Japan Rail HQ remix #5 日本のでんしゃ
Uploader Comments (Rocketboy1950)
Top Comments
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Ah Japan, the world's biggest train set. Never ceases to amaze me the variety of rolling stock. I've gotta get back there some time soon. Keep 'em coming Rocketboy.
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Easiest, quickest, and by far the cheapest way to see a whole lot if you have minimal time (e.g. a lay-over at Narita).
All Comments (24)
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Oh a great train system. When you see one you know that you're definitely not in America anymore.
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@tykrn19 Can't help you, back in Australia now
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@Rocketboy1950 Hey buddy, can't wait for you another masterpiece, the Japan Railway...... And if you don't mind, may i have a request?. Would you please...please....please.... i want to see any videos about the ATC (Automatic Train Controller) system...
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Trams in Japan operate with 750V DC.
Pantos in some trains, especially older trains cannot do two tasks in the same time since it needs more capacitors to do. Nowadays, those capacitors can do the jobs in the same time. But there is one more factor need to be considered in urban railways: tight schedule and short signal block sections means that there are too many trains on the same route. Power consumptions is too heavy for a single panto.
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The voltage of Japanese rails 1500V DC, but tram routes uses 750V only.
That is the problem of capacity. Train running in DC sections must raise two pantos while trains in AC sections raise only one pan. Using one pan for both collecting and regenerative returning in dense route may risk overflowing.
thorchan 11 months ago
@thorchan I fail to comprehend the explanation. Trams in my part of the world run on 600v DC, trains run on 1500v and one panto per power car both receives power and returns any regenerated current.
Rocketboy1950 11 months ago
@thorchan Let's just leave it at that.
Rocketboy1950 11 months ago
The power returned to live line can be used by the trains behind.
thorchan 11 months ago
@thorchan I know how that works, the question is why is it necessary to use a second pantograph. All the trains that I have operated use the same panto for supply and return. Even with four pantos up none of them were connected to each other. They all functioned as individual collectors or regenerative return units. And they were all 1500v DC units.
Rocketboy1950 11 months ago