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SL C20: Measurement, Refurbishment & C20F

The SL C20 is a type of subway train used in the Stockholm metro in Sweden. Between 1997 and 2004, 271 3-car sets, numbered 2000–2270, were delivered to Stockholm by the former Kalmar Verkstad, owned by Adtranz, later acquired by Bombardier Transportation. The C20 is a completely new design and therefore is not compatible with other train types in the…

Language: English [EN]
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SL C20 topic overview

The analysis highlights Measurement, Refurbishment and C20F as prominent areas in the source structure around SL C20.

Related topics
16
Source areas
3
Connected nodes
19
Extracted relationships
44
Concept neighborhoods
12
Bridge connections
19

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.

Overview · 10 topics
Refurbishment · 4 topics
C20F · 2 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.

Bogies
Bombardier FLEXX Eco 505x
Built at
Kalmar Verkstad, Kalmar, Sweden
Capacity
126 seated, 288[a] standing
Car body construction
Stainless steel
Constructed
1997-2004
Coupling system
Dellner

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

Refurbishment

C20F

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 SL C20 connects Entity context

The extracted context around SL C20 shows recurring relationship patterns in the source. For example, SL C20 → 70 km/h (43 mph) (Green line; service), 80 km/h (50 mph) (Red and Blue lines; service), 90 km/h (56 mph) (design) Another extracted example is SL C20 → 2 per side (end cars), 3 per side (intermediate car). Use these groups to spot repeated connection types before inspecting the individual relationships.

SL C20

Top relations

Maximum speed · 3
SL C20 → 70 km/h (43 mph) (Green line; service), 80 km/h (50 mph) (Red and Blue lines; service), 90 km/h (56 mph) (design)
Doors · 2
SL C20 → 2 per side (end cars), 3 per side (intermediate car)
Fleet numbers · 2
SL C20 → 2000 (C20F), 2001–2270 (C20)
HVAC · 2
SL C20 → Air-conditioning and heater (C20F), Forced-air ventilation with driver's compartment air-conditioning and heater (C20)
Number built · 2
SL C20 → C20: 810 carriages (270 sets), C20F: 3 carriages (1 set)
Number in service · 2
SL C20 → C20: 810 carriages (270 sets), C20F: 3 carriages (1 set)
Traction system · 2
SL C20 → Bombardier MITRAC TC1410 IGBT–VVVF (as built), Bombardier MITRAC TC1500 SiC–VVVF (2017-2018 trial)
Bogies · 1
SL C20 → Bombardier FLEXX Eco 505x
Built at · 1
SL C20 → Kalmar Verkstad, Kalmar, Sweden
Capacity · 1
SL C20 → 126 seated, 288[a] standing

Important terminology

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

Important terminology

c20 stockholm c20f car train sets metro 2000 new bogies refurbishment sweden subway refurbished bombardier transportation end stainless steel adtranz

