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

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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

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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

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   Motor rated torque (Full Load Torque) calculator
POWER:    

RPM:

       

RESULT
Motor rated torque (Full load torque):

Motor starting torque:

EE05 – MOTOR RATED TORQUE FROM HP IN LB-FT (FULL LOAD TORQUE) CALCULATOR

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   Motor rated torque (Full Load Torque) calculator
HP:
RPM:

       

RESULT
Motor rated torque (Full load torque): lb-ft

Formula is motorRatedTorque = (hp/rpm)*5252 lb-ft

EE04: KW <-> HP CONVERSION

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Tool to convert kW <-> HP

Continue reading EE04: KW <-> HP CONVERSION

EE03: 3 PHASE CONTACTOR SIZING

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if you enter KW, volt and power factor, the tool will return min contractor size.

Roughly estimates size of the main, star and delta contactors.

Power:kW
cosphi:
Voltage(line to line):V

Results


Full load current of the line:

The rating for main contactor:

The rating for star contactor:

The rating for delta contactor:


TRUST ME I AM AN ENGINEER

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This is a popular saying that is used ironically. First was very popular with the vid on YouTube by TheVilkaz. See below;

Continue reading TRUST ME I AM AN ENGINEER