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Glossary
I
Inlet valve
With high-pressure cleaners, usually a check valve, via which fluid (water) is sucked into a pump which, at the same time, prevents extracted fluid from flowing back into the supply network.
Impact driver
Screwdriver which acts by means of rotary impact on the application tool. A popular term for this is impact wrench.
Intermittent periodic duty (AB)
The following operating modes have been defined for motors:
Continuous running duty (CRD) S1
Short-time duty (STD) S2
Intermittent periodic duty (IPD) S3
In the case of intermittent periodic duty the cyclic duration factor (c.d.f.) in percent is an important figure, since the excess heat is allowed to dissipate by convective cooling during the stoppages. Therefore the intermittent periodic duty consists of the on-time and the breaks for cooling. This is also called a duty cycle. The observation period for power tools is always ten minutes. 40% c.d.f. means that the power tool can be operated for four minutes with the rated power input, which is followed by a cooling period of six minutes.
Rated load 4 minutes+ cooling pause 6 minutes= work cycle 10 minutes
The cyclic duration factor is usually 20%, 40% or 60%. Circular saws and belt sanders are used in intermittent periodic duty due to their particular operating characteristics. For electric welders other units of time apply.
Continuous running duty (CRD) S1
Short-time duty (STD) S2
Intermittent periodic duty (IPD) S3
In the case of intermittent periodic duty the cyclic duration factor (c.d.f.) in percent is an important figure, since the excess heat is allowed to dissipate by convective cooling during the stoppages. Therefore the intermittent periodic duty consists of the on-time and the breaks for cooling. This is also called a duty cycle. The observation period for power tools is always ten minutes. 40% c.d.f. means that the power tool can be operated for four minutes with the rated power input, which is followed by a cooling period of six minutes.
Rated load 4 minutes+ cooling pause 6 minutes= work cycle 10 minutes
The cyclic duration factor is usually 20%, 40% or 60%. Circular saws and belt sanders are used in intermittent periodic duty due to their particular operating characteristics. For electric welders other units of time apply.
Indicator
Device or display that shows a physical variable or technical status without measuring it or influencing it.
Inlet valve
With high-pressure cleaners, usually a check valve, via which fluid (water) is sucked into a pump which, at the same time, prevents extracted fluid from flowing back into the supply network.
Interference suppression
Device for suppressing the emission of electromagnetic energy. Also referred to as radio/television interference suppression.
Integrated dust extraction
Dust extraction system integrated in the power tool usually with additional extraction fan wheel.
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