Diesel Generators before Installation things to check
Things that you need to check before choosing your automatic power protection generator system.
Most important – you must ensure that the size and capacity are fit for purpose.
Hopefully by following these points, you will avoid making a wrong decision.
Diesel generator installation projects are a major cost for any business.
1. Most generators will only support 65% of their capacity upon startup
When selecting a generator , will it actually support the load without falling over?
Whilst any generator will be able to run at up to its full rated capacity, it can’t take the full load in one hit.
All standby diesel generators can only accept approximately 65% of their capacity upon startup from cold.
For instance, over size the generator so that the full initial load is no more than 65% of what the generator can accept upon startup.
Alternatively, you can install load shedding within your mains LV panel. By means of motorised switches and shunts, an automatic mains failure panel (AMF) can open designated breakers every 15 seconds ,which will cascade the load onto the generator. Implementation of a step load installation will therefore allow the generator to take the entire load without “falling over”. But, beware, never assume the power protection can handle any building load.
Emergency standby generators that are fully installed will automatically start up when a power outage occurs.It’s therefore vitally important to ensure that you identify the maximum load spike of your building.You should choose a generator that is at least 40% larger then your peak load of the last 12 months.Call Power Continuity for a Free Site Survey before making any decision.
2. Generators should not run constantly at low load
Now you have an installed emergency standby generator, what’s next?
Never run generators constantly on low loads, for example ,less than 30%, as this causes wet stacking which will permanently damage the engine.
Of course it is difficult to prevent low loads at times , such as, a power cut at night when the building load is minimal.
Generator systems need to be correctly specified, to be able to handle the correct load factor of your building.
Otherwise, it won’t be able to support the load, when called upon in anger.
But it’s better for the generator to have larger loads , when continuously run, rather than bare minimum.
Take our advice.
Every generator must be load-banked at least once a year for 4 hours, to prevent wet stacking buildup.
Load-Banking up to the maximum capacity of the generator will remove any unburnt fuel deposits caused by wet stacking.
Thereafter, the installation will be as good as new once more and ready for action.
3.Generators should be tested regularly
We’re stating the obvious and yet it’s still surprising how many businesses fail to service their generators.
Yes it may seem like an additional expense that you’ve not budgeted for.But what is the point of a generator if you are not going to maintain it?
Brand new generators new regular service & maintenance to extend their life for ups to 35 years.
When you have a power cut, you want to have confidence in your system knowing that it will start up and protect your business.
The answer to peace of mind is to ensure you have a regular service and maintenance contract in force.
Secondly, you must test your generator weekly OFF load
Thirdly, once every month test your diesel generator with building load.
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