Higher harmonics cause medical equipment to break down

  • Customer: hospital
  • Problem: Equipment fails because the electrical voltage does not comply with European standards
  • Solution: six ADF P300 units

During the final phase of the construction of a large hospital, electrical problems were discovered. While performing measurements to test the voltage, it was discovered that medical equipment was not working as expected. It was concluded that the voltage quality did not meet the European standard. The problem worsened when emergency power was needed during a power failure. 

Voltage does not meet European power quality standard

Due to electrical instability and voltage insufficiency, medical equipment suppliers refused to provide a guarantee for their equipment. In order to meet the standard and maintain the guarantees on valuable medical equipment, the hospital looked for a solution that would eliminate electrical disturbances (harmonics), ensure a back-up in case of failure and could be managed and monitored from a remote location. Furthermore, it was crucial to be able to extend the solution in the future, as hospitals are constantly evolving and therefore constantly updating their equipment. In addition, it was necessary to be able to use the solution under all conditions, such as during mains operation, emergency power. 

70% reduction in harmonics after installation of six ADFs

70% reduction in harmonics after installation of six ADFs

The solution consisted of six ADF P300 units placed in three different locations throughout the hospital - all with full redundancy. The modular structure of the units allows for easy expansion by simply adding additional modules. And the fact that all units can be monitored and controlled remotely meant that all the hospital's requirements for a food quality solution could be met.

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Room to grow

In order for the hospital to meet the standard, harmonics had to be reduced by 50%. After the installation of the six ADF P300 units, the harmonics in the voltage have been reduced by more than 70%, bringing the hospital well within the European standard and significantly increasing the energy efficiency of the site. The hospital now even has room to grow. In addition, the ADF units ensured stable voltage quality during emergency power, whereas without the solution the voltage quality tended to drop by 50%. The medical equipment suppliers expressed their confidence in the system by offering active guarantees for all equipment. The redundancy of the ADF solution allows the hospital to be fully operational 24/7, even if an ADF P300 fails or is under maintenance.

What is an ADF?

The development of electronics ensures that compensation techniques are becoming more intelligent. In recent years, we have seen that an active dynamic filter (ADF) is increasingly being used to solve power quality problems. But what is an ADF? Read about it in the white paper 'Active Dynamic Filters'.

Read the white paper