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The purpose of the bus bar protection unit is to isolate any bus by tripping its contactor or isolate a faulty bus in the variable ac system?
Selvame
The Bus Bar is (usually 3, or 4) solid copper bars that run through an MCC (Motor Control Center) and just supply power to the individual 'buckets' (compartments that contain the individual motor starters).
The only protection for a bus bar would be from the 'Panelboard', or 'Switchboard' breaker that feeds the bus bar mounted in a separate MCC.
Make Sense???, let me know if not...
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∙ 16y ago
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What does isolating a variable mean?
In math, isolating a variable is removing all constants from the side of the equal sign that the variable is on. ex. 3x=9 divide by 3 to isolate the variable x=3
How does a transformer protect an appliance?
Normally current transformers are used for two things . For measuring and protection. Whenever the CT is a protection CT it will be connected with the protection relays and there will be setting in the relays based on our requirement. when the current pass through the relays are more than the setting range then relay will send the tripping signal to the breaker available in the system to isolate the fault section. Finally the CT is not protecting the system. it will transfer the high primary current from the system to relay as small secondary current.
How can you wire a 6-pole isolator to disconnect a 6-wire star delta motor away from the mcc and near to the motor?
There is no need to place a 6 pole disconnect to isolate the motor in the field. The motor's leads at the motor's terminal box have to be wired for a delta connection. The star delta contactor in the MCC only has three wires on its output. Six wires do not have to be taken directly to the motor. The voltage is reduced at the start of the circuit when the starter in in the star configuration. From the star configuration it changes to the delta configuration. So as you can see only a three pole isolation switch is needed in the field to isolate the motor from its supply.
How do you isolate the gene in genetic engineering?
You isolate the gene in genetic engineering by first locating the gene you wish to be isolated. Then you use a restrictive enzyme to isolate it, and lastly take the gene out
Explain why a class might provide a set method and a get method for an instance variable?
A class might provide a set method (setter) and a get method (getter) for an instance variable in order to encapsulate the internal implementation of the class, and to isolate that implementation from the public interface of the class. Even if the setter and getter does no more than directly set and get the instance variable, the public interface should use that paradigm in order to allow for possible future alteration of the implementation, while minimizing the impact of doing so. Proper OOD/P (Object Oriented Design/Programming) should always make the implementation be private, even for derived classes. This reduces error, and reduces "lazy" coding techniques.
How do you isolate the variable for a fraction?
You multiply by the recipicole of everything besides the variable u want to isolate( pv/t and u want to isolate v then multiply by t/p
What do you always do to the variable?
Always isolate the varible
What is an equation with one or two variables?
When you solve a one-variable equation, your goal is to isolate the variable.To isolate the variable means to make it be alone on one side of the equals sign.In the equation shown here, you can isolate the variable by subtracting 9 from both sides of the equation and simplifying
How do you determine constant or variable?
By using algebra. You have to isolate the variable and use the constants to find the varaible.
What is to isolate a variable on one side of an equation?
segregation or apartheid
How do you solve for the variables?
Yes, that is what you are normally required to solve for.
How do you solve for the value of a variable?
you isolate the variable to the left side of the equation and keep all other terms and factors to the right side, as in solving for x in 2- x = 2. You have to use basic algebraic manipulation to isolate the chosen variable, i.e., adding multiplying or dividing by an equal amount to each side of the statement in order to isolate x.
To use inverse operations on both sides of an equation until the variable appears by itself on one side?
Isolate the variable
For systems in which there is no linear equation you can isolate and substitute a variable that is what in both equations?
squared
Which operations would isolate the variable in this equation 3y - 12 14?
Division
What is the definition of isolate the variable?
In algebra, its to move the pieces of the equation around so that the variable is isolated to only one side of the sign
What does isolating a variable mean?
In math, isolating a variable is removing all constants from the side of the equal sign that the variable is on. ex. 3x=9 divide by 3 to isolate the variable x=3
