Soft or hard starters protect your motor from the sudden inrush of current. Along with protection, they increase motor life. However, both types of starters work differently to do so. Those differences are highlighted in this piece of information which will help you understand which starter is suitable for your AC compressor. Let's begin by understanding hard starters first.

What is a hard starter?

Hard starters are most suitable for large AC units in residential or commercial buildings. It reduces the time taken for the system to get started. It comprises a capacitor and a start relay. You can switch on the hard starter to run the capacitor with two wires. Installing a hard starter is incredibly easy and quick. Are you curious to know how hard starters work? Read on.

How does a hard starter work?

A hard starter stores energy in a capacitor. When you turn on the motor, the energy from the capacitor is released, which joins the incoming inrush current. This kicks out the initial hiccups in the motor and provides it with a smooth start.

The initial current supplied to the motor is up to four to eight times more than the current required in the running stage. The initial additional power can overheat the system and shorten the motor's lifespan. The hard starter reduces the amount of electrical current needed to start your AC. While a hard starter can protect your motor, it still allows a lot of power which can damage the motor. All of this led to a reduction in motor lifespan.

Soft starters work differently than hard starters. They contain silicon-based rectifiers (SCRs) or thyristors to limit the voltage effectively. SCR is turned on when the motor starts and limits the voltage. This phenomenon lets the motor accelerate while SCRs begin to relax.

When should you install a soft start kit?

You can install a soft start when you need to control torque and starting current for a smooth start and stop a motor. A soft start can be a good option for conveyors, fans, and compressors. Soft starters can also be used in RVs to power AC units without damaging small generators. Learn more about the benefits of a soft starter through the below points-:

  • Improve the efficiency of electrical appliances

All heavy equipment draws reactive current from the power, which decreases its efficiency. But, when you attach a soft starter to heavy equipment like a compressor, pump, or motor, the capacitive power compensates for the reactive power. This reduces power losses and improves the equipment's overall performance.

  • Save on electricity bills

As the soft starter reduces the magnetic effect, your appliances don't draw unnecessary power from the source. This happens because of capacitors which store energy. This leads to an overall reduction in electricity bills.

  • Avoid wear and tear

How often do you go out to repair your equipment? Wear and tear happen when your appliance has to bear the initial inrush current. The soft starters also eliminate this issue and allow you to use your appliances for years.