Method for manufacturing SF.sub.6 pressurized gas continuous spa

Details Method for manufacturing SF.sub.6 pressurized gas continuous spa Method for manufacturing SF.sub.6 pressurized gas continuous spa

1979-10-15

1982-08-10

Kimlin, Edward C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

29857, 29870, 156 56, 156145, 156188, 156195, 156285, 174 15C, 174 25G, 174 26G, 174DIG7, H01B 1308, H01B 1736

Patent

active

043436650

ABSTRACT:
This invention relates to a new method for manufacturing a SF.sub.6 pressurized gas continuous spacer cable, and improvements which reduce costs and improve quality control of high voltage cables. The conductor is passed through taping machines for surrounding the conductor with a continuous insulating spacer and through taping machines for applying a conducting shielding material which partially covers the spacer. The insulated and shielded cable is continued on in the same production line into conduit which is laid out horizontal in long lengths or is extruded loose-fit over the cable. The cable is then subjected to vacuum while in the conduit. Terminations are applied. Seals are tested for leaks. The cable is filled with SF.sub.6 gas to a high pressure. The cable is tested at 1.5 times its operating voltage to ground for 30 minutes without failure.

REFERENCES:
patent: 3403063 (1968-09-01), Walker
patent: 3608710 (1971-09-01), Pugh
patent: 3613231 (1971-10-01), Pugh
patent: 3721002 (1973-03-01), Pugh
patent: 4092485 (1978-05-01), Wanser
Shanklin, G. B. "Low-Gas-Pressure Cable", Electrical Eng'g. Transactions (IEEE), Jul. 1939, pp. 1-12.

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