What are the Legal Implications of Doing This? > 커뮤니티 카카오소프트 홈페이지 방문을 환영합니다.

The suspension method was originally just a couple of slotted links to compensate for movement which allowed gravity to provide the necessary pressure. This is all that is necessary in a slow speed depot environment. Broadly speaking, the higher speeds, the more complex the "stitching", although a simple catenary will usually suffice if the support posts are close enough together on a high speed route. Simply speaking, Cable-Propelled (CPT) is a transit technology that moves people in motor-less, engine-less vehicles that are propelled by a steel cable. There is a wide variety of electric traction systems around the world and these have been built according to the type of railway, its location and the technology available at the time of the installation. While many councils already have charge points, most of these are either in town centre car parks, or park and ride locations. These poles are owned by, and located on property owned by, a railroad company.

Old wiring may not be able to cope with the demand from charging your vehicle overnight and risk a fire in your property. The mechanics of power supply wiring is not as simple as it looks (Figure 1). Hanging a wire over the track, providing it with current and running trains under it is not that easy if it is to do the job properly and last long enough to justify the expense of installing it. The power circuit on the train is completed by connecting the return to brushes rubbing on the axle ends. The other shoes on the same circuit must be isolated while this is done, unless the current is switched off from the whole section - perhaps disabling several other trains. The secondary circuit (so named because it is fed from the secondary winding of the stepdown transformer) provides the standard 3-wire single-phase 115/230-volt electric service for residential and small commercial customers.

The red plastic sleeve above the clamp identifies the name of the owner and provides a contact telephone number. Tap. A tap, installed in the feeder cable provides connections for drop cables to individual buildings. The strand is placed under tension, what is electric cable and the communications cables are lashed to it. This is why national electrical supplies are distributed at up to 765,000 volts AC . Electric meter (behind the sign) to meter the power used by the two cable TV power supplies. Figure 9: To reduce the arcing at a neutral section in the overhead catenary, some systems use track magnets to automatically switch off the power on the train on the approach to the neutral section. A second set of magnets restores the power immediately after the neutral section has been passed. The power supply illustrated here is metered; the meter is visible below the power supply. Pole-mounted electric meter to provide power for the CATV power supply.

This has run in parallel with the development of power electronics and microprocessors. Although 3rd rail is considered a suburban or metro railway system, 750 volt DC third rail supply has been used extensively over southern England and trains using it run regularly up to 145 km/h. Simple - use the steel rails the wheels run on. In all but the rarest of examples, support from above is provided by cable and support from below is provided by rails. The wheels, being steel, take it to the running rails. This is one of the most common causes of wires "being down". It can use either DC (direct current) or AC (alternating current), the former being, for many years, simpler for railway traction purposes, the latter being better over long distances and cheaper to install but, until recently, more complicated to control at train level. Since the current may have been switched off to stop an arc or because of a short circuit, it is important that the train does not connect the dead section to the live section by passing over the gap and allowing its busline to bridge the gap. These special horns have a small air pressure tube attached which, if the pressure is lost, will cause the pan to lower automatically and so reduce the possible wire damage.