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EMD SD45: Standards & Measurement

The SD45 is a six-axle diesel-electric locomotive class built by General Motors Electro-Motive Division between 1965 and 1971. It has an EMD 645E3 twenty-cylinder engine generating 3,600 hp (2,680 kW) on the same frame as the SD38, SD39, SD40, and SDP40. As of 2023, most SD45s have been retired, scrapped, or rebuilt to SD40-2 standards.

Language: English [EN]
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EMD SD45 topic overview

The analysis highlights Standards and Measurement as prominent areas in the source structure around EMD SD45.

Related topics
54
Source areas
5
Connected nodes
63
Extracted relationships
55
Concept neighborhoods
31
Bridge connections
63

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.

Preservation · 18 topics
Design · 17 topics
Overview · 9 topics
Accidents and incidents · 7 topics
Rebuilds · 3 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
Dec. 1965 – Dec. 1971
Builder
General Motors Electro-Motive Division (EMD)
Configuration:
​
Cylinders
20
Engine type
V20 diesel
Generator
AR10B

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

Design

Accidents and incidents

Rebuilds

Preservation

Sources

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How EMD SD45 connects Entity context

The extracted context around EMD SD45 shows recurring relationship patterns in the source. For example, EMD SD45 → Company, EF636-1, EF636-2, EF636-3, EF636-4, EF636-5, EF636-6, EF636LR-1, EF636LR-3, EF636R-2, EMD SD45R, Most, Sacramento Shops, SD45, Southern Pacific, Southern Pacific's M-99, The Southern Pacific Transportation Another extracted example is EMD SD45 → Canadian Pacific Railway, EMD SD40, EMD SDP45, In, Knudsen, Morrison, SD40M-2s, SD40s, SD45s, Southern Pacific, Southern Pacific Transportation Company, The. Use these groups to spot repeated connection types before inspecting the individual relationships.

EMD SD45

Top relations

related to SD45R · 17
EMD SD45 → Company, EF636-1, EF636-2, EF636-3, EF636-4, EF636-5, EF636-6, EF636LR-1, EF636LR-3, EF636R-2, EMD SD45R, Most, Sacramento Shops, SD45, Southern Pacific, Southern Pacific's M-99, The Southern Pacific Transportation
related to SD40M-2 · 12
EMD SD45 → Canadian Pacific Railway, EMD SD40, EMD SDP45, In, Knudsen, Morrison, SD40M-2s, SD40s, SD45s, Southern Pacific, Southern Pacific Transportation Company, The
related to SD45u · 5
EMD SD45 → EMD SD45u, Santa Fe Railway, The Atchison, They, Topeka
Build date · 1
EMD SD45 → Dec. 1965 – Dec. 1971
Builder · 1
EMD SD45 → General Motors Electro-Motive Division (EMD)
Configuration: · 1
EMD SD45 → ​
Cylinders · 1
EMD SD45 → 20
Engine type · 1
EMD SD45 → V20 diesel
Gauge · 1
EMD SD45 → .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .de…
Generator · 1
EMD SD45 → AR10B

Important terminology

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

Important terminology

emd sd45 pacific southern diesel railway sd45x engine museum rebuilt locomotives sd45s railroad units sd40 transportation 20-645e3 kw display locomotive

