1) Solar Cells, Wind and Battery Bank arrangement, all appear to be make shift arrangements, considering the fact that the facility you have mentioned is not manned and the atmosphere is hazardous.
2) Your load is very small and voltage drop does not seem to be a problem, however length of...
Your case theoratically appears normal, because in case of earth fault, the outgoing ELCB should trip first and in case of its failure the main should trip. It appears that the thermal protection of the outgoing ELCB had actuated, instead of the Earth Leakage protection (30 A). Otherwise main...
This is normal for a motor current to increase due to dip in applied volts, P = V/I. As Mr jwerthman has mentioned, pl. check the running amps of the motor, it may e very close to rated. The starting times of blowers / fans is higher as compared to pumps. If possible try to pinch inlet/ outlet...
Your motors are under protected with fuses only. The ventilation of inverters depend on the cooling and ventilation thru fans. Fans also carry away the carbon particles from electronic circuitry, which are generated by effect of heat on insulation. Therefore you should not neglect the importance...
I assume followings.
1) The fan motors are 3 - phase Induction type.
2) You have been using time delay fuses.
The vendor is trying to protect your five fans with fuses. Since the value of fuses is very close to the running amps of the fans therefore they get heated up and ultimately get...
All VFDs have watts and ampere ratings, specified by the manufacturer.
Damage can occur to the motor if the running watts exceed the name plate rating of the drive.
Similarly each drive has built in thermal protection. You must check the current you draw from the drive against its name plate...
Mr Electricpete is right. I haven't seen idle watts on name plate of the motors. Anyway this must be no load watts. Lock rotor amperes are some times mentioned on name plate as "LRA ___".
Hey Electricpete !
Submersible pupms are generally located at far off locations or in other words the length of power cable is very much. As I have seen voltmeters are installed in Substations while Ammeters are installed in field. The terminals of submersible motors are also mostly...
