Division 3.3.6.3 Torque range

For each speed step the torque loss shall be measured for the following input torques: 0 (free rotating output shaft), 200, 400, 600, 900, 1 200, 1 600, 2 000, 2 500, 3 000, 3 500, 4 000, […] Nm up to the maximum input torque per gear according to the specifications of the transmission or the last torque step before the defined maximum torque and/or the last torque step before the output torque of 10 kNm.

In the case the output torque exceeds 10 kNm (for a theoretical loss free transmission) or the input power exceeds the specified maximum input power, point 3.4.4. shall apply.

The torque ramp (time for the change between two torque steps) shall not exceed 15 seconds (180 seconds for option 2).

To cover the complete torque range of a transmission in the above defined map, different torque sensors with limited measurement ranges may be used on the input/output side. Therefore the measurement may be divided into sections using the same set of torque sensors. The overall torque loss map shall be composed of these measurement sections.