PFC points to BMS
PFC points to BMS
(OP)
Dear all,
The BMS (Building Management System) monitors all pieces of equipment within the project. A submittal for the BMS mentions that the points taken from the PFC (Power Factor Correction) is only one point "general fault". Is this correct & sufficient.
Thank you.
The BMS (Building Management System) monitors all pieces of equipment within the project. A submittal for the BMS mentions that the points taken from the PFC (Power Factor Correction) is only one point "general fault". Is this correct & sufficient.
Thank you.






RE: PFC points to BMS
The entire point of the PFC system is to maintain a specific Power Factor. It makes sense the BMS would want to know WHAT the power factor is at any moment. This could be critical to managing the facility's power costs.
Keith Cress
kcress - http://www.flaminsystems.com
RE: PFC points to BMS
And so?? What will be the points that shall be connected to the BMS system??
Current through an ammeter? Voltage through a voltmeter?
Or a single point from a differential relay for example that subtracts vectorially both angles to calculate the power factor??
i.e. how is that P.F. as an output from the PFC (capacitor bank) can be calculated?
RE: PFC points to BMS
RE: PFC points to BMS
I'm not entirely sure either what's being asked in the OP...but I'll weigh in anyway.
IF the Building Management System provides only a general overview of the various services within the structure, and IF the term 'General Fault' is simply the text of the generic alarm that shows up at the monitoring site, and IF it is made clear that the responsibility of the attendant is to notify the on-call electrician of this alarm so further investigation can be undertaken, THEN the specification could be correct and sufficient...it looks like you have some spadework ahead of you.
The choice to monitor and / or control the power factor of a building's electrical supply is usually made by the owner or investors. The electrical design engineer figures out and recommends how best to do this, employing his or her qualifications, training and experience.
More spadework...
CR
RE: PFC points to BMS
Bill
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"Why not the best?"
Jimmy Carter
RE: PFC points to BMS
"Uh oh, the PFC is down. Save the Engineers, cook the Accountants..." (assuming here that it would be us Engineers who would program the BMS)
"Will work for (the memory of) salami"
RE: PFC points to BMS