Calculated Industries 5070-B User Guide User Manual

Page 9

8 — e

lectri

alc

(cont’d)

 

efficiency (eff %) — Enters or calculates the

percent ratio between real power (Watts) and

Theoretical Horsepower. Default value is 100%.

Entered or calculated Efficiencies greater than

100% will result in an error.

 

Kilowatt–Hours to BtU (Kw-hr ► Btu) —

Calculates BTU (British Thermal Unit) based on

an entered Kilowatt-Hour value.

 

BtU to Kilowatt–Hours (Btu ► Kw-hr) —

Calculates Kilowatt-Hours based on an entered

BTU (British Thermal Unit) value.

 

parallel resistance (par res) — Calculates

total Resistance based on an entered series of

Parallel Resistor values.

Motor Keys
The ElectriCalc Pro can be used to determine motor Full-Load Current

(Amps) based on entries for Motor Horsepower (HPmotor), Phase

and Voltage. You can also find an equivalent Motor Horsepower if you

have entered Voltage and Full-Load Current values. Only HP Motor

and Voltage entries as defined by NEC Tables 430.247, 430.248 and

430.250 can be used to determine motor loads.

 

induction/Synchronous/Dc Motor toggle

(ind/Sync/Dc) — Toggles between Induction,

Synchronous, and Direct Current Motor Types.



Motor Horsepower — Enters or calculates

Motor Horsepower.

 

Starter Size (Starter) — Displays the Starter

Size (from NEMA publication ICS 2-1988 Tables

2-327-1 and 2-327-2) based on the Phase,

Voltage, and Motor Horsepower settings.

Note: Horsepower values not identified in NEMA

tables will cause the calculator to round up to the

next larger Starter Size in the table.