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The 4820 is an innovative
controller designed to power four or eight 28-volt 4528 Hi-g PAR-46
light fixtures from 120VAC power. The result is very high
illumination for high-speed film and video applications, and it's
ideally suited for Hi-g applications and explosive over pressure
environments.
Unlike traditional AC light sources, total power
consumption is low, as one 20-amp. 120VAC circuit powers four
450-watt 28-volt 4528 lamps connected in series. The 4820 has two
solid-state controller channels, each controlling 4-lamps. That's a
total of more than two million candlepower, with SPOT lamps,
calculated to 50% of center beam intensity with a total power
consumption of 32 amps!
The 4840 model accepts 230/240VAC power and
handles eight 4528 lights from a single controller circuit. Total
power consumption is 16 amps at the same illumination level stated
above.
Each 4800 series controller has a low voltage
dimmer circuit with linear ramp up from 0 to full AC lamp
voltage. The dimmer eliminates the initial 80-amp current
surge when instant full power is applied.
A recent upgrade
incorporates a control circuit that allows users to trigger 4820 and
4840 controllers from a remote location or a sequencer to instantly
ramp up the lights to full brightness. The circuit accepts a
continuous 5 to 10 volt DC lever or a continuous contact closure.
Remote control is useful in hazardous or explosive environments,
test cells, vacuum chambers and related situations where personnel
safety is an issue.
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There are several benefits when using dimmer
control, including extended lamp life. When greater illumination
levels are required 4800 series controllers also power 28-volt
PAR-64 Hi-g 600-watt lamps that doubles the 4528's beam candle power
output.
4800 series controllers combined with eight 4528
light fixtures result in a small and lightweight system. It produces
exceptionally high illumination levels with low power consumption at
a very modest cost.
with Remote Input
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