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To achieve the promise of a totally autonomous environment
for computer equipment, power must be fed to the building in the event of a failure from the electrical
supplier. UPS systems alone cannot provide a sustained level of
protection, and will only provide short term support until their batteries are
exhausted.
The generator is a diesel powered system able to supply enough power to cover
the entire site, all the heavy duty air conditioning, recharge the UPS batteries
and have an additional 50% margin. With a full tank of fuel, the generator
can support the entire site for up to 24 hours when fully loaded and much longer
when loaded less. In addition, the generator system can be refueled whilst running,
giving the ability to run indefinitely without power from the
electrical company.
The
generator system is controlled by the AMF panel and will deliver 3 phase, full
load electrical power within 30 seconds of a mains failure. Generator startup is
automatic and involves no human intervention. The generator itself is
presented with a control panel that enables engineers to easily identify faults
or problems, monitor generator status (such as oil pressure, engine temperature,
fuel level, RPM, amps, etc.) and control the operation of the
generator.
A routine test procedure is run every 7-10 days on the generator
system by running it up to maximum system load for 30-60 minutes. This
regime of testing ensures that the backup systems are in
working order should they ever be called upon. If a fault is detected
during the testing period, our engineers can quickly revert back to mains power
without any affect on the computing facility.

As
the generator engine is specifically designed to operate in all conditions,
certain modifications are made by the manufacturer. In particular, the
generator continually circulates warm water around the engine to prevent
freezing and to also improve startup times.
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