The three -phase engine is designed to transform electric energy into mechanical, thereby starting the operation of equipment mechanisms.
These engines are often installed on various machines used for the construction of buildings and structures, namely:
– pier hammers (as they are also called, copies), which are designed to install piles in a certain place;
– Career excavators used for digging pits during buildings
– construction lifting cranes;
– conveyor tapes
It is important to remember that three-phase asynchronous engines need to be equipped with the so-called software (these are devices for a smooth start of the engine that protect it from excessive overheating, overload or phase loss) .
But the device of smooth starting of the engine not only protects the engine (and, accordingly, the entire mechanism) from wear and premature failure, but also significantly contribute to a reduction in the load on the power supply – after all, in this case, the starting current is more than 4 times more than 4 times. With direct start – exceeds the nominal, at least 5-7 times. And when the electric drive is powered by a diesel generator, or a transformer substation with limited power, such a savings are of great importance.
In addition to machines used in construction, three -phase engines are well suited for operation in residential buildings and mining facilities – mines – for launching the lifting mechanism.
SOFT starters are as mechanical (interfere with a sharp increase in speed), electric (which gradually increase current strength and gently disperse the engine) and combined type.
