Engineering tools
FREE CALCULATORS FOR ELECTRICAL & AUTOMATION WORKElectrical Resistance & Heater Bank
Compute ohms (Ω), amps (A), phase current and power for 1-Phase, 3-Phase Star (Y) & Delta (Δ) heating elements.
OPEN →Busbar Current Rating & Ampacity
Calculate Copper & Aluminum rectangular busbar current carrying capacity (Amps), cross-section (mm²) and temperature rise.
OPEN →Short Circuit Current & Fault Level
Compute 3-phase symmetrical short-circuit current (kA) and recommended breaker Icu capacity.
OPEN →Cable Sizing & Voltage Drop
Calculate voltage drop and percentage drop for Copper and Aluminum electrical cables.
OPEN →Power Factor Correction & Capacitor Bank
Calculate required kVAr and capacitor bank microfarads (µF) to avoid reactive penalties.
OPEN →Control Panel Thermal & Cooling
Determine enclosure heat dissipation, filter fan CFM airflow, and panel AC BTU rating.
OPEN →Pneumatic Cylinder Force & Air Consumption
Compute theoretical push/pull forces (N / kgf) and continuous air consumption (L/min).
OPEN →Modbus RTU / TCP Frame & CRC-16
Generate and parse Modbus RTU hex query frames with instant 16-bit CRC checksum calculation.
OPEN →Motor Full-Load Current
kW → amperes for single- and three-phase motors, with power factor and efficiency.
OPEN →Power Unit Converter (kW ↔ HP ↔ kVA)
Convert power units instantly between Kilowatts, Horsepower and Kilovolt-Amperes.
OPEN →VFD Sizing & Braking Resistor
Determine VFD overload ratings and braking resistor specifications based on motor kW.
OPEN →Transformer & Motor Starting
Compute transformer nominal currents and estimate motor starting peaks (DOL, Star-Delta, Soft Starter).
OPEN →S7 Analog Scaling (0…27648)
Siemens raw value ↔ engineering units converter — the 27648 scale, both directions.
OPEN →Generic Analog Scaling
4-20 mA or 0-10 V ↔ engineering units standard linear scaler.
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