BBTRZ Copper 3+1-Core Flexible Mineral-Insulated Fire-Resistant Cable, LSOH Sheath, IEC 0.6/1kV Power Cable

BBTRZ combines a 3+1 conductor arrangement with flexible mineral-insulated construction for power-system use. Copper conductors, an LSOH sheath and a rated voltage of 0.6/1kV give the cable a specific material and electrical identity for the project schedule.

Define the 3+1 construction on the drawing

Keep the BBTRZ core arrangement exactly as required by the system design. The construction drawing should identify every conductor’s section and role, so the additional conductor is defined through the project requirement rather than an assumed size relationship. For the 3+1 version, include these points in the cable request:

• The section and intended role of each conductor in the 3+1 arrangement.
• The dimensional drawing for the selected mineral-insulated construction.
• The required physical cable length for that BBTRZ build.

Carry the LSOH build into the power-system specification

The mineral insulation and LSOH sheath are separate construction details to retain during comparison. Specify both with the flexible cable type so that the selected BBTRZ build is clearly identified. The fire-resistant construction should be matched to the particular performance criterion required by the power system, including the applicable construction-specific test reference when relevant.

Complete the size and length agreement

A 50mm2 option is available for this version. Use the selection to identify the requested cable while agreeing actual conductor cross-sections and cut length with the 3+1 drawing. Keep the final dimensions with the selected construction so the cable schedule describes the finished order clearly.

The useful comparison for this BBTRZ configuration is the combination of arrangement, construction and agreed dimensions. Retaining those points together gives the power-system request a defined technical basis without assigning an unsupported conductor role or test classification.