Elevator and arrangement

An arrangement for an elevator, wherein the elevator includes an elevator car, a car-supporting frame supporting the elevator car and having guide devices and a horizontal beam, which is above the elevator car and extends between the guide devices, the guide devices being configured to guide the elevator car along guide rails, the elevator further including a first set of diverting pulleys on the horizontal beam from which hoisting ropes of the elevator go downward, and a second set of diverting pulleys on the horizontal beam from which the hoisting ropes of the elevator go upward, the arrangement comprising:

• a first rope tension in rope portions of the hoisting ropes going downward from each diverting pulley of the first set of diverting pulleys that is smaller than a second rope tension in rope portions of the hoisting ropes going upward from each diverting pulley of the second set of diverting pulleys;
• a first average distance measured from a vertical plane of the car-supporting frame to all of the diverting pulleys of the first set of diverting pulleys;
• and
• a second average distance measured from the vertical plane of the car-supporting frame to all of the diverting pulleys of the second set of diverting pulleys;
• wherein a ratio of the first rope tension to the second rope tension is substantially equal to a ratio of the second average distance to the first average distance.