0
- for - F.M. Approvals - by - James S. Nasby Columbia Engineering Motor Drive Controller Functions and Operation
Topics Covered <ul><li>Type of Controller </li></ul><ul><ul><li>Manual </li></ul></ul><ul><ul><li>Combined Automatic </li>...
Type of Controller <ul><li>Manual Only Controller  </li></ul><ul><ul><li>Peerless &quot;Mantrol&quot; was U.L. Listed </li...
Timing <ul><li>Cranking </li></ul><ul><li>Delayed Starting: Which Demands? </li></ul><ul><ul><li>Sequence Start: Static De...
Non-Standard Functions <ul><li>Start Timing </li></ul><ul><ul><li>Sequential (Parallel Pumps) </li></ul></ul><ul><ul><ul><...
Additional Functions <ul><li>Breaker Test Switch </li></ul><ul><li>Re-Start Delay Avoids Re-closing Contactor with Motor B...
A Very Large Military Site Variable Speed Motor, Engine and Jockey Pump
Voltage Margins <ul><li>Low Line Performance </li></ul><ul><ul><li>During Motor Starting (Weak Source) </li></ul></ul><ul>...
Questions?
Upcoming SlideShare
Loading in...5
×

Basic Motor Drive Fire Pump Controller Functions

1,758

Published on

Basic Functions, Features and Options of Electric Motor Driven Fire Pump Controllers

Published in: Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
1,758
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
68
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Transcript of "Basic Motor Drive Fire Pump Controller Functions"

  1. 1. - for - F.M. Approvals - by - James S. Nasby Columbia Engineering Motor Drive Controller Functions and Operation
  2. 2. Topics Covered <ul><li>Type of Controller </li></ul><ul><ul><li>Manual </li></ul></ul><ul><ul><li>Combined Automatic </li></ul></ul><ul><li>Measurement </li></ul><ul><li>Timing </li></ul><ul><li>Remote Functions </li></ul>
  3. 3. Type of Controller <ul><li>Manual Only Controller </li></ul><ul><ul><li>Peerless &quot;Mantrol&quot; was U.L. Listed </li></ul></ul><ul><ul><li>Most F.P. Engine Panels do this </li></ul></ul><ul><li>Automatic Controller Must be both </li></ul><ul><ul><li>A Manual Controller -and- </li></ul></ul><ul><ul><li>An Automatic Controller </li></ul></ul>
  4. 4. Timing <ul><li>Cranking </li></ul><ul><li>Delayed Starting: Which Demands? </li></ul><ul><ul><li>Sequence Start: Static Demands </li></ul></ul><ul><ul><ul><li>Pressure (Weekly Test) </li></ul></ul></ul><ul><ul><ul><li>Deluge </li></ul></ul></ul><ul><ul><ul><li>A.C. PF Start </li></ul></ul></ul><ul><ul><li>Don’t Delay </li></ul></ul><ul><ul><ul><li>Remote Momentary Switch (Push Button) </li></ul></ul></ul><ul><li>High Zone Start - Which Demands </li></ul><ul><ul><li>Static Demands -and- </li></ul></ul><ul><ul><li>Remote Momentary (Don't Want to Start a Dry or Cavitating Pump) </li></ul></ul>
  5. 5. Non-Standard Functions <ul><li>Start Timing </li></ul><ul><ul><li>Sequential (Parallel Pumps) </li></ul></ul><ul><ul><ul><li>Which Demands are Delayed? </li></ul></ul></ul><ul><ul><li>High Zone Delay (Pumps in Series) </li></ul></ul><ul><ul><ul><li>Which Demands are Delayed? </li></ul></ul></ul><ul><li>Lockout - When OK? </li></ul>
  6. 6. Additional Functions <ul><li>Breaker Test Switch </li></ul><ul><li>Re-Start Delay Avoids Re-closing Contactor with Motor Back EMF present </li></ul><ul><ul><li>Will almost Always be Out of Phase </li></ul></ul><ul><ul><li>3/4 to 1-1/2 Seconds &quot;Open Circuit Magnetic Time Constant&quot; for Induction Motors. </li></ul></ul><ul><ul><li>Delay of 2 to 3 Seconds = One or More Time Constants (63% Drop) to Safe Levels </li></ul></ul><ul><li>Single Phase Protection </li></ul><ul><li>Shunt Trip </li></ul><ul><ul><li>A.C. Powered = 1/3 Odds of Tripping </li></ul></ul><ul><ul><li>D.C. Powered = Better Odds </li></ul></ul><ul><ul><li>Triple Redundant CPTs & D.C. Powered = Best Odds of Tripping. </li></ul></ul>
  7. 7. A Very Large Military Site Variable Speed Motor, Engine and Jockey Pump
  8. 8. Voltage Margins <ul><li>Low Line Performance </li></ul><ul><ul><li>During Motor Starting (Weak Source) </li></ul></ul><ul><ul><ul><li>15% Minimum </li></ul></ul></ul><ul><ul><ul><li>35% Better </li></ul></ul></ul><ul><ul><li>Stand-by - High Line </li></ul></ul><ul><ul><ul><li>480 x 110% = 528* </li></ul></ul></ul><ul><li>Affect on </li></ul><ul><ul><li>Function </li></ul></ul><ul><ul><li>Metering </li></ul></ul><ul><li>*Can be Even Higher for Service Entrance Equipment due to Close Proximity to the Building Transformer which might have Taps set to Compensate for Long Wire Runs. </li></ul>
  9. 9. Questions?
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×