Answer / prakash

If your concerns with domestic water pump dry run control,
then you can use a floating switch at level point that can
be connected to series with DOL starter if already installed.

Answer / jimmy

Just put level switch NC contact in series with overload
contacts in the Starter Circuit.

Answer / kamal

By using under current relay , setting is no load current,
below this level it trip.

Answer / parth belani

We can protect a pump from no load running by using a
minimum recirculation line. This line connects outlet with
the main tank or the inlet. so there will always be some
minimum flow through the pump.

Answer / raghu

Use a dryrun protection

Answer / sandip paithankar

put a moisture sensor in land which need to wet on starting and ending point of it.then give to transistor then micro controller do if else program and understand the condition of land it may wet or dry.then give command to relay to operate the water pump    

Answer / ks

by using the level transmitter and with out plc with some
no nc additional elements in the contactor it is possible
to control.

Answer / subrat.das1985

i think we can over come from this problem by using proximity sensor.or by using timer .

Answer / mkk

by using level transmitter. and use it in plc to switch off
the pump when level remains 20 %.

clarify types of motor operated valves and advantages

0 Answers  

why the motor running in delta connection ? it can be in star?

13 Answers   NTPC,

what is the difference between surge arrestor and lightning arrestor ?

6 Answers  

what is the purpose for open delta connection in potential transformer

2 Answers  

can i connect REF and Differencial relay in 1 CT core for transformer protection?

0 Answers  

When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

2 Answers  

Star Delta Diagram with full description

0 Answers   SKS Microfinance, Syscom,

what is the meaning of ceiling voltage in Generator exciter?

1 Answers  

why high speed tripping relay is used in protection circuit why not normal relay

0 Answers  

hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers  

different aspects of voltage stability

0 Answers  

What is UPS?

14 Answers   HSL,