full impact rate

[france3]

помогите плиз перевести:
full impact rate - скорости при ударной нагрузке?

STARTING THE MACHINE
To start the machine, push the On/Off switch 2 to the “I” position.
To switch off the machine, push the On/Off switch 2 to the “0” position.

For low temperatures, the power tool reaches the full impact rate only after a certain time. This start up time can be shortened by striking the chisel in the power tool against the floor one time.

[tumanov]

Пишите про «нормальную или штатную рабочую мощность» — ошибетесь меньше.