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EMD AEM-7: History & Measurement

The EMD AEM-7 is a twin-cab four-axle B-B 7,000 hp (5.2 MW) electric locomotive manufactured by Electro-Motive Division (EMD) and ASEA between 1978 and 1988. It is a derivative of the Swedish SJ Rc4 designed for passenger service in the United States. Amtrak purchased 54 for use on the Northeast Corridor and Keystone Corridor while commuter operators…

Language: English [EN]
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EMD AEM-7 topic overview

The analysis highlights History and Measurement as prominent areas in the source structure around EMD AEM-7.

Related topics
73
Source areas
4
Connected nodes
77
Extracted relationships
70
Related term clusters
32
Bridge connections
77

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

History · 38 topics
Design · 13 topics
Overview · 13 topics
Background · 9 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Build date
1978–1988
Builder
General Motors Electro-Motive Division ASEA
Career
Amtrak · MARC · SEPTA · Amtrak: 900–953 · MARC: 4900–4903
Configuration:
​
Current pickup
Dual pantographs
Disposition
Two Amtrak units sold to TTCI, two Amtrak units sold to Caltrain, four Amtrak units preserved, all MARC units stored, remainder Amtrak and all SEPTA scrapped

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Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Background

Design

History

For the semantics nerds

You can skip this section if you’re here for content ideas and keyword inspiration.

Advanced semantic analysis

How EMD AEM-7 connects Entity context

The extracted context around EMD AEM-7 shows recurring relationship patterns in the source. For example, EMD AEM-7 → 2016 (Amtrak), 2017 (MARC), 2018 (SEPTA), Amtrak, Amtrak: 900–953, MARC, MARC: 4900–4903, SEPTA, SEPTA: 2301–2307 Another extracted example is EMD AEM-7 → 1,000 kW (AC), 12 kV 25 Hz AC, 12.5 kV 60 Hz AC, 25 kV 60 Hz AC, 500 kW (DC), Alstom 6 FXA 5856 (AC), ASEA LJH 108-5 (DC), Overhead line:. Use these groups to spot repeated connection types before inspecting the individual relationships.

EMD AEM-7

Top relations

Career · 9
EMD AEM-7 → 2016 (Amtrak), 2017 (MARC), 2018 (SEPTA), Amtrak, Amtrak: 900–953, MARC, MARC: 4900–4903, SEPTA, SEPTA: 2301–2307
Specifications · 8
EMD AEM-7 → 1,000 kW (AC), 12 kV 25 Hz AC, 12.5 kV 60 Hz AC, 25 kV 60 Hz AC, 500 kW (DC), Alstom 6 FXA 5856 (AC), ASEA LJH 108-5 (DC), Overhead line:
Electric system/s · 4
EMD AEM-7 → 12 kV 25 Hz AC, 12.5 kV 60 Hz AC, 25 kV 60 Hz AC, Overhead line:
Numbers · 3
EMD AEM-7 → Amtrak: 900–953, MARC: 4900–4903, SEPTA: 2301–2307
Operators · 3
EMD AEM-7 → Amtrak, MARC, SEPTA
Retired · 3
EMD AEM-7 → 2016 (Amtrak), 2017 (MARC), 2018 (SEPTA)
Head end power · 2
EMD AEM-7 → 1,000 kW (AC), 500 kW (DC)
Traction motors · 2
EMD AEM-7 → Alstom 6 FXA 5856 (AC), ASEA LJH 108-5 (DC)
Build date · 1
EMD AEM-7 → 1978–1988
Builder · 1
EMD AEM-7 → General Motors Electro-Motive Division ASEA

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

amtrak locomotives septa locomotive aem-7s service aem-7 electric marc northeast passenger 2018 corridor alstom power traction 2017 ac two siemens

