In medical facilities, the electrical distribution architecture must provide for an automatic switching system between the main distribution network and the safety and/or replacement sources in the event of network interruption.
IEC 60364-7-710, which describes the rules for electrical installations in medical locations, sets the time by which power must be restored. It establishes several classes depending on the type of care given to patients.
In Class 0.5, operating theatres cannot be switched-off for more than 0.5 seconds.
Class 0 → no break
Class 0.5 → short break ≤ 0.5 s
Examples of location with break ≤ 0.5 s
operating theaters, anaesthetic room, intensive care, recovery
Class 15 → medium break ≤ 15s
Class > 15 → medium break ≤ 15s
Examples of locations with break ≤ 15 s allowed
electrocardiography, electroencephalography, endoscopy
Choose the switching type
The switching type should be selected based on the class expected. The type will determine the switching time between the two devices and therefore the break time.
with UPS + STS
with UPS + ATSE
with UPS + ATSE
UPS: Uninterruptible power supply
STS: Static transfer system
ATSE: Automatic transfer switching equipment
STATYS and ATyS transfer switches
Static and electromechanical transfer switches meet the requirements for electrical architecture in hospitals.
STATYS HC static transfer systems (STS) meet Class 0 requirements.
Depending on the architecture, ATyS M automatic transfer switching equipment (ATSE) meets Class 0.5 or Class 0 requirements in association with MODULYS uninterruptible power supplies (UPS).
To ensure the electrical availability and insulation monitoring for group 2 medical locations, these devices can be integrated into MEDSYS medical bay.