PECO SL-46 TPWS Grid

PECO SL-46 TPWS Grid

PECO

--View our Shop\n--View our Feedback\n--Add to your Favourites\n--Ask us a QuestionProduct DetailsPeco SL-46 TPWS Train Protection Warning System OSS Over Speed System Pk12 OO\n\nPeco SL-46 TPWS Train Protection Warning System OSS Over Speed System Pk12 OO\n\nLittle Information About TPWS / OSS \\/ \\/ \\/\nIn a standard installation there are two pairs of loops, colloquially referred to as \""grids\"" or \""toast racks\"". Both pairs consist of an 'arming' and a 'trigger' loop. If the signal is at danger the loops will be energised. If the signal is clear, the loops will de-energise.\nThe first pair, the Over Speed Sensor (OSS), is sited at a position determined by line speed and gradient. The loops are separated by a distance that should not be traversed within less than a pre-determined period of time (approximately 1 second for passenger trains) if the train is running at a safe speed approaching the signal at danger. Due to different braking characteristics freight engines operate a.

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