. The street railway review . of the tie wiresare left so long that they are bent down and touch the insulatornear its edge. This has the effect of reducing the striking dis- May 20, 1904.] STREET RAILWAY REVIEW. 299 tance between the line and the grouml by virtually bringing theline to the edge of the insulator. This is bad practice, and shouldbe avoided in high tension installations. Fig. 9 illustrates a peculiar phenomenon which was observed bythe writer while connected with a system on which some new in-sulators were installed. These insulators cost a little less thansome of the standard m
. The street railway review . of the tie wiresare left so long that they are bent down and touch the insulatornear its edge. This has the effect of reducing the striking dis- May 20, 1904.] STREET RAILWAY REVIEW. 299 tance between the line and the grouml by virtually bringing theline to the edge of the insulator. This is bad practice, and shouldbe avoided in high tension installations. Fig. 9 illustrates a peculiar phenomenon which was observed bythe writer while connected with a system on which some new in-sulators were installed. These insulators cost a little less thansome of the standard makes, and there was about 50 milesof them in use. It -was found, however, that these insulatorswould frequently burst with a loud report and in consequence the50 miles of line had to be rebuilt with another make of insulators. Hdt the wires crossed at an angle of about 45 degrees. This caused thetwo outside phases to cross each other at the point marked -f. onewire being about iS in. above the other in the middle of the ITie cause of the trouble was that the insulator.; were not properlyannealed during manufacture. .\ peculiar short circuit which occurred on a 26,000 volt line wasobserved by the writer during the summer season in a westernstate. The peculiarity of the short circuit was that it would comeon the line about 4:30 p. m. every day. It was at first thought
Size: 1442px × 1733px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
