Bagaimana Membaca Name Plate Dc Motor

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What is the name plate of motor?

The common language of the motor nameplate enables installers, operators and maintenance personnel to understand and recognize the type of motor and that motor’s requirements quickly and easily. The nameplate defines a motor’s basic mechanical design, electrical performance and dimensional parameters.

What does FR mean on a motor nameplate?

Frame Designation (FR) – this is typically a two or three digit number followed by one or more letters that identifies important mounting dimensions. Manufacturers Type (TYPE). Manufacturers may use the TYPE block to designate a product family or some other qualifier that identifies the motor’s fit or function.

What is IM in motor nameplate?

The international standard IEC 34-7 gives the mounting type of the motor in the form of two letters, IM (International Mounting) and four digits. Figure 6 shows some of the most common designs. The motor slip can be calculated, since the nameplate gives the rated speed and frequency.

What is the difference between LRA and FLA?

FLA: Full-Load Amps: Amount of amperage drawn when motor is working at rated horsepower. RLA: Running-Load-Amps: Same as FLA. LRA: Lock-Rotor-Amps: A motor draws a surge of amperage when it starts to get the rotor rotating and to achieve the rated horsepower.

What is nameplate rating?

Nameplate rating means the maximum sustained power-generating capacity of the Generation Facility, including the continuous power output rating of any Energy Storage System.

What is nameplate efficiency?

Efficiency is the motor’s output power divided by its input power multiplied by 100. Efficiency is expressed as a percentage. Efficiency is guaranteed by the manufacturer to be within a certain tolerance band, which varies depending on the design standard, eg IEC or NEMA.

What is electrical nameplate?

Definition: The normal maximum operating rating applied to a piece of electrical equipment. This can include Volts, Amps, horsepower, kW, or any other specific item specification for the equipment.

What does TC stand for on a motor frame?

• Totally Enclosed Fan Cooled (TEFC) enclosure. • NEMA TC-frame (C-face) and T-frame motors. • Cast iron frame with ribbed design for maximum cooling. • Solid full frame length cast iron mounting feet. • Steel fan cover.

What does code K mean on a motor?

Standard 3 phase motors often have these locked rotor codes: less than 1 hp: Locked Rotor Code L, 9.0 – 9.99 kVA. 1 1/2 to 2 hp: Locked Rotor Code L or M, 9.0 – 11.19 kVA. 3 hp : Locked Rotor Code K, 8.0 – 8.99 kVA. 5 hp : Locked Rotor Code J, 7.1 – 7.99 kVA.

What does 1ph mean on a motor?

In electrical engineering, single-phase electric power (abbreviated 1φ) is the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison. Single-phase distribution is used when loads are mostly lighting and heating, with few large electric motors.

How do you read a motor plate?

The RPM listed on the nameplate is the shaft speed for the motor. The speed of the motor is directly related to the frequency of the line voltage and the number of poles in the motor. At 60 Hz, a 4 pole motor will rotate at approximately 1800 RPM (7200/4 poles).

How are DC motors rated?

DC Motor Rating DC Motors are typically rated in terms of : Rated voltage: The operating voltage on the input side of the motor. Rated power: Power (in horsepower – hp or watts) that the motor is designed to deliver to the load (i.e., output power) for continuous operation.

How do I find my motor details without nameplate?

Use a strobe tachometer to determine motor RPM and then set up a generic motor in the database for that RPM. If loading cannot be provided by the operator use the acquired data and RPM to approximate loading. You can view the power factor for a value around 88 to 92 to approximate full load.

What are the types of motor?

We know there are generally two types of motors, AC motor, and DC motor. AC motors are flexible for speed control and demand low power during start. On the other hand, DC motors are widely used due to its initial cost of low power units is less compared to AC and can be easily installed.

How do you calculate RLA from LRA?

I was wondering if anyone had the formula for figuring the RLA from the LRA info given on the compressor? A rough rule of thumb is divide that LRA by about 5. RLA doesn’t do much for you except help you size contactors.

How do you calculate LRA?

Locked Rotor Amps Formula To calculate the locked rotor amps, divide the kVA by the horsepower, multiply that result by 1000, then divide the result by the voltage.

What is LRA current?

The very high current or amperage a motor draws when power is first applied, due to low counter emf. It is usually five to six times the running load amperage.

Why motors are rated in kW?

Since the power factor is unknown both generator and transformer are rated in kVA. But in the case of a motor, it has a fixed power factor. That is why the power factor is included in the nameplate data. Hence, Electric Motors are rated in kW and not in kVA.

How is nameplate capacity calculated?

The formulas we use is: Nameplate Capacity (kW) = (Percent of Building Load * Annual Building Load (kWh)) / (8760 * Capacity Factor ).

What is nameplate capacity per day?

Nameplate capacity is the theoretical output registered with authorities for classifying the unit. For electric power stations, the power output is expressed in Megawatt electrical (MWe). For fuel plants, it is the refinery capacity in barrels per day.

What are motor codes?

Code. For motors less than ½ horsepower, the code letter on the nameplate represents the locked-rotor kVA. On larger motors, it identifies the locked-rotor kVA per horsepower. Design. Based on torque and current characteristics, NEMA Stds. Insulation Class. Often abbreviated “Ins.

What is Type P motor?

A ‘p’ type motor is a motor specifically designed to support and accommodate the proper form of ‘p’ type protection, so it can safely operate in a given hazardous gas environment.

What is a 3 phase motor?

A three-phase motor is an electric machine that transforms electric power into mechanical energy by means of electromagnetic interactions.

What is rating in motor?

motor rating means the maximum continuous kW output of a motor as stated on the manufacturer’s rating plate mounted on the motor; Sample 1. motor rating . ‘ means the maximum continuous kW output of a motor as stated on the manufacturer’s rating plate; Sample 1.

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