent reverse power flow in a ups

H - Electricity

02

J

323/6

H02J 9/06 (2006.01)

Patent

CA 1304447

- 8 - BACKUP PROTECTION SWITCH TO PREVENT REVERSE POWER FLOW IN A UPS Abstract A UPS system includes a mechanical backup input line isolation switch to provide mechanical isolation between the primary energy source connected to the input line and the secondary energy source upon detection of a failure of an electronic isolation switch normally providing isolation between the input line and the secondary energy source. Detection of such a failure is accomplished by means of a dummy load which is connected in across the input line. Its impedance is sized to permit a small low level of current flow, above normal leakage current levels premitted by a functioning semiconductor electronic line switch, if energy is reverse coupled from the reserve energy source via a failed electronic line switch without draining significant power from the primary energy source when the UPS is normally operative and deriving power from the primary energy source. A power flow direction sensing circuit detects the direction of power flow at the input to which the primary energy source is connected to the UPS and a control circuit responsive to the power flow direction sensing circuit disconnects the input from the primary energy source if reverse power flow is detected by activating a mechanical switch to disconnect the inputfrom the primary energy source.

577864

Affiliated with

Also associated with

Rating

Backup protection switch to prevent reverse power flow in a ups does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Backup protection switch to prevent reverse power flow in a ups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backup protection switch to prevent reverse power flow in a ups will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1263625