what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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What is best method of Calculating Short Circuit current in power system network.

1 Answers  

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why the supply frequency in india is 50hz?

2 Answers  

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high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

0 Answers  

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I have installed capacitor bank at secondary transformer. cos phi is increase. but on load (far from transormer), it still poor. Can anybody explain it??

6 Answers  

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why we are using in reverse power relay in generator singranizing

1 Answers   Dalkia,

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is there interlocking between duty and standby chilled water pumps?

1 Answers  

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what are the basic concept to design a out door Substation?

1 Answers  

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how calculate cable size in squre mm, when the load is given by in kw? do u have current rating chart of elctrical cables?

4 Answers  

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What is difference between Sample test and Routine test in safety standard?

0 Answers   Chicony Electronics,

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why induction motors are rated at 0.8 power factor.

0 Answers   Bhel, TN,

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Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

2 Answers  

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