Question about inductive motor and load filter.

In summary, a 3 phase 3 pole inductive motor with a VFD is tripping the breaker before ramping up, despite being set to allow inrush current. The motor is located 400 feet away from its busbar and after a load filter was installed, there have been no further issues. It is unclear if the load filter is a power correcting device and it is possible that the motor was tripping due to the apparent power on the return part of the sine wave exceeding the breaker's trip limit. More information, such as a schematic of the setup, is needed for a definitive answer.
  • #1
Starwatcher16
53
0
I have a 3 phase 3 pole inductive motor with a VFD that is tripping the breker even before it ramps up. The breaker is set to allow its inrush current without tripping.

There is about 400 feet of wire between this motor and its busbar.

After a load filter was installed for this motor, there have been no problems with it.

If this load filter a power correcting device? Is the reason the motor was tripping that the apparent power on the return part of the sin wave exceeding the breakers trip limit?
 
Engineering news on Phys.org
  • #2
I don't know what you mean by load filter.

You need to provide a schematic of the entire setup, including load, filter and trip sensors before we could give a definitive answer.
 

1. What is an inductive motor?

An inductive motor is a type of electric motor that uses a magnetic field to convert electrical energy into mechanical energy. It is commonly used in appliances, industrial machinery, and other devices.

2. How does an inductive motor work?

An inductive motor works by using a stator, or stationary coil, to create a rotating magnetic field. This field interacts with the rotor, or moving part of the motor, to produce torque and rotation.

3. What is a load filter?

A load filter, also known as a power line filter, is a device that is used to reduce or eliminate electromagnetic interference (EMI) in electronic equipment. It works by filtering out unwanted noise or signals from the power supply.

4. Why is a load filter necessary for an inductive motor?

An inductive motor can generate high levels of EMI due to its use of magnetic fields. This interference can affect the performance of other electronic devices in the vicinity. A load filter is necessary to reduce this interference and ensure proper functioning of the motor and other equipment.

5. How do you choose the right load filter for an inductive motor?

The right load filter for an inductive motor depends on various factors such as the type and size of the motor, the amount of EMI being generated, and the specific application. It is important to consult with a qualified engineer or refer to the manufacturer's recommendations when selecting a load filter for an inductive motor.

Similar threads

Asymmetrical grounding of a 3 phase motor being run on a 1 phase supply
    • Electrical Engineering
Replies
7
Views
1K
Induction motor windings, number of turns per phase and per pole
    • Electrical Engineering
Replies
2
Views
629
Repulsion induction motor question
    • Electrical Engineering
Replies
7
Views
1K
Convert 1 phase to 3 phase by using an old washing machine
    • Electrical Engineering
Replies
19
Views
2K
Sizing the start capacitor for an induction motor
    • Electrical Engineering
Replies
2
Views
2K
AC Induction motor startup current
    • Electrical Engineering
Replies
6
Views
3K
AC motor rotary capacitor soft start
    • Electrical Engineering
Replies
5
Views
973
Variable-frequency drive (VFD) output without load (motor)
    • Electrical Engineering
Replies
9
Views
3K
Finding the Torque vs RPM curve for a 3-phase AC induction motor
    • Electrical Engineering
Replies
4
Views
2K
Generator tripping on ground fault during load test
    • Electrical Engineering
2
Replies
38
Views
5K

Hot Threads

Recent Insights

Back
Top