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Company Profile |
Pedestrian Pushbutton Isolator |
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2-channel and 4-channel models |
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NEMA TS2 specification for pedestrian isolation |
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12VAC to pushbuttons |
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Microprocessor-based |
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Rack-mount |
The Pedestrian Pushbutton Isolator (Ped Isolator) protects pedestrians and traffic controllers form accidental exposure to hazardous voltages when a pole is damaged or a pedestrian pushbutton is defective. Pole damage may allow 120VAC from an intersection's light fixtures or other devices to contact the pushbutton switch, which may possibly result in damage to a traffic controller. Similarly, a defective pedestrian pushbutton may result in an electrical shock to pedestrians.
To decrease these possibilities, Fortran has developed the microprocessor-based Ped Isolator. This card is available in two-channel and four-channel versions and is typically rack-mounted inside a traffic controller cabinet. The Ped Isolator provides inexpensive protection (less than 5% of the cost of a typical controller) by supplying 12VAC to the pedestrian pushbutton circuit, and optically isolating the pushbuttons from the traffic controller.
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information:
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