Category Archives: EE

EE07: DC MOTOR STARTING CURRENT, BACK EMF, ARMATURE CURRENT AT SPECIFIC SPEED CALCULATOR

SOURCE VOLTAGE:V

ARMATURE RESISTANCE:ohm

MOTOR SPEED CONSTANT:V/rpm     If you don’t know, you can find this. You need to divide voltage generated to speed at that voltage.

MOTOR SPEED: rpm


RESULTS

STARTING CURRENT: A

BACK EMF: V

ARMATURE CURRENT RUNNING AT :A

EE06: BUSBAR CURRENT CARRYING CAPACITY ESTIMATOR

This is an estimator for busbar current carrying capacity. For the exact results please refer to your busbar provider’s data.

   Busbar current carrying capacity estimator
BUSBAR WIDTH[mm]:    

BUSBAR THICKNESS[mm]:



RESULT
Estimated current carrying capacities:

Copper busbar: A

Aluminium busbar: A

Iron busbar: A

Silver busbar: A

EE06 – MOTOR RATED TORQUE (FULL LOAD TORQUE) + MOTOR STARTING TORQUE

   Motor rated torque (Full Load Torque) calculator
POWER:    

RPM:

       

RESULT
Motor rated torque (Full load torque):

Motor starting torque:

EE02:FUSES BY MARKING

Fuse selection is important in an electrical circuit, because a very rapid acting fuse might open in 0.1 seconds, a fast acting fuse might open in one second, and a slow acting fuse might take tens of seconds to open if a current of 20A was flowing through a fuse rated at 10A.

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EE99 – CAPACITOR VALUE READING TABLE

Capacitor manufacturers generally give the value of capacitor on capacitor but, in some cases there may be not enough space. In that case, they use simple notation. If it is 2 digits number then no issues. You can say the value seen is the value on capacitor. But if it has 3 digits then the first two digit you take as is and remaining last digit is the number of zeros following that first two digits. See table below;

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EE01 – 0,4KV SYSTEMS CABLE CROSS SECTION ESTIMATOR

Just enter distance and power to get cross sectional area and amperage estimation

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