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Transmission Joints up to 345kV

G&W LPP joints rated up to 345kV are designed for pipe-type high pressure fluid filled (HPFF), 3-core cables with laminated polypropylene paper (LPP) or paper insulation, handling rated fluid-filled pressures up to 400 psi.

  • The joint features a field-machined (FM) connector and a field-applied, LPP/paper-insulated body, including cable insulation “stepping” at the connector and stress control slopes at ground electrodes.
  • Every joint is custom designed and engineered for the specific cable system requirements and field constraints.
  • The 345kV-rated joint can fit in a typical 18'x6' manhole.
  • All necessary construction materials and parts are supplied with each kit, including tapes, carbon steel casings, reducers and cable supports (spiders).
  • The joint is qualified per IEEE 404-12 at 345kV system voltage level.

Catalog Numbers per Voltage Level

System Voltage BIL Rating Catalog Number
650kV LCJ 140 - L
230kV 1050kV LCJ  160 - L
345kV 1300kV LCJ 180 - L


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