Travelling cable of an elevator, and an elevator

A travelling cable of an elevator, comprising:

• a protective envelope;
• conductors for transmitting electrical energy and data between an elevator car and an elevator hoistway;
• and
• load-bearing bearer parts of essentially the length of the travelling cable for fixing the travelling cable at a first end thereof to the elevator car and at a second end thereof to the elevator hoistway,
• wherein each bearer part is a composite structure and is composed of reinforcing fibers, wherein the reinforcing fibers are glass reinforcing fibers or aramid reinforcing fibers or carbon reinforcing fibers or polybenzoxazole reinforcing fibers or polyethylene reinforcing fibers or nylon reinforcing fibers, and wherein the reinforcing fibers are distributed in a polymer matrix material,
• wherein at least one bearer part of said bearer parts includes one or more optical fibers disposed inside, or essentially in a proximity of a surface of the composite structure of said at least one bearer part, wherein the composite structure of said at least one bearer part is completely non-metallic and wherein the reinforcing fibers of said at least one bearer part are straight and essentially unidirectional with a longitudinal direction of the traveling cable and are homogeneously distributed into the polymer matrix material of said at least one bearer part,
• wherein a plurality of said bearer parts are directly surrounded by a plurality of twisted-pair cables, and
• wherein the plurality of twisted-pair cables are directly surrounded by said conductors.