DEAR ALL
I have motors ( 10 units )each one is 90kw 380V 50 HZ 1000rpm
but new local pwer is 220v 60 hz
requierd rpm should be 1000
pleas what the beast solution is used frequncy converter or
rewinding all motos or chang all motors
thanks
Answers were Sorted based on User's Feedback
Answer / s.sakthivel perambalur
DEAR NOW AUTOMATIC FREQUENCY DRIVE AVAILABLE UPTO YOUR
REQUIREMENT (SIEMENS MAKE)
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / shoeb
yuo need two cdevice one is auto transformer from which yuo
can adjust the voltage and other is cyclo converters whisc
can vary that 60hz frequency to 50 hz
Is This Answer Correct ? | 3 Yes | 0 No |
VFD/ gear box is mandatory as 1000 rpm can not be the
synchronous speed with supply at 60Hz.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / anjireddy boduggam
It is mandatory to install two devices:- 1) one device for
voltage adjustment 380v/220v 2)second device for HZ
Converter from 50hz/60hz, but as per technical knowledge
better to change them to suitable motors for 380 Volts / 50
HZ as the cost of Transformers (9nos.) and frequency
converters(50 HZ./60 HZ.) is more than the requirement.
Is This Answer Correct ? | 0 Yes | 0 No |
The existing motors cannot be used. Voltage and frequency
is wrong.
The second issue is the speed - 1000 rpm uses a 6 pole
motor at 50Hz. 6 pole at 60Hz is 1200 rpm and 8 pole is 900
rpm.
You will need to change the voltage and frequency.
If the motors are belt drive changing the ratio of the
pulleys will fix the problem of speed.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / k m sarafuzzaman
We Have to instolation A step up transfarmer.
Is This Answer Correct ? | 1 Yes | 5 No |
1. What are the tests to be carried out for CBCT? 2. can measure the secondary resistances? 3. with respect to secondary maximum how much voltage can be applied for IR test.
Which is capital of Indian State Tripura ?
Write the force balance equation of ideal spring element.
what is purpose of using neutral grounding transformer in generators??
AMF (auto mains failure) control for DG sets at home.
Which colour of earthing wire
If Three Runs of 1Cx300 Sqmm Cable between Transformer and VCB and the distance between 100mtrs. what will be total length of Cable and if cost 1500Rs per meter,what would be the total cost
How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?
Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.
whats the differece between Exd and Exe
Draw the circuit of clapp oscillator?
We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.