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| Re: Canarsie CBTC (98025) | |||
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Re: Canarsie CBTC |
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Posted by 28481k on Mon Jun 13 09:35:15 2005, in response to Re: Canarsie CBTC, posted by tracksionmotor on Fri Jun 10 00:17:12 2005. Since we know that the RF is not dedicated in Siemens CBTC, so there is a hell of a trouble of radio interference. For examaple, HK KCR West Rail had several intances of signal failure due to interference. Though it is quite resistant to normal twitchings of Wi-Fi and TV signals, High Voltage AC power line seems to be to much to the system. In fact, the black spot of signal failure is the section just below a high tension AC power line near Kam Tin. KCR West Rail uses industrial railway voltage (25000V 50Hz) and Siemens tries very hard to make it compatible with its CBTC. Oh, didn't I say Siemens? Well, Siemens is the main sub-contractor of Alcatel Seltrac installtion in KCR West Rail, and KCR ended up paying more to prevent Siemens bail out from installing the network! There was even an inquiry on such matter in the Legislative Council! |
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