AC Power Load Management System
[ Patent Pending ]
The PRIORITIZER is an AC Load Management System that combines
and manages several loads with partial duty cycles into one
equivalent load of up to 100% duty cycle. It can be used when
emergency backup power is limited (a standby generator), full
time with alternate power sources (solar or wind-powered battery
banks, fuel cells, or other non-grid sources), or full time with
utility power (to limit peak demand billing surcharges).
- Add more motor loads without overloading your backup
Genset or Inverter
- Automatically sequences high power loads to reduce peak
- Peak Load Shaving to reduce utility peak demand charges
- Prevents multiple surge (motor) loads from
- Reduces power surges by Zero-Crossing switching
- Remote Utility Override for backup use only
- Easy installation - priority selection is hard-wired
- Controls 3, 4, 6, or 8 LOADS 120/240 V mixed on 1 or 2
APPLICATION EXAMPLES :
|PEAK LOAD SHAVING
|DRYERS - FANS
|PUMPS-POTABLE WATER AND SUMP PUMPS
||BATCH PROCESS SOLUTION HEATERS
||WATER HEATER TANK
||BATTERY CHARGER ELECTRIC FORKLIFT
||INVERTER/UPS BATTERY CHARGER
Peak shaving load management reduces the need to oversize a
Genset or Inverter system for worst case peak load created by the
random timing of self-starting loads. By preventing more than one
of the combined loads from running at the same time, the
PRIORITIZER helps to solve the problem of sizing the backup power
system capacity required to handle multiple self-starting high
power loads, especially those with a high starting surge current.
This has the effect of increasing the self-starting motor load
capacity of a backup (or off-line) power source.
Unit automatically switches off loads or appliances of
lower priority when a higher priority load activates, and
turns them back on when it's finished.
When utility power is available the unit can enable all
of the loads, only sequencing when source power is
limited, as from a generator, battery bank, or fuel cell.
Of course, if you wish to sequence your loads at all
times, for demand management, this feature is also
When a high priority load activates, the lower priority
loads are disabled in typically 16 to 33 milliseconds (1
to 2 AC cycles). This allows for maximum available
starting amperage for motors.
The unit waits five seconds before lower priority loads
are re-energized to eliminate false starts due to contact
bounce in appliance controllers
The unit may be wired into your electrical service in
such a way as to allow you to choose the number and
priority level of the appliances which it monitors and
controls. You may mix 120 volt and 240 volt loads freely
among the circuits.
The unit is thermally protected, shutting off all
controlled loads if they should pull too much current,
thereby overheating the unit. When the relays cool down,
the unit will automatically begin sequencing once again.