Aug 03, 2016· Need some help here, as things get a little blurry with the phase angles and everything. But here's my question: I have a 208V/30A 2 pole breaker, feeding 10A to each phase. i need to calculate power. I have 3 methods and need to know which one is correct. 1.) 208V x

Breaking Oversize Material: When breaking oversize material, the breaker is expected to break the material down the middle into two pieces. This is optimum production. If the operator has to re-position the breaker towards the edge of the rock and gradually

To assess what size of breaker will effectively handle this application, the size and hardness of the material must be known. If a 4 cu. yard piece of hard rock (20,000 psi or greater) needs to be broken in half you will require a 7,500ft. lb. or larger breaker. If a 2 cu .yd.

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Material Calculator. Step 2: Enter the length, width and depth of area to fill (NOTE: depth is in inches, not feet) Step 3: Click Calculate to get amount needed.

Source: Lewis, Cobourn and Bhappu For an underground hard rock mine, a gyratory crusher may be more economical in the case where it's required daily production exceeds 8,000 tonnes of ore. Source: Jack de la Vergne If the hourly tonnage to be crushed divided by the square of the required gape in inches is less than 0.115, use a jaw crusher; otherwise use a gyratory.

How to calculate productivity of construction equipment like excavator, dozer, rock breaker, riper.. d)swing factor=1.07 for 75degree and 0.71 in case of 180 degree. e)performance efficiency=0.83 if 50 minutes work is done in one hour.

pattern. The rock will move forward normally to the rows of holes. If the holes are fired in oblique rows as in Figure 8-5, the rock mass would be thrown to the right during blasting. (Figure 8-4) Typical bench cut with two free faces and fired with one delay per row. (Figure 8-5) Direction of throw of blasted rock.

Dear friends, Can somebody help to me calculate the production rate per hour and unit rate estimate of excavation in rock (Dolomite) which is to be carried out without explosives. It would be undertaken with Excavator 50T + Hydraulic Jack Hammer 3.2T and Hydraulic and Rotary Drum Cutter for excavator 50T . Thank you and BR, Khan.

How can we calculate the per hour productivity of a hydraulic rock breaker,for excavator..

High Productivity Impact Breaker Stone Crusher Machine Price,, productivity calculation of aggregate crushersjaw and impact This page is about how to calculate . productivity calculation of aggregate crushers,jaw and impact calculating the cost of aggregate from stone crusher rock calculating the cost of aggregate from stone crusher

Rate analysis of excavation in earthwork is the measure of quantity of excavation to be carried out, the cost of equipment, machineries and labors required for the same. The cost of excavation depends on the depth of excavation, type of soil, method of excavation to be carried out and the distance where the excavated soil has to be disposed.

Breaking Oversize Material: When breaking oversize material, the breaker is expected to break the material down the middle into two pieces. This is optimum production. If the operator has to re-position the breaker towards the edge of the rock and gradually

The paper deals with the productivity analysis of different shovel-truck combination conducted for two open pit coal mines and then will compare their productivities. Discover the world's research

Nov 02, 2015· 1. Match the breaker to the project. Simply attaching a larger breaker to your excavator will not guarantee better results on a jobsite. When it comes to oversized boulders, there is a direct correlation between the size of the breaker and the composition and size of the rock. When trying to break rocks, it is best to match the breaker to the work.

To calculate the rate of production of something you need to have the power of your reactor (in watts). when you have the power you will be able to get energy that your reactor produces in a

Most secondary crushers are cone crushers or horizontal-shaft impact crushers, Production availability is on par with stationary plants. Inquiry; how to calculate productivity of rock breaker-SBE. calculation of productivity of crusher Formula for Measuring Productivity by Sue-Lynn Carty, studioD, How to Estimate Man-Hour Productivity in

Medium sized breakers 1,500-4,000 ft·lb class (2000-5400 joule) are used in both concrete and rock applications with limitations on the size and amount of material to be broken. Large Breakers Larger breakers greater than the 4,000 ft·lb class (5400 joule) are typically used in hard rock, high production applications. Breaking Oversize

Circuit breakers breaking capacity is the rated RMS value of current that a CB can break at the rated voltage. List of Contents1 Calculator2 Formula3 Calculations Solved Examples4 Frequently asked questions Calculator Formula Breaking capacity (B.C) = 1.732 * V * I * 10-6 Where 1.732 = 3 represents a multiplier for three phase circuits []

Employee Engagement for the Workplace. Productivity Formula . How to calculate productivity. The 80-20 productivity formula If you communicate regularly to a broad base of staff within your corporate structure, then you are most likely focusing on the best ways to impart ways of increasing productivity to your managers and key employees.

Here's a Calculator to Help You. Use the formula from Step 1 to calculate excavator productivity. For instance, if the capacity of each rotor bucket is 10 cubic feet, the wheel has only one bucket, the rotor rotates at a speed of 5 rotations per minute, and the filling factor and the soil loosening factor are one,

Sep 23, 2011· To calculate the efficiency of a line for a day, you will need following data (information) from the line supervisor or line recorder. 1. Number of operators how many operators worked in the line in a day. 2. Working hours (Regular and overtime hours) how many hours each of the operators worked or how many hours the line run in a day.

Our Stone calculator will help you estimate how many Cubic Yards of Stone you need for your desired coverage area. The crushed stone calculator offers 4 "Box" area fields and 2 "Circular" area fields for you to calculate multiple areas simultaneously (back yard, front yard, driveway, garden, etc.).

Compact range breakers. Sandvik compact range breakers are versatile, easy to use and give you the power and flexibility to deal with a wide range of applications. The compact range breakers include engineering features such as a membrane-type accumulator and non-greased tool bushing, which makes these breakers virtually maintenance free just

3-0 Productivity: 3-1 Labour productivity is a measure of the overall effectiveness of an operating system in utilising labour, equipment, and capital to convert labour efforts into usuful output. In other words, it is a measure of the team work.