Infobox Locomotive

caption= HHP-8 661 at BWI Rail Station
poweroutput=8,000 hp
builder=Bombardier Transportation, Alstom
railroad=Amtrak and MARC
roadnumber=AMT 650-664;
MARC 4910-4915
electricsystem=11,000 V AC, 25 Hz
11,000-13,500 V AC, 60 Hz
25,000 V AC, 60 Hz
topspeed=125 mph (201 km/h) for Metroliner and Regional
110 mph (177 km/h) for long-distance trains
collectionmethod=Overhead AC with dual pantographs
nicknames = Rhinos
locale = Northeast Regional
The HHP-8, is a double-ended electric locomotive manufactured by a consortium of Bombardier and Alstom. HHP-8 stands for High HorsePower 8000. The HHP-8s replaced the GE E60s and supplement the aging AEM-7s on Amtrak's Northeast Corridor, though some of the AEM-7s have been upgraded to AEM-7ACs to match the hauling power of the HHP-8s. The locomotive can haul Amfleet cars at speeds of up to 125 mph. They are sometimes referred to by train crews as "Rhinos".

Maryland Rail Commuter (MARC) also operates HHP-8s on its Penn Line between Perryville and Washington, DC.

The locomotives are visually similar to Acela power cars, but they have noticeably shorter and stubbier noses. The HHP-8s are equipped with visible couplers and HEP receptacles at both ends. These are hidden by covers on the front end of Acela power cars during normal operations.

During testing of the equipment between 1999 and 2000 the locomotives experienced a number of problems related to the differing power supply voltages used over the Northeast Corridor. They were designed to automatically switch between voltages, but this feature malfunctioned in testing. Cracking in the trucks was identified as a potential problem during testing. Safety officials at the time felt that potential crack development could be identified before failure with proper inspection.

In August 2002, the HHP-8s were also briefly removed from service when the brackets that connected truck dampers (shocks) to the locomotive car bodies ("yaw dampers") were found to be cracking. The locomotives were then returned to service when a program of frequent inspections was instituted. The damper brackets have since been redesigned and the old brackets replaced with the newer design.

External links

* [http://www.on-track-on-line.com/amtkrinf-hhp8date.shtml The HHP-8 Conditional Acceptance Dates by On Track On Line]
* HHP-8 Photos at [http://www.railpictures.net/showphotos.php?locomotive=Bombardier/Alstom%20HHP-8 Railpictures.net] and [http://www.rrpicturearchives.net/locoList.aspx?mid=686 RR Picture Archives]
* [http://hebners.net/amtrak/amtACELAHHP8 Amtrak Photo Archives]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • HHP — is a three letter abbreviation (TLA) which may refer to:*HHP ndash; 6 ndash;Hidroxymethyl ndash;7,8 ndash;diHydroPterin, Formula: C7 H9 N5 O2*HHP, Inc. (former abbreviation of Hand Held Products, Inc.)*Health and Human Performance*HTML Help… …   Wikipedia

  • HHP-8 — Bombardier HHP 8 Caractéristiques techniques locomotive électrique Série Bombardier HHP 8 Entreprise ferroviaire Amtrak et Maryland Rail Commuter Service (MARC) Constructeur Bombardier Numérotati …   Wikipédia en Français

  • HHP — College of Health and Human Performance (Academic & Science » Universities) *** Holistic Health Practitioner (Medical » Hospitals) * Hand Held Programmer (Computing » General) * Hadiputranto Hadinoto & Partners Law Firm (Community » Law) *… …   Abbreviations dictionary

  • HHP — Honolulu Heart Program …   Medical dictionary

  • HHP — Hong Kong, China internationale Flughafen Kennung …   Acronyms

  • HHP — Hong Kong, China internationale Fughafen Kennung …   Acronyms von A bis Z

  • HHP — abbr. Hand Held Programmer …   Dictionary of abbreviations

  • HHP — • High holding power (anchors) …   Maritime acronyms and abbreviations

  • HHP — • Honolulu Heart Program …   Dictionary of medical acronyms & abbreviations

  • Bombardier HHP-8 — HHP 8 (Amtrak /MARC) La HHP 8 661 à BWI Rail Station …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.