Hi guys, I'll give you a brief run down of the system before I go into the problem. At the hospital where I work we have two back up generators. They're rated at 750KvA. In the event of mains failure, they both start up same time, one generator will then connect to the main busbars, then roughly 15 seconds later the second generator will synchronise and help take the rest of the load using a load shedding set up on our BMS.
So, here lies the issue at present... Its been brought up that we shouldn't be carrying out maintenance on the generators whilst they are switched on and potentially live. Reason being, if (in the unlikely event) you were to lose mains whilst on top of the generator checking the water, checking the oil, or even checking the battery acid levels, injury could occur. The only solution we have come up with so far is to isolate 1 generator at a time whilst carrying out the maintenance checks. Only problem being, is that one generator alone will not carry the full load of the hospital and would therefore trip out on overload. Unless there is some sort of set up that can be installed on the BMS to prevent this from happening I'm all out of ideas. Any suggestions or anyone else had a similar experience? Look forward to your comments.
So, here lies the issue at present... Its been brought up that we shouldn't be carrying out maintenance on the generators whilst they are switched on and potentially live. Reason being, if (in the unlikely event) you were to lose mains whilst on top of the generator checking the water, checking the oil, or even checking the battery acid levels, injury could occur. The only solution we have come up with so far is to isolate 1 generator at a time whilst carrying out the maintenance checks. Only problem being, is that one generator alone will not carry the full load of the hospital and would therefore trip out on overload. Unless there is some sort of set up that can be installed on the BMS to prevent this from happening I'm all out of ideas. Any suggestions or anyone else had a similar experience? Look forward to your comments.