So, which electrical systems should we commission in your hospital? Any system or subsystem can be commissioned, but the following is a summary of the most typical, and arguably most important, electrical systems to be commissioned.
Properly commissioned emergency power systems are efficient, reliable, and sustainable. When not properly commissioned or maintained, they often “run wild.” No electrical system is more important to patient safety than the emergency power system. Components of the emergency power system that must be commissioned include:
• Engine-generator sets
• Paralleling switchgear
• Automatic and manual transfer switches
• Fuel systems: storage tanks, day tanks, pumps, valves
• Annunciation and alarms
• Engine cooling systems
• Control wiring and engine start wiring
People are often surprised that extensive fuel system testing and generator alarm annunciation testing are part of the emergency power system commissioning.
A critical component of the electrical system is an emergency power systems sequence of operation. Commissioning processes need to promote incorporation of sequence of operations in electrical construction documents, especially for complex electrical systems and emergency power systems. This is absolutely essential for systems with multiple paralleled engine-generators and load shedding. The generator operation sequence should be set for the operation in critical situations of main power failure.