The Dimmer Panel comprises of Electronic
Dimmer Modules, Filters, Power Supply, ,
Patch Panel,etc. designed and manufactured
specifically for entertainment lighting
The dimmer panel is a small, sleek wall
mounted panel with built in patch panel
capable of handling large power.
The panel shall be properly treated, primed
and finished in fine texture.The Dimmer
Panel is divided physically in three parts:
Power Handling Section, Patch Panel, Electronic
Control Section. These sections are physically
The size of the Panel is 900 W x 1000ht
x 100 depth.The Front of the Panel shall
have MCB’s protection, for both incomer
supply and outgoing circuits, Patch pnel
with 24 sockets x 24 plugs.
The dimmer panel is naturally ventilated
and cooled. This has been achieved by proper
design and computer modeling, ensuring air
flow path is not obstructed.
The natural ventilated panel ensures that
the system shall maintain the temperature
of all components at proper operating levels
with dimmers at any load, providing the
ambient temperature of the dimmer room is
within 0 to 35°C degrees C.
The Dimmer Rack shall operate in an environment
with a relative humidity of 10-80%, non-condensing.
Load terminations are clearly numbered at
the Elmex Terminal Bay with the Dimmer Circuit
Number. Neutral and ground shall be Terminated
on the Bus Bar Provided. Control Signal
terminations shall be pre-wired.
The supply voltage and frequency of the
pack shall be:
Three phase, 230/440V, 50Hz / 60 Hz
Maximum connected load of the rack shall
Each dimmer module shall be protected by
a thermal magnetic circuit breaker.
The Rack sha ll be powered by an incomer
three pole magnetic circuit breaker.
The dimmer control electronics based on
analog ramping circuits
Control inputs shall have corresponding
terminal connection points through a Dtype
connector mounted in the Panel.
The dimmers shall be factory wired.
One thyristor module shall be provided for
each dimmer, rated for the dimmer power
rating. Each thyristor module shall be easily
field replaceable. One RF Filter choke for
each dimmer shall be mounted along with
One three pole MCB as incomer, one circuit
breaker for each dimmer is mounted to the
front panel and provides for protection
of individual dimmers.
Dimmer electronics shall be solid state.
They shall use a single thyristor power
device. The full load of the circuit is
to be carried and controlled by each thyristors.
The circuit breaker shall be rated for tungsten
loads having an inrush rating of no less
than 20 times normal current and shall disconnect
the power to the dimmer module before damage
can be done to the dimmer power components.
The circuit breakers shall be rated for
100 percent switching duty applications.
Each dimmer module shall have an integral
inductive filter to reduce the rate of current
rise time resulting from the SCR switching
on. The filter shall limit objectionable
harmonics, reduce lamp filament sing and
limit the radio frequency interference on
line and load conductors.
Stage dimmers shall have a rise time of
not less than 100 microseconds
The dimmer module shall be capable of "hot
patching" cold, incandescent loads
up to its full rated capacity without malfunction
with the control signal at full ON.
The dimmer output levels shall be regulated
for incoming line voltage variations. Dimmers
will maintain output RMS voltage within
+/-2% with changes in load from 100 watts
to full rated load at any point on the dimming
Output waveform is a variable conduction
angle 230VAC sine wave.
Output response time (from control signal
change) is less than 0.1 seconds.
The power efficiency of the dimmer is a
minimum of 95% at full load.