de-energised
1energised — energise (Brit.) v. invigorate, stimulate, enliven; supply with electrical power (also energize) …
2Train Protection & Warning System — The Train Protection Warning System (TPWS) is a train protection system deployed across the entire UK passenger railway network, as well as in Victoria, Australia. [ [http://www.networkrailmediacentre.co.uk/content/detail.asp?NewsAreaID=2… …
3Automatic Warning System — The Automatic Warning System (AWS) is a form of limited cab signalling and train protection system introduced in 1956 in the United Kingdom to help train drivers observe and obey signals. It was based on a 1930 system developed by Alfred Ernest… …
4Automatic Train Control — Japanese style ATC indicator. Automatic Train Control (ATC) is a train protection system for railways, ensuring the safe and smooth operation of trains on ATC enabled lines. Its main advantages include making possible the use of cab signalling… …
5Track circuit — A track circuit is a simple electrical device used to detect the presence or absence of a train on rail tracks, used to inform signallers and control relevant signals. Principles and operation The basic principle behind the track circuit lies in… …
6Track circuit interrupter — A track circuit interrupter may be fitted at catch points, trap points or buffer stops to maintain a track circuit in the occupied state in the event of a derailment. The track circuit remains de energised until the interrupter is replaced.… …
7Electrical impedance — Electromagnetism Electricity · …
8Pyroclastic flow — Pyroclastic flows sweep down the flanks of Mayon Volcano, Philippines, in 1984 …
9Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( …
10Meter Point Administration Number — A Meter Point Administration Number, also known as MPAN, Supply Number or S Number, is a 21 digit reference used in Great Britain to uniquely identify electricity supply points such as individual domestic residences. The gas equivalent is the… …
