calculation of motor power for feeder

Motor Calculations Part 2 Feeders EC M

Remember motor feeder conductors must be protected against the overcurrent that results from short circuits and ground faults but not those that result from motor overload When sizing the feeder protection be sure to include only the motors that are on the same phase Refer to Fig 5 for this sample motor feeder protection calculation...

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Calculation of Drag chain RPM Motor power

Feb 02 2014 0183 32 Drag chain could refer to a reclaimer scraper chain conveyor apron feeder etc Each has its own particular drag force Selected chain speed determines rpm and motor power is chain speed x drag but usually factored according to the drive duty...

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Electrical Motor Calculation

The Construction Monkey Motor calculator lets you figure out electrical characteristics of your system given a specific motor By inputting horsepower motor efficiency power factor and system voltage the system will calculate the disconnect size feeder size and starter size...

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Motor current calculator jCalcNET

For a 1-phase supply with power rating in kilowatt kW For a 1-phase supply with power rating in horsepower hp Note that the motor rated full load current is specified on the motor datasheet and stamped on the motor nameplate However this calculator is useful when only the motor rating is available and an estimate of the current is required...

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3 Phase Motor Current Calculation Formula Explained

Feb 03 2018 0183 32 3 Phase Motor Current Calculation Formula Explained In the below image I have shown a 3 phase motor nameplate In the motor nameplate the company provides the motor is 15 KW 3 phase induction motor The Eff of the motor is 089 and PF is 085 The volts of the motor...

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Load Calculations for Feeder and Service Neutral

As per NEC section 22061 B 2 Where the calculated neutral current is more than 200 amperes another reduction is permitted Where the feeder or service is supplied from a three-wire DC or single-phase AC system a four-wire three-phase three-wire two-phase system or a five-wire two-phase system it is permissible to apply a demand factor of 70 percent to that portion of the unbalanced...

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Electrical Wire Cable Size Calculator Copper Aluminum

Today we are here with another comprehensive Copper and aluminum wire size calculator As we have discussed in detail the topic of How to calculate the proper wire size for Electrical Wiring Now you can take the advantage of this calculator to do this job J You can also check the classical Wire Cable Size Calculator in AWG Calculating Wire/Cable Size formula for single Phase Circuits...

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Vibrating feeder

Feb 11 2015 0183 32 4 MOTOR SELECTION OF A VIBRATING FEEDER Power required for driving a vibrating feeder P= VW x a x N x 125 / 97400 x LRT Where VW= Vibrating weight in kg a= Amplitude of vibration in mm LRT= Locked rotor torque ratio N= RPM of the feeder P is in kW 17 4...

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ron feeder power calculation

Motor Calculations Refer to pg 49 see oneline diagram Motor calculation steps The following steps adhere to article 430 of the NEC The steps cover motor full load currents branch circuit sizing branch circuit overload protection feeder sizing and feeder over current protection sizing for single and threephase Alternating Current Motors of...

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Motor Power Calculation for Vibrator

Dec 08 2014 0183 32 How to calculate the required motor power for an unbalanced vibrator which is used for vibrating a grizzly feeder what is the formula Regards Sumith Added by Moderator VIBFEM Grizzly Feeder Weight of feeder including vibrator = 3000 kg approx max feed size of material = 600 mm...

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Feeder and Service Load Calculations « Knowledge Base

5556 Load Calculations for Service and Feeder Conductors Set the Load Calculation Method to Marina or Marina with Sub-Meters to use this code section Set the number of receptacles using the Shore Power Receptacles field When circuiting use the Marina / Mobile Home / RV load type for the load on the shore power receptacl...

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Motor Sizing Calculations

Motor Sizing Calculations This section describes certain items that must be calculated to find the optimum motor for a particular application power Motor selection should be based on the operating time operating pattern Each gearhead has maximum permissible load inertia...

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Tools and Calculators ABB US

Motor Voltage Drop Calculator Calculator that provides voltage drop caused by the starting of motors at the substation transformer primary and secondary leads the Power Module Wizard can evaluate different on-board powering architectures and provide a comparison of different approach By providing the relative efficiency cost and board...

