The YPHP Yard Power Unit

From Northwest Rail Electric

• Plug the HEP Control Loop Jumper hanging from the YPHP unit into the receptacle side of the HEP trainline on the end of the passenger car.

• Plug the 480 volt, three phase HEP system trainline into the YPHP using the HEP system plugs.

• If the top (yellow) button's lamp turns on, then the trainline control loop is complete, and it is safe to start feeding power to the train.

• Press the top (yellow) button to start feeding power.

• The bottom (red) light turns on when power is being fed to the train.

• To stop feeding power to the train, press the bottom (red) button.

The YPHP is equipped with a three phase power monitor that will shut off the power feed in the event of phase imbalance, or improper phase rotation.

Options:

• Ground fault detection - required for units above a certain size, but safety should always be of highest concern. (The NW-YPHP shown at right includes exterior test and reset switches relating to the ground fault protection system, as well as other controls and indicators.)

• Stainless steel enclosure.

• Dual yard power units in one enclosure. (The NW-YPHP shown at right is such a dual unit.)

• Various contactor brands or circuit breaker brands, depending on customer requirements.

• Main High Voltage Circuit breaker may be mounted in the enclosure, or the circuit breaker located in the breaker panel that feeds the yard power unit may be deemed sufficient, depending on location and local requirements.

• Built-in transformers and 120 volt receptacle for operating standard power tools or other equipment from the yard power unit.

• Main High Voltage Circuit Breaker inside NW-YPHP may be entirely within the enclosure, or have exterior switching of various types, depending on local requirements. (The NW-YPHP unit shown at right has an exterior-accessible switch for each circuit breaker.)

• NW-YPHP control voltage circuit breaker may be located in weatherproof exterior access point, or inside unit, depending on local requirements. (The NW-YPHP unit shown at right has an exterior accessible control voltage circuit breaker, which is visible to the left of the indicators and switches.)

• Large roof-top indicator light mounted on top of enclosure so that feed indicating is visible from other end of yard. (There are two such large rooftop lights on top of the NW-YPHP shown at right.)

• Power feed on left or right side of enclosure, depending on required enclosure size for the required output. (The NW-YPHP unit shown at right has HEP power feed on the right and left side of the enclosure.)

• Wall mount or concrete pad mount enclosure, depending on required enclosure size for the required output. (The NW-YPHP unit shown at the top of this page is a wall-mount enclosure, while the one shown at right is designed to be mounted on its own concrete pad.)

• Enclosure heater, ventilation and insulation to meet the needs of the local climate and requirements of customer.

Custom Variations:

Related Products from Northwest Rail Electric:

• Electrical Locker Packages for converting a passenger car electrical system to HEP

• Generator Controls for running passenger car generators and providing power to the HEP system

• Evaporator Units and Under-Car Condensers for those converting their railroad air conditioning systems to run on HEP.

• Under-Car Diesel Generators for providing power to the HEP trainline.

• HEP Parts including HEP Connectors for those adding HEP.

• Rubber Tube Diaphragms for those upgrading passenger cars to modern car end standards.

• Railroad Grade Wire for those upgrading or replacing railroad car electrical wire.

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