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SAFETY ASPECT

Safety Aspect:

These bulbs indicate how dangerous certain HID systems may be.

The non insulated outer electrode (D1S/D2S) can easily be touched by mistake or accidentally be connected to surrounding environment.

  In Xenlight Ballast, the outer bulb electrode is connected to the internally capacitive midpoint of its relative small charging capacitors. There is no direct galvanic connection to the high voltage output of the DC-DC converter.

  Additionally, Xenlight ballast drives the bulb with high frequency output, which is so high that due to the HF skin effect the high frequency AC current does not penetrate the human body. Generally, electricity does not kill by its electrical power, it shocks the human body and stimulates the heart muscle which causes the death; use of high frequency prevents this.

  Xenlight's ballast starts the bulb with 14KHZ and then drops down to 4.5KHZ while others start at less then 400HZ.

This adds a safety advantage compared to fullbridge output power stages and low frequency bulb operation of our competitors. Xenlight is the only one who can use this principle operated from low voltage DC supplies (car battery, etc.) because of the high efficiency of our ballast. This is why we have a totally different solution to all our ballast competitors in the HID world for automotive and battery powered ballasts.

Safety solutions of Xenlight
   for dangerous situations:

Ballast is in operation mode:

• Bulb is broken – unit shuts down totally due to incorrect lamp current or shorted lamp circuit

• Touching the outer electrode of the bulb – you might get the possible electric stimulation, but in our ballast it is far from the dangerous frequency of 50HZ which is the most dangerous frequency to the human body.

Ballast is not in operation mode:

• Turn on the ballast while no bulb is connected – the ballast turns itself off in less then 0.5 second.

• Turn on the ballast while the bulb is connected but broken or the outer electrode connected to the ground – the ballast turns itself off in less then 0.5 second. In case of a short between both electrodes (the most unlikely) the ballast turns itself off in seconds.

Generally:

• Any failure keeps the ballast switched off like a dead unit without any automatic self reset.

• Because electricity can not be seen by eyes – electric potential is removed totally if the correct lamp power can not be established.

• External processor control detects operation failures by our remote control line and determines whether or not another start attempt is allowed.

• Our ballast plastic housing reduces the need of additional insulation in embedded metal application to increase the general safety aspect.