Another example: For 3× peak current (9× power) the two-parameter model allows a 7% duty cycle, while the four-parameter model calculates a safe duty cycle of only 1.5% — a value 466% lower.

As a result of these developments, overall performance of the HS 835 HD on duty cycle work will be 25 to 30% higher on average than the existing HS 833 HD, Liebherr claimed. The HS 835 HD is designed ...