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An above ground set of electric lines for the transmission of
power, data and communications. Based on an N&W prototype, this kind of
construct could exist wherever an electrical transmission system is operated.
By the summer of 1956, Norfolk & Western carried all of its power, signaling and
communications' wires on a single set of electric line poles paralleling their
trackside right of way (ROW).
The general arrangement of the electric lines and poles is as follows:
At the top of each pole, a pair of non-insulated ground lines connects the
lightning arrestor.
The upper crossbar carries just two non-insulated copper lines. These were
the N&W's own 3-phase 4800V 60Hz AC power buss and its associated ground line.
This power source ran everything from the signals and electro-pneumatic switch
motors, to the switch point heaters and the lights in the stations along the
ROW.
The middle crossbar also carried a single pair of insulated lines. These were
the signal lines used by N&W to affect Centralized Traffic Control (CTC) over
its mainline signals and switches. The signals were issued and confirmed via
encoded sequences of sixteen long and short data pulses. The first 8 coded
pulses identified the receiving station, signal, switch or monitoring system.
The last 8 coded pulses carried the specific command or update code.
No doubt the N&W techies thought this was a sophisticated variant of morse code
from the old telegraph days... Little did they know in 1956, that the CTC
signaling system represented a crude form of binary machine language.
The lower crossbar carried varying numbers of insulated twisted-pair
communications wires. The communications lines had been carried on separate
Western Union poles on the opposite side of the ROW from N&W's own poles until
1955, when WU announced they would be abandoning their trackside support of
railroads.
In order to avoid having to maintain two sets of poles and lines along their ROW,
N&W borrowed a relatively obscure technique for handling communications line that
were to be colocated on the same set of poles as high power lines. The technique
would later come to be known as 'twisted pair' - a term familiar to modern day
networking techies.
At periodic intervals the communications line pairs were physically reversed via
special brackets attached to the crossbars, so that interference from the high
power line on one of the comm lines would be neutralized as the same inteference
was allowed to affect the other line for a similar distance.
overhead_electric_lines.im | 43.9 kB |
transmissionlines.texture.txt | 40 B |
transmissionlines.tga | 24.5 kB |
overhead_electric_line_pole | |
overhead_electric_line_pole / overhead_electric_line_pole.im | 36.3 kB |
overhead_electric_line_pole / electrical_line_pole.texture.txt | 43 B |
overhead_electric_line_pole / electricalinsualtor.texture.txt | 42 B |
overhead_electric_line_pole / zincplate.texture.txt | 32 B |
overhead_electric_line_pole / electrical_line_pole.tga | 24.5 kB |
overhead_electric_line_pole / electricalinsualtor.tga | 12.5 kB |
overhead_electric_line_pole / zincplate.tga | 12.5 kB |
Общий объём файлов: | 154.5 kB |
kuid | kind | name | build | date | size |
---|---|---|---|---|---|
<kuid:64713:37010> | track | Overhead Electric Lines | 1.3 | 10.01.2021 18:37:27 | 52.8 kB |