EMD SD45 relationships Subject–Predicate–Object triples

TTTA extracted 55 structured relationships around EMD SD45. Examples in this analysis include EMD SD45 → Build date → Dec. 1965 – Dec. 1971 and EMD SD45 → Builder → General Motors Electro-Motive Division (EMD). The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
EMD SD45Build dateDec. 1965 – Dec. 19711.00infobox
EMD SD45BuilderGeneral Motors Electro-Motive Division (EMD)1.00infobox
EMD SD45Configuration:​1.00infobox
EMD SD45Cylinders201.00infobox
EMD SD45Engine typeV20 diesel1.00infobox
EMD SD45Gauge.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .de…1.00infobox
EMD SD45GeneratorAR10B1.00infobox
EMD SD45Length65 feet 8 inches (20.02 m); 65 feet 9+1⁄2 inches (20.053 m) on some units starting early 1968.1.00infobox
EMD SD45Loco weight368,000 pounds (167,000 kg)1.00infobox
EMD SD45Maximum speed71 miles per hour (114 km/h)1.00infobox
EMD SD45ModelSD45, SD45X1.00infobox
EMD SD45Performance figuresPerformance figuresMaximum speed71 miles per hour (114 km/h)Power output3,600 hp (2,680 kW)Tractive effortStarting: 92,000 lbf (410 kN) Continuous: 82,100 lbf (365 kN) @ 11 mph…1.00infobox
EMD SD45Power output3,600 hp (2,680 kW)1.00infobox
EMD SD45Power typeDiesel1.00infobox
EMD SD45Prime moverEMD 20-645E31.00infobox
EMD SD45SpecificationsSpecificationsConfiguration: ​ • AARC-CGauge.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vert…1.00infobox
EMD SD45Total produced1,260 SD45; 7 SD45X1.00infobox
EMD SD45Tractive effortStarting: 92,000 lbf (410 kN) Continuous: 82,100 lbf (365 kN) @ 11 mph (18 km/h)1.00infobox
EMD SD45Type and originType and originPower typeDieselBuilderGeneral Motors Electro-Motive Division (EMD)ModelSD45, SD45XBuild dateDec. 1965 – Dec. 1971Total produced1,260 SD45; 7 SD45X1.00infobox
EMD SD45• AARC-C1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around EMD SD45 bring nearby vocabulary together. In this analysis, examples include Sd45x, Sd45 and Kw. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • EMD SD45
    • Sd45x
    • Sd45
    • Kw
    • Total
    • Units
    • Diesel
    • Locomotives
    • Starting
    • Type
    • Sd40
    • Engine
    • Hp
  • emd sd45
    • Sd45x
    • Sd45
    • Kw
    • Total
    • Units
    • Diesel
    • Locomotives
    • Starting
    • Type
    • Southern
    • Sd40
    • Pacific
  • emd 645e3
    • Sd45x
    • Sd45
    • Kw
    • Total
    • Units
    • Diesel
    • Locomotives
    • Starting
    • Type
    • Sd40
    • Engine
    • Hp
  • diesel locomotives
    • Total
    • Southern
    • Pacific
    • Mover
    • Starting
    • Type
    • 20-645e3
    • Emd
    • Prime
    • Sd45r
    • Transportation
    • Units
  • emd sdp45
    • Sd45x
    • Sd45
    • Kw
    • Total
    • Units
    • Diesel
    • Locomotives
    • Starting
    • Type
    • Sd40
    • Engine
    • Hp
  • northern pacific railway
    • Southern
    • Preserved
    • Railroad
    • Locomotives
    • Sd45r
    • Museum
    • Transportation
    • Rebuilt
    • Railway
    • Sd45
    • Pacific
    • Sd40
  • northern pacific 3617
    • Southern
    • Preserved
    • Railroad
    • Locomotives
    • Sd45r
    • Transportation
    • Rebuilt
    • Railway
    • Sd45
    • Pacific
    • Sd40
    • Museum
  • southern pacific
    • Southern
    • Railroad
    • Locomotives
    • Sd45r
    • Transportation
    • Rebuilt
    • Sd45
    • Museum
    • Railway
    • Preserved
    • Static
    • Total

Connections between topic areas Semantic bridges

For EMD SD45, one of the stronger structural bridges in this analysis connects EMD SD45 with Preservation. 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 SD45 — Preservation · splits 45 ⟂ 19
EMD SD45 — Design · splits 46 ⟂ 18
EMD SD45 — Overview · splits 54 ⟂ 10
EMD SD45 — Accidents and incidents · splits 56 ⟂ 8
EMD SD45 — Rebuilds · splits 60 ⟂ 4
EMD SD45 — Sources · splits 60 ⟂ 4

Map overview Semantic statistics

EMD SD45

Nodes64
Edges63
Triples55
Avg. degree1.97
Density0.03125
Components1

Source & methodology

TTTA analyzes the structure around EMD SD45 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Standards & 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 SD45 · EN edition · Analysis: TopicsToTalkAbout

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