Electric Drive System

Relevant Characteristics for Periodic Inspection

Possible Measures

Possible Non-Energy Benefits (NEBs)

Motor
Machine

I) Older than 15 years or having low efficiency (<IE3) (efficiency according to EU Regulation 2019/1781).

Replacement of motor and/or application at the end of its economic life with high-efficiency models with proper sizing.

- Increased reliability due to new technology.

- Lower maintenance from modern motors with less wear.
- Improved process control, leading to better product quality.

Pump (including motor)

II) Older than 15 years or having low efficiency (lower than the minimum efficiency according to EU Regulation 547/2012).

Replacement of pump and motor with energy-efficient models.

- Extended equipment lifespan.
 - Reduced maintenance costs due to new pumps.
 - Better operational stability.

Fan (including motor)

III) Older than 10 years or having low efficiency (lower than the minimum efficiency according to EU Regulation 327/2011).

Replacement of fan and motor with efficient models and capacity adjustment.

- Improved air quality through better ventilation control.
 - Lower noise emissions, improving the working environment.
 - Reduced vibrations, leading to less wear and tear.

Compressor (including motor)

IV) Where the compressor package is older than 10 years.

Replacement of outdated compressors with efficient models including energy recovery systems.

- Improved process reliability and uptime.
- Reduced noise pollution.
 - Lower maintenance costs due to newer technology.

Motor
Pump
Fan
Compressor
Machine

V) Not turned off (or down) during low (process) load or idle periods, and continue running regardless of process demand.

Proper control of the systems to turn off unused motors, pumps, fans, compressors, and machines, and remove unnecessary bypasses.

- Increased productivity through more efficient process control.
 - Extended equipment life by reducing unnecessary usage.
 - Improved process stability through better load control.

Motor
Machine

VI) Not adjusted to changing functional requirements (compared to the design), causing underloaded operation (low load, <60%).

Adjust or replace the machine with a high-efficiency model and properly tune power, frequency, flow, and controls to match demand; check periodically.

- Better alignment with process requirements for increased flexibility.
 - Less wear and tear, leading to less downtime and lower maintenance costs.
 - Improved reliability and lifespan of the motors.

Pump
Fan
Compressor

VII) Not adjusted to changing functional requirements (compared to design), resulting in insufficient operating hours near the optimal working area/BEP (best efficiency point).

Optimize or replace components to better align with the optimal working area (BEP).

- Improved system performance by operating in the optimal range.
 - Lower repair and maintenance costs.
 - Reduced unexpected failures, leading to higher production efficiency.

Motor
Pump
Fan
Compressor
Machine

VIII) Having inefficient components and/or settings, such as throttling valves, vanes, inefficient transmissions, bypasses, (parts of) piping with high flow resistance.

Replace and/or adjust one or more components of the drive systems, for example, remove throttling and apply speed control, use a high-efficiency transmission, apply direct drive with speed control, and modify piping.

- Reduced mechanical wear through optimization.
 - Less downtime due to failure through better adjustment.
 - Improved system control, leading to higher product quality and process safety.