kuid | author | kind | name | build | date | size |
---|---|---|---|---|---|---|
Нет |
kuid | author | kind | name | build | date | size |
---|---|---|---|---|---|---|
<kuid:45588:100176> | #45588 | map | SR Murphy Branch | 2.4 | 2.08.2020 9:41:41 | 1.5 MB |
<kuid:45588:100177> | #45588 | map | SR Murphy Branch CTC | 2.4 | 2.08.2020 9:40:32 | 1.5 MB |
<kuid:58398:100003> | #58398 | map | skisport ny | 0 | 22.04.2023 1:54:15 | 2.4 MB |
<kuid:66545:100125> | #66545 | map | Pennsylvania Lines | 0 | 25.10.2021 20:40:37 | 12.1 MB |
<kuid:78078:100003> | #78078 | map | CAN Edson Woodland | 0 | 21.04.2023 23:58:24 | 1.8 MB |
<kuid2:78078:100029:1> | #78078 | map | CANADA IMPRESSIONS LINE | 2.9 | 5.09.2025 12:43:29 | 6.0 MB |
<kuid:78078:100311> | #78078 | map | CAN Impressionz-SUMMER LAKE | 0 | 18.10.2021 20:38:27 | 6.8 MB |
<kuid:78078:100609> | #78078 | map | TRS-SP2 CAN Impressions Line | 2.2 | 17.01.2021 0:36:16 | 7.1 MB |
<kuid:78686:100080> | #78686 | map | CSX Saginaw Sub Trainz 12 | 3.7 | 10.09.2025 6:24:31 | 3.3 MB |
<kuid:97008:105380> | #97008 | map | Australfield | 2.4 | 21.04.2023 18:09:46 | 1.6 MB |
<kuid:101592:2075325581> | #101592 | map | TER North Eastern Fall Beta Re | 2.4 | 2.08.2020 17:37:29 | 1.6 MB |
<kuid:107727:1062> | #107727 | map | CSX Saginaw Sub | 2.5 | 20.04.2021 19:59:49 | 4.6 MB |
<kuid:107727:1064> | #107727 | map | CSX Saginaw Sub | 2.5 | 14.08.2023 10:12:56 | 2.0 MB |
<kuid:107727:1144> | #107727 | map | Conrail Lincoln Secondary | 2.5 | 2.08.2020 9:57:28 | 1.7 MB |
<kuid:107727:100102> | #107727 | map | CSX Saginaw Sub Version 2.1 | 3.7 | 10.09.2025 6:43:16 | 4.0 MB |
<kuid:107727:100109> | #107727 | map | CSX Saginaw Sub Version 2.2 | 3.7 | 10.09.2025 6:29:35 | 4.0 MB |
<kuid:115015:100076> | #115015 | profile | Bogus Journey S. v4.0 TRS19 | 4.8 | 4.09.2025 3:39:41 | 8.9 MB |
<kuid:115015:100150> | #115015 | profile | Bogus Journey | 4.5 | 4.09.2025 4:15:06 | 4.3 MB |
<kuid:115015:100179> | #115015 | profile | Bogus Journey v2.0 | 4.5 | 4.09.2025 2:54:57 | 7.5 MB |
<kuid:115479:100385> | #115479 | map | Allentown | 0 | 20.04.2021 20:25:30 | 2.3 MB |
<kuid:115479:101701> | #115479 | map | Lehigh Valley | 2.2 | 2.08.2020 17:37:15 | 6.3 MB |
<kuid:115479:104780> | #115479 | map | NSReadingLineDLS | 2.4 | 17.01.2021 1:09:56 | 17.9 MB |
<kuid2:134612:100005:12> | #134612 | map | Dragons Passage 2023 | 5.4 | 10.09.2025 8:36:36 | 34.9 MB |
<kuid:134612:100122> | #134612 | profile | DPR - Last Train to Greenhill | 4.5 | 13.09.2025 11:21:17 | 304.4 kB |
<kuid:134612:100125> | #134612 | profile | DVR - The Takeover | 4.5 | 13.09.2025 11:46:04 | 310.1 kB |
<kuid:134612:100148> | #134612 | profile | DVR - Carsons Express | 4.5 | 13.09.2025 11:01:00 | 281.0 kB |
<kuid:134612:100198> | #134612 | profile | DVR - Trip to Sunnyside City | 4.5 | 13.09.2025 10:44:30 | 281.6 kB |
<kuid2:134612:100299:1> | #134612 | profile | Cogwell Shipping Company - twightlingt Husler | 4.6 | 10.09.2025 8:36:21 | 374.2 kB |
<kuid:160088:1002> | #160088 | map | Alberta run | 2.6 | 30.08.2025 2:25:36 | 16.3 MB |
<kuid:160088:1005> | #160088 | map | Alberta run | 2.6 | 30.08.2025 2:24:04 | 26.8 MB |
<kuid2:160088:1005:1> | #160088 | map | Alberta run | 3.7 | 30.08.2025 2:24:17 | 16.0 MB |
<kuid:184716:101120> | #184716 | map | 1 Freight Combo | 3.7 | 15.08.2025 4:52:57 | 39.9 MB |
