Interested to Buy Any Domain ? << Click Here >> for more details...
What is basic difference between Soft Starters And VFD
drives?
- 19 Answers
- 51175 Views
- IBM, I also Faced
- E-Mail Answers
Answer Posted / electrical work
Soft starter is used to start motor smoothly by limiting current for that used thyristors to control its voltage. Its change voltage to acquire smoothness of current and torque. Selection of soft starter depend on number of starting, application and motor power. once motor gets its speed, soft starter bypass motor to contactor and monitors the motor current current. When stop is required again soft starter take controlling of motor and stop motor. Both acceleration and deceleration can be set by soft starter. It used where soft stars is required and then motor is running in full speed.
VSD is used V/F controlling method and it gives soft start and current and controlling is done by changing drive output frequency. VSD is used where Variable speed required.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly
why swityard is necessrry requirement in any bis power distributin systems?
How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke
What is the use of lag compensator?
Differentiate between induced emf and self inductance?
Where should the lighting arrestor be placed in distribution lines?
what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?
What is time invariant system?
why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points
Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............
wht is embedded systems? what is new inthis field?
DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?
what is difference between elr and R eartl realy.
how external lighting design? please give examples?
EXPLAIN THE TRANSFORMER MAINTENANCE?