EMD AEM-7 relationships Subject–Predicate–Object triples

TTTA extracted 70 structured relationships around EMD AEM-7. Examples in this analysis include EMD AEM-7 → Build date → 1978–1988 and EMD AEM-7 → Builder → General Motors Electro-Motive Division ASEA. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
EMD AEM-7Build date1978–19881.00infobox
EMD AEM-7BuilderGeneral Motors Electro-Motive Division ASEA1.00infobox
EMD AEM-7CareerAmtrak1.00infobox
EMD AEM-7CareerMARC1.00infobox
EMD AEM-7CareerSEPTA1.00infobox
EMD AEM-7CareerAmtrak: 900–9531.00infobox
EMD AEM-7CareerMARC: 4900–49031.00infobox
EMD AEM-7CareerSEPTA: 2301–23071.00infobox
EMD AEM-7Career2016 (Amtrak)1.00infobox
EMD AEM-7Career2017 (MARC)1.00infobox
EMD AEM-7Career2018 (SEPTA)1.00infobox
EMD AEM-7Configuration:​1.00infobox
EMD AEM-7Current pickupDual pantographs1.00infobox
EMD AEM-7DispositionTwo Amtrak units sold to TTCI, two Amtrak units sold to Caltrain, four Amtrak units preserved, all MARC units stored, remainder Amtrak and all SEPTA scrapped1.00infobox
EMD AEM-7Electric system/sOverhead line:1.00infobox
EMD AEM-7Electric system/s25 kV 60 Hz AC1.00infobox
EMD AEM-7Electric system/s12.5 kV 60 Hz AC1.00infobox
EMD AEM-7Electric system/s12 kV 25 Hz AC1.00infobox
EMD AEM-7First runMay 9, 1980 (Amtrak)1.00infobox
EMD AEM-7Head end power500 kW (DC)1.00infobox
EMD AEM-7Head end power1,000 kW (AC)1.00infobox
EMD AEM-7Height14 ft 9.5 in (4.51 m)1.00infobox
EMD AEM-7Last runDecember 1, 2018 (SEPTA)1.00infobox
EMD AEM-7Length51 ft 1+25⁄32 in (15.590 m)1.00infobox
EMD AEM-7LocaleNortheast United States1.00infobox
EMD AEM-7Loco weight101 short tons (90 long tons; 92 t)1.00infobox
EMD AEM-7Maximum speed125 mph (200 km/h)1.00infobox
EMD AEM-7ModelSJ Rc1.00infobox
EMD AEM-7MU workingYes, AAR1.00infobox
EMD AEM-7NicknamesToasters; Meatballs1.00infobox

Related concept clusters Related term clusters

The concept neighborhoods around EMD AEM-7 bring nearby vocabulary together. In this analysis, examples include Asea, Electric and Line. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • amtrak
    • Locomotives
    • Aem-7s
    • Passenger
    • Trains
    • Alstom
    • Two
    • Marc
    • Locomotive
    • Electric
    • Septa
    • Operators
    • Retired
  • electric locomotive
    • Passenger
    • Locomotive
    • Locomotives
    • Asea
    • Marc
    • Line
    • Alstom
    • Railroad
    • Traction
    • Septa
    • Northeast
    • Amtrak
  • northeast corridor
    • Northeast
    • Operators
    • Marc
    • Service
    • Total
    • Ac
    • Line
    • Ordered
    • Locomotives
    • Septa
    • Aem-7s
    • Seven
  • marc
    • Septa
    • Retired
    • Line
    • Northeast
    • Operators
    • Siemens
    • Total
    • Seven
    • Alstom
    • April
    • Locomotive
    • Service
  • electric multiple units
    • Locomotive
    • Locomotives
    • Passenger
    • Asea
    • Power
    • Line
    • Alstom
    • Railroad
    • Traction
    • Marc
    • Dc
    • Northeast
  • septa
    • Seven
    • Traction
    • Aem-7s
    • Retired
    • Total
    • Locomotive
    • Service
    • Line
    • April
    • Sj
    • Dc
    • Locomotives
  • EMD AEM-7
    • Asea
    • Electric
    • Line
    • Siemens
    • Ge
    • Alstom
    • Marc
    • Septa
    • Aem-7s
    • Emd
    • Total
    • Locomotive
  • emd aem-7
    • Asea
    • Electric
    • Line
    • Locomotive
    • Siemens
    • Ge
    • Amtrak
    • Alstom
    • Marc
    • Septa
    • Aem-7s
    • Emd

Connections between topic areas Semantic bridges

For EMD AEM-7, one of the stronger structural bridges in this analysis connects EMD AEM-7 with History. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
EMD AEM-7 — History · splits 39 ⟂ 39
EMD AEM-7 — Overview · splits 64 ⟂ 14
EMD AEM-7 — Design · splits 64 ⟂ 14
EMD AEM-7 — Background · splits 68 ⟂ 10

Map overview Semantic statistics

EMD AEM-7

Nodes78
Edges77
Triples70
Avg. degree1.97
Density0.025641
Components1

Source & methodology

TTTA analyzes the structure around EMD AEM-7 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History & Measurement, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — EMD AEM-7 · EN edition · Analysis: TopicsToTalkAbout

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