Answer / raji

IN AN ELECTRICAL CIRCUIT IF THE CURRENT EXCEEDS THE
SPECIFIED LEVEL(FULL LOAD CURRENT) IS CALLED OVER CURRENT.
TO PROTECT THE MOTOR OR ANY ELECTRICAL EQUIPMENT FROM OVER
LOAD(OVER LOAD CAUSES WINDINGS MAY BURN OUT OPEN ETC.,)SOME
CIRCUITS ARE PROVIDED TO PROTECT THE MOTOR THIS IS CALLED
OVER LOAD PROTECTION..eg., IN DOL STARTER OLR IS PROTECT
THE MOTOR FROM THE OVER LOAD

Answer / bhatt

Over current and over load protection might be same in
electrcal engg. point of view.

Answer / harry

Overcurrent protection is protection against excessive
currents or current beyond the acceptable current rating of
equipment. It generally operates instantly. Short circuit is
a type of overcurrent. Magnetic circuit breakers, fuses and
overcurrent relays are commonly used to provide overcurrent
protection.

Overload protection is a protection against a running
overcurrent that would cause overheating of the protected
equipment. Hence, an overload is also type of overcurrent.
Overload protection typically operates on an inverse time
curve where the tripping time becomes less as the current
increases. Overload relays as well as “slow blow” fuses are
commonly used to provide overload protection.

Some devices provide both overcurrent and overload
protection. A thermal-magnetic circuit breaker has both
thermal (overload) and magnetic (overcurrent) elements. Both
elements operate as described above. Likewise the dual
element fuse has both instantaneous and inverse time
characteristics in the same fuse providing both overcurrent
and overload protection.

Answer / manas

Over current:
The full load current capacity, if it exceeds the rated full
load current it is over current.
Over Load Protection:
Protection given to the electrical equipment to safeguard it
from buring during the fault level or overloading.By
performing tripping action.

Answer / harry

Overcurrent protection is protection against excessive
currents or current beyond the acceptable current rating of
equipment. It generally operates instantly. Short circuit is
a type of overcurrent. Magnetic circuit breakers, fuses and
overcurrent relays are commonly used to provide overcurrent
protection.

Overload protection is a protection against a running
overcurrent that would cause overheating of the protected
equipment. Hence, an overload is also type of overcurrent.
Overload protection typically operates on an inverse time
curve where the tripping time becomes less as the current
increases. Overload relays as well as “slow blow” fuses are
commonly used to provide overload protection.

Some devices provide both overcurrent and overload
protection. A thermal-magnetic circuit breaker has both
thermal (overload) and magnetic (overcurrent) elements. Both
elements operate as described above. Likewise the dual
element fuse has both instantaneous and inverse time
characteristics in the same fuse providing both overcurrent
and overload protection.

How many wall/floor flange will i use in bus duct system if we have in our design a 35th floor building.

0 Answers  

how to make an earthing certificate

0 Answers  

why in isolation transformer we dont get any shok?

2 Answers  

Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

0 Answers  

what happen if we give 220 volts dc supply to d bulb r tube light?

9 Answers   NHPC,

please tell me how a surge protector work on a DC 48Volt.? please describe briefly.

0 Answers  

What is Ten Delta Test ?

8 Answers   Areva,

what are difference between indoor and out door substation

1 Answers  

why grid failure happens?

1 Answers  

WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

0 Answers  

DG lube oil and waste oil how to dispose outside and there is any authorised vendors will be there for this.

2 Answers  

What is the difference between Earth and Neutral?

2 Answers