What is motor name plate?
The nameplate lists the maximum ambient temperature at which the motor can operate and still be within the tolerance of the insulation class at the maximum temperature rise. It is often called “AMB” on the nameplate and is usually given in °C. Altitude.
What is the importance of name plate of motor?
Much of the information you need to identify an electric motor is contained on the motor’s nameplate. The nameplate also provides some basic information about a motor’s operating characteristics. Proper motor selection is extremely important for safe, efficient, and reliable motor operation.
Which power is mentioned on a name plate of a motor?
Which power is mentioned on a name plate of a motor? Explanation: Name plate of the motor shows rated values i.e. rated speed, rated current, rated voltage. It also shows output power available at shaft when all other quantities are set to rated values.
Why motors are rated in kW?
Motor is rated in kW since it specifies the capacity of the motor to drive its load. It is the active power (kW) that is of interest when a motor drives a load. The motor converts the active power that it draws from the mains into mechanical power that the load consumes/demands. Thus, a motor is rated in terms of kW.
What are the types of motors?
Types of Electric Motors
- 1). DC Shunt Motor.
- 2). Separately Excited Motor.
- 3). DC Series Motor.
- 4). PMDC Motor.
- 5). DC Compound Motor.
- 1). Synchronous Motor.
- 2). Induction Motor.
- 1). Stepper Motor.
Why is motor rated in kW?
What is motor rated power?
Rated power is the power which a machine or device can deliver under design voltage and frequency conditions. In an electrical machine or motor , this means the physical power which can be delivered under these conditions.
Which motor is used in centrifugal pump?
The applications of different DC motors are: DC shunt motor: It is an almost constant speed motor. Hence it is used for driving constant speed line shafts, lathes, centrifugal pumps, small printing presses, paper making machines, etc.
What is the need of 3 point starter?
A three-point starter is an electrical device, used for starting as well as maintaining the DC shunt motor speed. The connection of resistance in this circuit is in series which decreases the initial high current and guards the equipment against any electrical failures.
What are 4 common types of motor enclosures?
The Most Common Types Of Electric Motor Enclosures
- The most common types of enclosures are:
- Open Drip Proof (ODP)
- Weather Protected (WP1 / WP2)
- Totally Enclosed Fan Cooled (TEFC)
- Totally Enclosed Non-Ventilated (TENV)
- Totally Enclosed Air Over (TEAO)
- Totally Enclosed Forced Ventilated (TEFV)
- XP (Explosion Proof)
How do I know if my engine is inverter duty?
Motor insulation systems that are rated for inverter use will be specified on the motor nameplate (or a sticker). These systems should have wire rated for a minimum of 1600 volt spikes, F or H class insulation, and will be processed with 100% sold resin in a vacuum pressure impregnation (VPI) system.
What do you need to know about a motor nameplate?
Nameplate-defined parameters for the motor such as power factor, efficiency, torque and current are at rated voltage and frequency. When the motor is used at other voltages than the voltage indicated on the nameplate, its performance will be affected.
What does the Cont mean on a motor nameplate?
Duty This parameter defines the length of time during which the motor can carry its nameplate rating safely. In many cases, the motor can do it continuously, which is indicated by an S1 or “Cont” on the nameplate. If nothing is indicated on the nameplate, the motor is designed for duty cycle S1. 11. Insulation class
What does CT and VT mean on a motor nameplate?
CT stands for Constant Torque and VT stands for Variable Torque. If these ratings are on your motor nameplate it typically means your motor is rated for inverter use. Consult your manual for more information. Duty is the length of time a motor can run without a cooling period. Most industrial motors are rated for continuous duty.
How is stalling torque calculated on a motor nameplate?
The maximum torque of the motor, the stalling torque (Tk) is twice the size of the rated torque: Finally, the moment of inertia and the weight of the motor are stated on the motor nameplate. The moment of inertia is used for calculating the acceleration torque.