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Motor Start Analysis

CareLabs offers organizations in Brazil a specialized Motor start study and analysis solution. The major objective of our motor start analysis service is to assess the atypical effects of starting a big motor.

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Aside from correctly connecting the electric motor to the line voltage, there are various other criteria to evaluate before starting an electric motor, such as nuisance tripping, high nominal currents, and flickering or fading light, all of which signal a malfunctioning power system.  CareLabs will dispatch skilled professionals to your area to gather current and historical motor installation data. Then, utilizing the collected data and manufacturer input, calculations are done to estimate future implications, and recommendations are made to mitigate the effects. 

Analyzing motor starting strategies may be performed using both static and dynamic simulation methods. We are particularly concerned with research that imitate motor starting circumstances, such as: 

  • Modeling the measured starting impedance of the electric motor yields the load flow solution.
  • For pre-fault short circuit conditions, the short-circuit approach is utilized, whereas the voltage drop method is utilized for motor starting currents.
  • The dynamic model of the electric motor may be used to determine the impact of when an accurate dynamic model of the electric motor circuit and load-torque characteristics is available. motor starting in a conventional transient stability procedure.
  • When detailed dynamic model information for the electric motor is not available, simulations of transient stability can be utilized.

Motor Start Analysis is Required in Brazil:

The utilization of motors in current industrial systems and the size of electric motors are expanding exponentially. Starting a big motor connected to a line can interrupt the electric motor, locally connected loads, and electrically distant buses. When starting an electric motor, the terminal voltage should be at or above 80% of the rated voltage. Voltage difference influences the load torque of a motor because the square of its terminal voltage is directly proportional to the torque. If the voltage drop is significant, machines in operation may reach their breaking torque and decelerate or stop. Voltage drops impacts electrical equipment, sensitive control devices, and lighting loads, among other things. In addition, high beginning current decreases terminal voltage, which causes an increase in the current drawn by all systems supplying a continuous load. Defective undervoltage relays have also been discovered. 

When Should a Motor Start Analysis Be Performed?

  • Prior to or during the acquisition of a huge motor.
  • If no generator is available and the motor rating exceeds 30 percent of the supply transformer’s base KVA rating, the supply transformer will trip
  • If the system is fueled exclusively by the generator and the motor rating surpasses 10 to 15% of the generator’s KVA rating, the generator should be replaced.
  • A motor start study may be necessary if a large number of motors start simultaneously for an industrial operation.
  • Smaller power systems often have low capacity, which magnifies voltage drop difficulties when starting a motor with a large capacity. The analysis of motor beginning facilitates comprehension of the output of tiny generator-containing systems.

When Should a Motor Start Analysis Be Performed?

  • Prior to or during the acquisition of a huge motor.
  • If no generator is available and the motor rating exceeds 30 percent of the supply transformer’s base KVA rating, the supply transformer will trip
  • If the system is fueled exclusively by the generator and the motor rating surpasses 10 to 15% of the generator’s KVA rating, the generator should be replaced.
  • A motor start study may be necessary if a large number of motors start simultaneously for an industrial operation.
  • Smaller power systems often have low capacity, which magnifies voltage drop difficulties when starting a motor with a large capacity. The analysis of motor beginning facilitates comprehension of the output of tiny generator-containing systems.

Analysis of Motor Start Analysis Benefits:

Analysis of motor launch It is advantageous to use a motor or starting method with good speed-torque characteristics. To avoid exceeding the equipment’s torque limitations, any unusual loads must be accelerated under supervision. The motor’s shaft functioning may be analyzed at any moment by performing a motor start study. Consequently, it assists in calculating the equipment’s acceptable torque limitations. Motor starting studies determine the machine’s voltage and whether the electric motor can start and accelerate.

CareLabs offers motor start investigations by skilled professionals to further examine your electric motor. In addition to, we offer motor start analysis services in all major cities in Brazil such as São Paulo, Rio de Janeiro, Brasília, and Salvador. Reserve your motor start study now or contact us for a quote! 

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