<kuid:184716:101214> | #184716 | map | 1 Freight Combo v1.1 | 3.7 | 18.08.2025 22:05:42 | 40.1 MB |
<kuid2:238039:1055:1> | #238039 | map | Colne to Skipton light aa | 3.5 | 9.09.2025 17:48:44 | 4.9 MB |
<kuid:238039:1101> | #238039 | map | Clinchfield Proto pt1aa | 2.6 | 9.09.2025 14:07:22 | 14.4 MB |
<kuid2:238039:1101:1> | #238039 | map | Clinchfield Proto pt1aa | 3.5 | 9.09.2025 14:07:50 | 9.3 MB |
<kuid2:238039:1514:1> | #238039 | map | Colne to Skipton Pt2 | 3.5 | 10.09.2025 8:51:11 | 4.9 MB |
<kuid:262137:101074> | #262137 | map | Caney Fork RR | 2.4 | 2.08.2020 9:46:22 | 10.4 MB |
<kuid:357974:1011> | #357974 | map | KCS Hilliam Sub | 2.5 | 14.08.2023 10:12:56 | 687.3 kB |
<kuid2:375451:1068:1> | #375451 | map | Dragon's Pass V1.0 Phase 2 | 3.3 | 13.09.2025 13:10:54 | 2.0 MB |
<kuid:375451:1072> | #375451 | map | Dragon's Pass | 2.6 | 13.09.2025 13:09:55 | 2.4 MB |
<kuid2:375451:100010:9> | #375451 | map | Dragon's Pass V6.5 Multiyplayer ( Beta ) | 3.7 | 13.09.2025 9:54:58 | 4.8 MB |
<kuid2:375451:100010:10> | #375451 | map | Dragon's Pass V6.5 Multiyplayer ( Beta ) | 3.7 | 13.09.2025 9:56:34 | 4.8 MB |
<kuid2:375451:100020:1> | #375451 | map | Dragon's Pass V3.5 | 3.6 | 13.09.2025 11:16:24 | 4.7 MB |
<kuid2:375451:100062:2> | #375451 | map | Dragon's Pass Muiltyplayer Mode | 3.6 | 13.09.2025 8:13:55 | 4.6 MB |
<kuid2:375451:100062:3> | #375451 | map | Dragon's Pass Muiltyplayer Mode | 3.6 | 13.09.2025 8:15:41 | 4.6 MB |
<kuid2:375451:100062:4> | #375451 | map | Dragon's Pass Muiltyplayer Mode | 3.6 | 13.09.2025 8:17:25 | 4.6 MB |
<kuid:375451:100067> | #375451 | map | Dragon's Pass V2.0 | 3.4 | 13.09.2025 11:50:36 | 4.1 MB |
<kuid2:375451:100149:1> | #375451 | map | Dragon's Pass V4.0 | 3.6 | 13.09.2025 13:11:54 | 10.4 MB |
<kuid2:375451:100149:2> | #375451 | map | Dragon's Pass V4.0 | 3.6 | 13.09.2025 13:14:39 | 10.4 MB |
<kuid:375451:100405> | #375451 | map | Dragons Pass 1920s Steam Era | 3.7 | 18.10.2021 19:30:24 | 12.5 MB |
<kuid2:375451:100463:3> | #375451 | map | Dragons Pass V4.7 | 3.7 | 23.01.2021 12:33:45 | 13.3 MB |
<kuid:382182:100116> | #382182 | map | CSX Saginaw Sub Multiplayer Route | 3.7 | 10.09.2025 0:35:11 | 3.4 MB |
<kuid:405359:100175> | #405359 | map | CSX Saginaw Sub Trainz 2012 | 3.7 | 10.09.2025 7:42:07 | 3.5 MB |
<kuid2:515942:100053:1> | #515942 | map | Oil Creek & Titusville Railroad | 4.6 | 10.09.2025 6:12:18 | 24.4 MB |
<kuid2:628433:100001:3> | #628433 | map | CSX Saginaw Sub Trainz 12 | 3.6 | 10.09.2025 7:02:19 | 3.3 MB |
<kuid2:628433:100001:4> | #628433 | map | CSX Saginaw Sub Trainz 12 | 3.6 | 10.09.2025 7:02:29 | 3.3 MB |
<kuid2:628433:100001:6> | #628433 | map | CSX Saginaw Sub Trainz 12 | 3.6 | 10.09.2025 7:02:39 | 3.3 MB |
<kuid2:670546:100222:1> | #670546 | map | BNSF Central Valley Sub Division | 3.7 | 1.09.2025 1:21:05 | 4.8 MB |
<kuid:768798:100182> | #768798 | map | CSX Saginaw Sub (Trainzfan7525's Redone Route) | 4.5 | 10.09.2025 15:12:24 | 7.0 MB |
<kuid:844571:100854> | #844571 | map | Amtrak City of New Orleans | 4.5 | 1.09.2025 13:27:47 | 4.6 MB |
<kuid:844571:103651> | #844571 | map | CSX Saginaw Sub | 4.5 | 10.09.2025 4:57:31 | 4.7 MB |
<kuid:845447:100920> | #845447 | map | ATSF KC TO EMPORIA & HOWARD BRANCH 1928 - 1934 | 5.4 | 1.09.2025 4:58:06 | 101.2 MB |
<kuid:907573:100001> | #907573 | map | Gaines Shortline (3.1 Miles) | 3.8 | 16.09.2025 12:13:31 | 951.0 kB |