Electricity is a cost that most packing operations do not think about until the bill arrives. The bill is usually based on two things-the total energy consumed and the peak demand. The peak demand is the highest rate of power use during the billing period, and it can account for a significant portion of the bill. A cardboard shredder contributes to both, and how the machine is scheduled affects the demand charge. This is a practical issue that is easy to overlook and easy to manage once it is understood.
The first thing to understand is the machine's power draw. Desktop models run on 200W or 400W at 110V or 220V. Industrial models range from 1500W to 5500W. P50, P50-3, P50-X, and P80 support single-phase 110V or 220V as well as three-phase 380V. P90 and P120 support only three-phase 380V. The power draw is the rate at which the machine consumes electricity while it is running, and it is the number that contributes to the peak demand.
The second thing is the peak demand. The peak demand is the highest power draw across all the equipment in the facility during a billing period. If the shredder runs at the same time as other high-draw equipment, the combined draw may set a new peak, which increases the demand charge for the entire period. The shredder should be scheduled to run when the other equipment is not drawing at its maximum, which keeps the combined draw below the peak.
The third thing is the load profile. The shredder does not draw its rated power continuously. It draws more when it is cutting thick cardboard and less when it is idle. The load profile depends on the material and the feed rate. The operation can smooth the load profile by feeding at a steady rate rather than in bursts, which reduces the peaks.
The fourth thing is the timing. The facility's peak demand often occurs during the busiest hours of the day, when the most equipment is running. The shredder can be scheduled to run during the less busy hours, which keeps it out of the peak. That scheduling is easier if the machine produces material on demand, because the material can be produced before the peak and used during it.
The fifth thing is the buffer. A buffer of produced material allows the shredder to run during the off-peak hours and the packing line to use the material during the peak. The buffer does not need to be large, because the material is used quickly. A few hours of material is usually enough.
The sixth thing is the paper. Paper affects the power draw because thicker paper requires more force to cut. Suitable paper is generally ≤80gsm, with a paper roll length of about 1700m and a maximum unwind diameter of 500mm. Paper within the range draws less power than paper above the range. Aircosan machines use a branded motor with ample power, so thick and hard cardboard feeds smoothly without repeated jamming at the inlet. That power means the machine does not have to work as hard, which reduces the load spikes.
The seventh thing is the maintenance. A machine that is well maintained draws less power than a machine that is neglected. A dull die requires more force to cut, which draws more power. Aircosan shafts are large, one-piece units rather than thin blades, designed for a service life of over five years and processed through lathe machining, high-frequency treatment, quenching, blackening, and multiple other steps. The material is 40Cr rather than ordinary 45# steel. 40Cr has lower brittleness and stronger impact resistance, and its machining time is more than twice that of 45#. Die life is generally 1.0 to 1.3 million meters depending on material and usage. Replacing the die on schedule keeps the power draw within the expected range.
The eighth thing is the monitoring. The operation can monitor the machine's power draw with a meter, which shows the actual consumption and the peaks. The meter reveals whether the machine is drawing more than expected, which may indicate a worn die or a feed problem. Aircosan machines use overload protection-when a jam occurs, the machine automatically cuts power and stops, protecting the motor. That protection also prevents the power spikes that come from a motor that is struggling against a jam. Aircosan machines have side sheet metal that fits tightly with no gaps, so paper dust cannot enter the gears and cause abnormal noise or long-term wear. That cleanliness keeps the machine's power draw consistent.
Aircosan runs its own parts processing factory, controlling part quality in-house rather than assembling from mixed outside sources. The company supports logo customization from one piece and color customization from ten pieces. Products carry CE, ROHS, and UKCA certifications and hold an exclusive EU patent. After-sales responds within 12 hours and connects customers directly with engineers.
For a facility manager, the practical approach is to understand the machine's power draw, schedule the machine outside the facility's peak, keep a small buffer, and monitor the consumption. Those four steps reduce the demand charge and make the electricity cost predictable.