Single Phase Motor Application

Description

TeSys Tera system can support the three-phase or single-phase motor.

In starter settings, select the required type of motor as three-phase or single-phase from the parameter setting. Default configuration will be three-phase.

Wiring Diagram

Example of wiring diagram of the Direct Online mode with single-phase motor:

Enabled Functions

In single-phase mode, following functions are enabled:

• Metering functions:

  • Current measurement: L1 RMS Current, Measured Ground Current

  • Voltage measurement: VL-1N RMS voltages, frequency

  • THD measurement: L1-N Voltage THD, l1 current THD

  • Power and energy measurements: Power factor, Total active power, total reactive power, Total apparent power, Total active energy, Total reactive energy, Total apparent energy.

• Protection functions:

  • Motor Protection function:

    • Thermal Overload

    • Stall Rotor

    • Locked Rotor

    • Temperature protection

  • Current based protection:

    • Definite Time Overcurrent

    • Normal Inverse Overcurrent

    • Short Time Overcurrent

    • Measured Ground Trip

    • Phase Under Current

  • Voltage based protection:

    • Phase Under voltage

    • Phase Over voltage

  • Power protection function:

    • Under Frequency

    • Over Frequency

    • Under Power

    • Over Power

    • Under Power Factor

  • Digital Input interlock

  • AI protection

  • Motor Starter Functions:

    • DOL

  • Motor control function:

    • Voltage Dip

    • Maximum Number of Starts

Disabled Functions

In single-phase mode, following functions are disabled:

• Metering functions:

  • Current measurement : L2 and L3 RMS currents, current phase sequence, average current and current imbalance. 

  • Voltage measurement : VL2-L3 and VL3-L1 RMS voltages, voltage phase sequence, average voltage and voltage Imbalance. 

  • Calculated ground current.

  • THD measurement of L2 and L3 current and voltage. 

• Protection functions:

  • Current based protection:

    • Current Imbalance

    • Current Phase Loss

    • Current Phase Reversal

  • Voltage based protection:

    • Voltage Imbalance

    • Voltage Phase Loss

    • Voltage Phase Reversal

  • Calculated ground trip protections.