Northwest Rail Electric model # NW-DCLT-BP-3
See where our equipment is located on a typical passenger car
The NW-DCLT-BP-3, pictured above, is one example of a product designed to meet the needs of a number of car operators. In this particular case, all DC systems on the car are 12 volt. There are three battery systems: marker lights, generator starting and emergency lighting. These are isolated when they are being used, but when the battery charger is operating all of the batteries undergo charging. The separation of the battery systems allows the critical safety systems (marker lights and emergency lights) to operate until the battery is completely discharged without discharging the generator starting battery. This system also includes a number of dircuit breakers for the various DC loads, and a volt meter will show the battery voltage when the button on the panel is pressed.
The NW-DC-100, pictured above, is very similar to the NW-DCLT-PB-3. However, it features a hinged enclosure rather than a panel configuration.
This custom DC control system includes a number of solid state DC-DC converters for taking 72 volts DC and converting it into various other voltages for use on the car for 12 volt lighting, 32 volt control systems for a previously existing 32 volt DC system, 24 volt DC for a control system that was unavailable in any other voltage, and 12 volts DC for several low voltage systems. The panel also includes a number of labeled circuit breakers. The top of the panel includes the car's 120 and 208 volt AC circuit breaker panel.
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