Generator Power Ratings
Prime Power
This is the power rating most commonly applied to
diesel generators and is used in our data sheets and
price lists. This is the power available at variable load if
there is no main power supply. Since most applications
do operate with a variable load, this rating can be
chosen even if the generator is operating 24 hours
per day. An overload of 10% is permitted for one hour
in every twelve hours operation.
Standby Power
This is the power available at a variable load in the
event of a power supply failure with a maximum
utilisation of 500 hours per year. No overload is permitted.
This rating is most frequently chosen when the generator
is used as standby to a mains power network.
Base load Power
This is the power available for continuous full load
operation. An overload of 10% is permitted for one hour
in every twelve hours operation.
Since it is unusual for a generator to operate at a

continuous (non-variable) power output, this rating
is not often selected.

Base frame &Fuel Tank Design
Minimum volume means cheapest sea freight.
Forest City base frames are designed so that overall
length and width does not exceed the profile of the
engine and alternator assembly.This minimises
the cost of sea freight and maximises the quantity
of generators that can be loaded into a shipping
container.
We know how inconvenient it can be to source
a fuel tank and all the necessary fuel pipes and
fittings that you require.Where space permits,we
overcome this problem by building a heavy-duty
sheet steel base frame which is used to serve as a
fuel tank with a running capacity of up to 16 hours
at full load.The tank includes fitted fuel lines
strengthened with steel wire braiding,drain plug,
filler cap and a dial type contents gauge.The fuel
tank capacity and load fuel consumption of each
model is shown on the Forest City specification
sheet.If the standard fuel tank is not large enough,
then a manual or automatic transfer system can be
provided to fill from a bulk storage tank.
Bonded rubber anti-vibration mountings are
usually fitted between the engine/alternator
assembly and the base frame.This allows
the generator to be used on an uneven surface.
The anti-vibration mountings may alternatively
be fitted between the base frame and a
concrete plinth.
The control panel is normally fitted above the
alternator on anti-vibration mountings.Depending
on the size of the circuit breaker,it may be fitted
in the control panel or a separate set mounted
housing.

What Exhaust Fittings do I need?
Every installation is different. This makes it impossible
to provide all the exhaust pipes and fittings that may be
required. Each generator is supplied with a matching
industrial grade silencer with suitable flanges and a
flexible section to connect between the engine outlet
and the silencer.
Residential grade silencers are available as an

optional extra. It should be noted that there is little
advantage in providing a whisper quiet exhaust unless
steps are taken to dampen the mechanical noise of
the engine to a similar level.
Care must be taken to ensure that exhaust layouts

comply with the engine manufacturers recommendations.

Heavy Duty Batteries
All generators are fitted with Lucas or equivalent
heavy-duty dry charged low maintenance lead acid
batteries complete with a set mounted carrier and
heavy-duty battery leads and clamps. International
regulations require that batteries must be dry charged
for export. After filling with electrolyte, they are ready
for use.
Nickel-cadmium batteries are available in situations

where extra-long life is required.

What spares do I need?
When ordering your new generator, it is a good idea to
buy some spare parts at the same time. This will guarantee
that you have genuine spares at UK prices. We provide
very comprehensive recommended spares kits for 1,000
hours, 2,500 hours, 5,000 hours and 10,000 hours.
It should only be necessary to replace filters and vee belts
during the first 5,000 hours. The automatic voltage regulator
and key start/autostart modules are the most critical
components because a failure could render the generator
useless. Although these components are generally very
reliable, it is a good idea to keep an emergency backup.

Export packing
In order to preserve the appearance of the generator and
to prevent loose items being lost, every generator is  shrink wrapped in heavy duty polythene.
Our experience has shown that it is no longer cost effective to

pack generators in wooden cases as most equipment is
containerised. On very rare occasions, customers do
experience some cosmetic damage, but this bears no relation
to the cost of a wooden case.

 

 

 

 

 

 

 

 

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