Wire a 1hp Induction Motor

by ATO Automation

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Intro: Wire a 1hp Induction Motor

This is a 1hp (0.75kW) 3-phase induction motor. It can be connected delta (△) connection and star (Y) connection.

When this induction motor is connected in delta connection, the coil voltage is 220V, and when connected in star connection, the coil voltage is 380V.

STEP 1: Induction Motor in Star Connection

This is ATO induction motor in star connection with voltage 380V.

STEP 2: Induction Motor in Delta Connection

This is induction motor in delta connection with voltage 220V.

STEP 3: Complete Video for 3 Phase Induction Motor Wiring


The video shows the wiring of 3 phase induction motor and driving the motor by VFD.

For more videos, please check our YouTube.

2 Comments

shanzyleon96 10 months ago

Wiring a 1HP (Horsepower) induction motor typically involves connecting it to a power source using the appropriate electrical components. Please note that I'll provide a general overview of how to wire a single-phase and three-phase induction motor.

The specific wiring details may vary depending on the motor and its manufacturer. Always refer to the motor's documentation and follow local electrical codes and safety guidelines when wiring any electrical device.

1. Single-Phase Induction Motor:

A 1HP single-phase induction motor will likely have the following terminals:
  • Two main terminals for power supply
  • Two auxiliary terminals for starting and/or running capacitors (if applicable)
To wire the motor:

  1. Power Supply: Connect the two main terminals to the power supply. The supply voltage and frequency should match the motor's specifications. Typically, single-phase motors use 120V or 240V AC supply.
  2. Starting Capacitor (if applicable): Some single-phase motors may require a starting capacitor to help initiate rotation. If your motor has a starting capacitor, connect one of its terminals to one of the main terminals, and connect the other terminal of the capacitor to the other main terminal.
  3. Running Capacitor (if applicable): Some motors also require a running capacitor to improve efficiency during operation. If your motor has a running capacitor, connect one of its terminals to the same main terminal as the starting capacitor's second terminal. Connect the other terminal of the running capacitor to one of the auxiliary terminals (usually labeled as "C" or "Run"). Connect the remaining auxiliary terminal (usually labeled as "S" or "Start") to the second main terminal.
2. Three-Phase Induction Motor:

A 1HP three-phase induction motor will typically have the following terminals:
  • Three main terminals (labeled as U, V, and W)
  • An earth/ground terminal (usually denoted by the Earth symbol)
To wire the motor:

  1. Power Supply: Connect the three main terminals (U, V, and W) to the corresponding phases of the three-phase power supply. Make sure the supply voltage and frequency match the motor's specifications.
  2. Grounding: Connect the earth/ground terminal to a suitable grounding point to ensure safety.
Always double-check the motor's documentation and labeling to ensure proper wiring. If you are unsure about any aspect of the wiring process, consider consulting a qualified electrician or a professional with experience in handling electrical motors. Additionally, be aware of any safety precautions and guidelines specific to your location when dealing with electrical wiring.

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