PURPOSE:To enable the ideal and smooth acceleration by providing two or more acceleration torque setting functions in the circuit for controlling the thyristor gates connected to one phase of the three-phase induction motor and changing the acceleration torque during the acceleration. CONSTITUTION:When ...
Three phase induction motor when directly started from 3-phase supply, the current requirement is very large i.e. 5 - 7 times that of rated value. In order to mitigate the adverse effects of starting torque and high inrush currents, alternate method is adopted i.e. to use TRIAC based ...
This high current is also knows as inrush current. This inrush current may also damage the motor winding’s permanently. So we need a device which can control the starting high current of three phase induction motor. Smooth starter or soft starters are usually used to control this inrush cu...
STAR-DELTA STARTER FOR THREE-PHASE INDUCTION MOTOR 优质文献 相似文献Startup and Fault Tolerance of the SRM Drive with Three-Phase Bridge Inverter When a three-phase SRM (switched reluctance motor) is driven by a three-phase bridge inverter, the phases of SRM should be connected in the same ...
Mains voltage:Three-phase AC 380V (± 15%);Mains frequency:50Hz/60Hz(± 2%);Applicable motor:three phase motor;Pollution degree:3;Protections:Over load/Over voltage/Over Current;Protection class:IP20;Cooling:Natural;Shock resistance:shock less than 0.5g;
Phase 3 Main Circuit Rating Voltage 110~660V Main Circuit Rating Current 12A Other attributes Place of Origin Zhejiang, China Brand Name GWIEC Model Number LE1-D12/QCX2 Suitable for frequency 50/60HZ OEM: YES Electricity Type: AC electrical life: ...
ZJR2 series soft starter can work with three-phase,AC squirrel cage induction asynchronous motor. The voltage is 320V~460V, 50HZ/60HZ and the current is 1200A and below. ZJR2 series soft starter are in the process of motor starting and running ...
It controls controllable thyristor module, realizes soft starting & stopping of three-phase AC induction motor, and has wide range of protection functions e.g. overload, input phase failure, output phase failure, load short-circuit, starting limiting overtime, over-...
extensively as compared to the other type of starting methods of the induction motor. A star delta is used for a cage motor designed to run normally on the delta connected stator winding. The connection of a three-phase induction motor with a star delta starter is shown in the figure below...
It is provided with a timer for automatic changeover of star-delta to reduce the voltage and current of motor starting. Type Rated operating current (A) 3-phase motor capacity (KW) AC-3 Loaded 220V 380V 415V 440V LC3-D09 9 4 7.5 7.5 7.5 LC3-D12 12 5.5 11...