A trottle controlled electric drive is used to decrease current surges.
Previously, in order to limit starting currents of a slip-ring induction motor, starting direct current resistance was introduced into a rotor circuit (see pic.). The main disadvantage of this method is the current surges during the transition from one mechanical characteristic of the electric motor to another, which lead to rapid wear and failure of electrical and mechanical parts of the electric drive.
ООО Kirov Electromagnets Plant DimAl proposes to use a throttle controlled electric drive, consisting of a DDP crane starting throttle and a DRS thyristor speed controller.
This type of drive has the following advantages:
The throttle electric drive is manufactured as standard with a capacity of up to 160 kW.
Working range of ambient temperature is from - 40 ° С to + 60 ° С.
The picture below shows the connection diagram of the throttle electric drive.
До 11
50
Без ограничений
360
500х455х175
14
До 30
125
Без ограничений
360
500х455х175
16
До 30
125
Без ограничений
360
390х350х235
385х480х140
17
12
До 11
50
Без ограничений
360
390х350х235
385х480х140
17
12
До 60
200
До 250
360
480х400х235
385х480х140
25
12
До 160
315
До 200
360
Зависит от расположения и способа охлождения
385х480х140
Зависит от расположения и способа охлождения
12