ZCS Technology® - Not only improving, but drastically raising the bar.
ZCS Technology- Zero Cross Switching Technology protects against high In-Rush currents, particularly found in LED Luminaries.
By tracking the AC line voltage, this microprocessor controlled technology switches the luminaire at the most optimal time. This switching point is calculated to minimize inrush current, “Soft start” lighting electronics and provide extended life and reliably to the Photocontrol circuitry.
What is Inrush current?
Inrush current is the maximum amount of instantaneous current drawn by an electrical device when first powered on. High inrush currents are found in all types of lighting applications, from incandescent lamps to LEDs. When switching a 1000 watt incandescent lamp (industry standard rating) inrush current in excess of 90 amps can be seen until the filament warms and resistance increases. LED fixtures use drivers; these drivers contain switch mode power supplies. A typical switch mode supply will have very large capacitors; these capacitors can charge very quickly drawing large amounts of current, over 65 amps for a 90 watt LED.
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150 Watt LED Fixture being switched using traditional methods. The Blue trace represents AC line Voltage and the Green Trace represents current. More than 100 amps of inrush current is being switched by the photocontrol.
Switching with ZCS Technology®
150 Watt LED Fixture being switched using ZCS Technology. The Blue trace represents AC line Voltage and the Green Trace represents current . Less than 10 amps of inrush current is being switched by the ZCS equipped photocontrol.