Motor Start Analysis
Businesses all throughout Thailand may take use of CareLabs’ specialist Motor start study and analysis service. Our motor starts analysis service’s main objective is to assess the peculiar effects of starting a big motor. When turning on an electric motor, it is important to consider several aspects, such as successful line voltage connection, nuisance tripping, high nominal currents, and flickering or dimming of the light, all of which are signs that the power system is not operating effectively.
To gather data on the most recent and previous motor installations, CareLabs will send knowledgeable specialists to your site. Calculations are then done to estimate future impacts, and ways to reduce the effects are suggested, utilizing the information gained and input from the manufacturer.
Motor starting methods may be examined using static and dynamic simulation methods. Our main area of interest is dynamic motor beginning research that simulates motor starting scenarios like:
- To get the load flow solution, the measured starting impedance of the electric motor is simulated.
- Short-circuit technique calculations are utilized for pre-fault short circuit conditions, while voltage drop calculations are used for motor starting currents.
- A typical transient stability approach may be used to determine the impact of motor starting if an accurate dynamic model of the electric motor circuit and load-torque characteristics is available.
- Transient stability simulations can be employed when there is a lack of thorough dynamic model data for the electric motor.
Thailand Needs Motor Starting Analysis:
The use of motors in modern industrial systems and the size of electric motors is increasing exponentially. Starting a large engine connected to the line can disrupt electric motors, locally connected loads, and electrically distant buses. When starting the motor, the terminal voltage must be at least 80% of the rated voltage. Since the square of the terminal voltage is directly proportional to the torque, the voltage difference affects the load torque of the motor.
If the voltage drop is significant, a running machine may reach a breaking point and slow down or stop. Voltage drops affect electrical equipment, sensitive control devices, and lighting loads, among others. In addition, the high initial current reduces the terminal voltage and increases the current consumption of all systems supplying continuous loads. Undervoltage relay faults are also detected.
When Should an Engine Start-up Analysis Be Performed?
- Before or during the acquisition of a huge engine.
- Supply transformer trips when generator is not available and motor rating exceeds 30% of supply transformer base KVA rating.
- If the system is powered solely by the alternator and the engine output exceeds 10-15% of the alternator’s KVA rating, the alternator should be replaced.
- When starting many motors simultaneously in industrial operation, it may be necessary to investigate motor starting.
- Smaller power systems often have smaller capacities, making it difficult to drop voltage when starting large motors. Engine start analysis helps you understand the performance of small generator-based systems.
Motor Start Advantage Analysis:
Motor Start Analysis It is advantageous to use a motor or starting method with good speed-torque characteristics. Abnormal loads must be accelerated under supervision to avoid exceeding the torque limits of the device. The engine wave function can be analyzed at any time by an engine start study. As a result, it helps to calculate the permissible torque limit of the equipment. The engine start test determines the voltage of the machine and whether the electric motor can start and accelerate.
CareLabs offer engine starting inspections by qualified professionals to take a closer look at electric motors. In addition to Bangkok, Chiang Mai, Samut Prakan, Udon Thani, and Nonthaburi, we offer start analysis in all major Thai cities. Book your introductory motor skills course now or contact us.
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