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ELECTRICAL SAFETY


alarm memory light illuminated on the main unit. This ensures that the fault is not forgotten, and the equipment is checked. In an operating theatre equipped only with a residual current device, which would have turned off the electricity in the event of a device failure, the system would not have given a sufficiently early waning. The insulation-level monitoring system prevents damage, controlling each outlet and device. As soon as a problem occurs, the system will sound an alarm before a dangerous situation occurs.


A long history in medical insulation monitoring


PPO Elektroniikka was founded in 1981 to develop a system to improve electrical safety in operating theatres, with the company’s first-generation insulation monitoring system completed the same year. Our system found that electrical failures were clearly a risk to patients, staff, and theatre equipment. At the request of hospital engineers, our first digital insulation monitoring device was launched in 1983. The system revealed a big problem – there were many more medical devices with electrical current leakages than had been expected. Hospitals were suffering more than 20 device alarms a day. Since that year, insulation-level and transformer


development over the past three decades. We continuously consult partners on troubleshooting and diagnostics and solve problem situations together. Continuous support, commissioning training, and commissioning inspections from the same provider, facilitate processes and ensure reliability. We are also an active member of the Association of Finnish Hospital Engineering. One of our latest projects was the New Children’s Hospital in Helsinki. In Finland, the treatment of demanding paediatric illnesses such as cardiac surgery and organ transplantations is centralised at the New Children’s Hospital. This hospital is part of the joint municipal authority of the Hospital District of Helsinki and Uusimaa (HUS). HUS has been a customer of ours since the 1980s. Since the 1980s, we have supplied insulation monitoring systems to every hospital in Finland.


The insulation monitoring system with medical isolation transformer built in an IPS rack.


monitoring systems have been mandatory in Finland.


Our long-term collaboration with technical and engineering personnel in hospitals and electrical engineering companies has been absolutely key to both our company and product


Maximising safety with a new-generation system At the start of 2019, our new fifth- generation MEV-8 was completed. We developed the new equipment in cooperation with hospital engineers and international partners. This system meets all national and international regulations and technical standards. The starting point for the ‘new-generation’ equipment


September 2020 Health Estate Journal 71


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