Calculated-industries 5070-A User Guide Manual do Utilizador descarregar pdf (Página 48)

User's GUide — 47

(cont’d)

STaRTER SIZE

What NEMA size Starter is required for a 575 Volt, 3Ø, 20 HP

Induction motor?

KEYSTROKE DISPLAY



1. Set to 3-phase:



(3Ø

)

3Ø 3 PH

2. Enter Volts:



VOLT 575.

3. Enter HP:



IND* 20. HP

* If IND is not shown, press   until IND is displayed in the upper left

area of the display.

4. Solve for Starter Size:



(Starter

)

STAR SIZE 2

OVERlOaD PROTECTION SIZE

What Overload Protection device size is required for an Induction

motor with a nameplate Current rating of 19.2 Amps and a 1.0

service factor? What is the required Overload rating at 125% (for a

1.15 service factor)?

KEYSTROKE DISPLAY



1. Enter nameplate Current:



AMPS 19.2

2. Find Overload size:



AMPS 22.08 o l

3. Display percent used:



%FLC 115. %

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Calculated-industries 5070-A User Guide Manual do Utilizador Página 48