What the factory runs on.
WHY IT DESERVES SEPARATE ATTENTION
Manufacturing is power-intensive, and supply is unreliable.
WHAT TO ESTABLISH
Total connected load Load during normal operation Starting loads of large motors
WHY STARTING LOADS
Motors draw far more on starting, and generators sized on running load fail.
WHAT TO CALCULATE
Generator capacity including starting requirements.
WHAT TO ESTABLISH ABOUT SEQUENCING
That large motors start in sequence, not together.
WHY
It reduces the peak demand substantially.
WHAT TO PROTECT
Equipment against voltage fluctuation.
WHY
Fluctuation damages motors, drives and controls.
WHAT INTERRUPTION COSTS
Material in process, frequently Restart time The output lost
WHY MATERIAL IN PROCESS
Some processes cannot be interrupted without scrapping the batch.
WHAT TO ESTABLISH
Which processes those are, and what protection they require.
WHAT TO CALCULATE
Cost per hour of downtime.
WHAT THAT JUSTIFIES
Backup investment.
WHAT TO MEASURE
Power consumed per unit produced.
WHY
It reveals efficiency and it identifies equipment problems.
WHAT TO EXAMINE
Equipment running when it need not Compressed air leaks Lighting and cooling of unused areas Peak demand charges, where they apply
WHY COMPRESSED AIR
Leaks are invisible, constant and expensive.
WHAT WATER REQUIRES
Adequate supply and storage Quality appropriate to the use Treatment, where the process requires it
WHAT TO PLAN
Operation during interruption.