SL C20 relationships Subject–Predicate–Object triples

TTTA extracted 44 structured relationships around SL C20. Examples in this analysis include SL C20 → Bogies → Bombardier FLEXX Eco 505x and SL C20 → Built at → Kalmar Verkstad, Kalmar, Sweden. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
SL C20BogiesBombardier FLEXX Eco 505x1.00infobox
SL C20Built atKalmar Verkstad, Kalmar, Sweden1.00infobox
SL C20Capacity126 seated, 288[a] standing1.00infobox
SL C20Car body constructionStainless steel1.00infobox
SL C20Constructed1997-20041.00infobox
SL C20Coupling systemDellner1.00infobox
SL C20Current collectionContact shoe1.00infobox
SL C20DepotsHammarby, Högdalen, Norsborg, Nyboda, Rissne, Vällingby1.00infobox
SL C20Doors2 per side (end cars)1.00infobox
SL C20Doors3 per side (intermediate car)1.00infobox
SL C20Electric systems650–750 V DC third rail1.00infobox
SL C20Family nameMovia1.00infobox
SL C20Fleet numbers2000 (C20F)1.00infobox
SL C20Fleet numbers2001–2270 (C20)1.00infobox
SL C20Formation3 cars (A-C-B) per unit, 2-3 units per train1.00infobox
SL C20Height3.68 m (12 ft 7⁄8 in)1.00infobox
SL C20HVACForced-air ventilation with driver's compartment air-conditioning and heater (C20)1.00infobox
SL C20HVACAir-conditioning and heater (C20F)1.00infobox
SL C20In service10 May 1998 – present1.00infobox
SL C20Line servedAll Stockholm metro lines1.00infobox
SL C20ManufacturerAdtranz/Bombardier Transportation1.00infobox
SL C20Maximum speed90 km/h (56 mph) (design)1.00infobox
SL C20Maximum speed80 km/h (50 mph) (Red and Blue lines; service)1.00infobox
SL C20Maximum speed70 km/h (43 mph) (Green line; service)1.00infobox
SL C20Number builtC20: 810 carriages (270 sets)1.00infobox
SL C20Number builtC20F: 3 carriages (1 set)1.00infobox
SL C20Number in serviceC20: 810 carriages (270 sets)1.00infobox
SL C20Number in serviceC20F: 3 carriages (1 set)1.00infobox
SL C20OperatorConnecting Stockholm (under contract from Storstockholms Lokaltrafik)1.00infobox
SL C20Platform height1.15 m (3 ft 9+1⁄4 in)1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around SL C20 bring nearby vocabulary together. In this analysis, examples include C20f, Metro and New. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • SL C20
    • C20f
    • Metro
    • New
    • Train
    • Car
    • Stockholm
    • Set
    • Sweden
    • Refurbished
    • Refurbishment
    • Design
    • Movia
  • sl c20
    • C20f
    • Metro
    • New
    • Train
    • Car
    • Stockholm
    • Set
    • Sweden
    • Refurbished
    • Refurbishment
    • Design
    • Movia
  • stockholm metro
    • Sweden
    • Metro
    • Stockholm
    • Movia
    • Subway
    • Train
    • Type
    • Units
    • Interior
    • Adtranz
    • Bombardier
    • Kalmar
  • sweden
    • Train
    • Interior
    • Refurbished
    • Refurbishment
    • C20f
    • Adtranz
    • Bombardier
    • Design
    • Ft
    • Kalmar
    • Movia
    • System
  • kalmar verkstad
    • Adtranz
    • Bombardier
    • Transportation
    • Verkstad
    • Sets
    • Design
    • Ft
    • Later
    • Movia
    • Stockholm
    • System
    • Unit
  • adtranz
    • Bombardier
    • Kalmar
    • Transportation
    • Verkstad
    • Sets
    • Design
    • Ft
    • Later
    • Movia
    • Stockholm
    • System
    • Unit
  • bombardier transportation
    • Kalmar
    • Transportation
    • Verkstad
    • Sets
    • Design
    • Ft
    • Later
    • Movia
    • Stockholm
    • System
    • Unit
    • Units
  • bogies
    • Unit
    • Weight
    • Car
    • Bombardier
    • Design
    • Ft
    • Kalmar
    • Movia
    • System
    • Transportation
    • Units
    • Verkstad

Connections between topic areas Semantic bridges

For SL C20, one of the stronger structural bridges in this analysis connects SL C20 with Overview. 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
SL C20 — Overview · splits 9 ⟂ 11
SL C20 — Refurbishment · splits 15 ⟂ 5
SL C20 — C20F · splits 17 ⟂ 3

Map overview Semantic statistics

SL C20

Nodes20
Edges19
Triples44
Avg. degree1.9
Density0.1
Components1

Source & methodology

TTTA analyzes the structure around SL C20 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Measurement, Refurbishment & C20F, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — SL C20 · EN edition · Analysis: TopicsToTalkAbout

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