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Motor loads calculation

Electrical motor loads are calculated from power in kW and full rated load in kWFollowing is the formula how to calculate Motor loads Example We have 1 unit Induction Motor with 30 horsepower hp running with 349 amps for amperage load and 460 volts 3 phase and power factor value is 075 and motor efficiency is 85...

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Code Calculations EC M

Multiple motor loads Secs 430-6 a and 430-24 Suppose you have several motor loads on the same circuit The Code requires you to size the conductors at least equal to the sum of all the loads plus 25 of the highest-rated motor in the group Example Calculate the load for the following First load = motor of 40A Second load = motor of 52A...

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Electrical Feeder Calculation

Construction Monkey calculator that determines an electrical feeder based on load size as well as other variabl It also calculates the voltage drop and maximum distances of the feeders...

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Power calculation for hoist motor

An enquiring mind might think - what if the power is sufficient to lift the load say the operators try to lift a heavier load or the load is a bit stuck on the initial lift stage or wht really happens durng the intial accelration stage as the load moves from a standstill to it s design speedthe fact that a hoist motor is selected with a...

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Voltage drop calculation methods with examples explained

Sep 15 2020 0183 32 A 460 V 100 hp motor running at 80 PF draws 124 A full-load current It is fed by three 2/0 copper conductors in steel conduit The feeder length is 150 ft 46 m...

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Motor Calculations Refer to pg 49 see one

Motor calculation steps The following steps adhere to article 430 of the NEC The steps cover motor full load currents branch circuit sizing branch circuit overload protection feeder sizing and feeder over current protection sizing for single- and three-phase Alternating Current Motors of...

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Parallel feed calculation Mike Holt s Forum

Nov 10 2009 0183 32 Is there a formula to figure out parallel feeder sizes or for example if you have a 600A main do you cut it into 300 and 300 and run wire big enough for this amperage Am a journeyman and I ve seen it on drawings but I really don t know how to calculate the size of parallel Please advice thanks...

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How to Size Motors for Load Horsepower Motor Horsepower

Feb 09 2021 0183 32 EFF is motor efficiency per motor nameplate Power factor is the ratio of true power kW to apparent power kVA In the absence of power factor measurement tools a rule of thumb is to estimate power factor at 085 173 is a constant used when calculating three-phase power 746 is the constant for converting watts to horsepower 746 watts...

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Online Wire Size Calculators Tables

The motor wire size should be designed to handle this in rush current as well as handle a continuous full-load current of the motor There are also motor winding protection and thermal considerations to design for when designing motor feeder and branch circuits...

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Power Factor

The power factor of an AC electric power system is defined as the ratio active true or real power to apparent power where Active Real or True Power is measured in watts W and is the power drawn by the electrical resistance of a system doing useful work Apparent Power is measured in volt-amperes VA and is the voltage on an AC system multiplied by all the current that flows in it...

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Calculating Conveyor Power for Bulk Handling Rulmeca Corp

Calculate Belt Conveyor Power Requirements Calculate Belt Tension Requirements Plot Material Trajectory Plot Material Cross Section The program not only determines required power but also displays all Motorized Pulleys available for 60 Hz power...

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DRIVING POWER VERIFICATION OF THE APRON FEEDER FOR

DRIVING POWER VERIFICATION OF THE APRON FEEDER FOR ORE TRANSPORTATION Abstract This paper gives the methodology for driving power calculation of an apron feeder for ore transpor-tation on the example of the apron feeder DO-F in the open pit of the Copper Mine Majdanpek The analysis was done by calculation for given operating parameters...

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Motor feeder cable calculation GoHz

May 26 2015 0183 32 Motor feeder cable calculation Motor feeder cable calculation Tuesday May 26 2015 If you want to guess at what the FLA of a motor is then use efficiency and power factor In the end you need to use the nameplate amperage only for the overloads you actually install...

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Appendix 9C Design Calculations for Electrical Design

requirements the motor efficiency and power factor must be accounted for In general for preliminary or rough load calculations assume 1 kVA of electrical input power for 1 hp of motor Example 9C-1 Motors Condition A motor control center with a total connected horsepower of 337 hp can be assumed to require 337 kVA of input power...

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