Answer / k.prakashchandra

To name a few. 1.No need to replace oil 2.O & C Mechanism is
very simple 3.Carriage is lighter

Answer / swetha

MOCB contains oil which expands and contracts during working which may create vacuum/gases inside the circuit breaker which may lead to an explosion sometimes if proper care is not taken.They also require a cooling system. Moreover, these circuit breakers require proper maintenance like changing the oil, taking proper predictive maintenance etc. But in the case of VCB's they don't require any maintenance, exhibit high arc quenching property, offer good amount of cooling. Hence, VCB's are mostly preferred.

how many testing use in power transformer?tell equipment names?

2 Answers   ABB, Electrical,

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is earthing is necessary if we use armoured cable

1 Answers   ABB, Schwing Stetter, Siemens,

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with the help of drive can we run the 50hz motor on 100hz,what will be its effect.

3 Answers   BPL,

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers  

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What is the difference Marshaling box and RTCC (Relay tap changer circuit) Panel of transformer ?

1 Answers  

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can we use generator(a.c) as a motor.if so how if not why.

2 Answers  

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A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?

0 Answers  

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what is the dedicated neutral earth in ups? y its required?

4 Answers  

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As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?

0 Answers  

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in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.

0 Answers  

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What will be electrical cost per sqft for IT building (basebuild and fitout)and for residential township?

0 Answers  

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Which level of the Transformer oil got dielectric strengh? And why?

0 Answers   HSL,

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