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Installation Instructions
Simply calculate the load for each channel, add
all the loads together and this will be the size
of the supply you require. Always calculate the
supply assuming all channels working at full
output simultaneously.
For a Source Controller being fed from a 3-Phase
supply, calculate the load on each phase and
fit externally to the Controller, a suitably rated
3-pole circuit breaker. Do not apply power until
you are certain that a good Neutral connection is
present at the Source Controller.
Sample supply requirement calculations:
Example 1 - Resistive loads connected to a
4 channel 5A Inductive Source Controller.
(SCI0405S)
Channel 1 load is 300Watts
Channel 2 load is 150Watts
Channel 3 load is 1000Watts
Channel 4 load is 500Watts
Total connected load = 1950Watts
(All loads in this example are resistive or have
unity power factor).
For the this example the minimum size of the
supply required is: 1950W/230V = 8.5Amps
Therefore, the unit should be fed with a supply
of
at least 10Amps.
As the individual load channels are protected by
5Amp MCB’s a supply capable of delivering
more than 10Amps could be used, but it is
recommended that it should not exceed the
rating shown on the label fitted inside the door.
Example 2 - Fluorescent lamps with dimmable
HF ballasts connected to a 4 channel 10A
High Frequency Ballast Source Controller.
(SCH0410S)
Channel 1 load is 8 x 58 Watt tubes
Channel 2 load is 16 x18 Watt tubes
Channel 3 load is 10 x 26 Watt PL lamps
Channel 4 load is 5 x 36 Watt tubes
Total connected load = 1192Watts
(All loads in this example have unity power
factor).
For this example the minimum size of supply
required is: 1192W / 230V = 5.18 Amps
Therefore the unit should be fed with at least
6 Amps supply.
How?
Remove the unit cover to gain access to the fixing
holes.
Four screws hold on the cover of the Source
Controller; two are visible from the front and two
are visible only when the MCB cover door is opened.
There is no need to remove the MCB door.
Four fixings holes are provided allowing for fixings
up to 6mm diameter.
4 Channel version shown (SCI0405S)
Supply and Load Connections
Size of supply
The size of the supply required to the Source
Controller is dependent on the power requirements
of the loads connected to it.
(inside door)
(inside door)
INTELLIGENT CONTROLS
Содержание SCI0405
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