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Q.

What is a GROUNDING TRANSFORMER ?

Tags: electronics, transformer, advertising & marketing
Asked by truth exposed, 02 Apr '13 05:24 pm
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Answers (8)

 
1.

If the earthing transformer on the Delta Side is outsides the Zone of protection the Earth Fault(E/F)in the delta system outside Current Transformer(CT) locations would produce current distributions as shown which circulate within the differential CT secondaries and is kept out of operating coils.

Zig-Zag or inter connected star grounding transformer has normal magnetising impedance of high value but for E/F, currents flow in windings of the same core in such a manner that the ampere turn cancel and hence offer lower impedance.

In cases where the neutral point of three phase system is not accessible like the system connected to the delta connected side of a electrical power transformer, an artificial neutral point may be created with help of a zigzag connected earthing transformer.

This is a core type transformer with three limbs. Every phase winding in zigzag connection is divided into two equal halves. One half of which is wound on one limb and other half is wound on anothe ...more
Answered by Ataur Rahman, 02 Apr '13 05:26 pm

 
  
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2.

Used for earthing
Answered by afsa kausar, 02 Apr '13 05:26 pm

 
  
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3.

For any electrostatic charges developed due to frictions, they need to be earthed in order to avoid heavy shocks. electrostatic voltages are very high. so generally, the grounding transformer is a step down transformer with very high no. of primary turns and low no. of secondary turns. the trapped electrostatic charge in the primary is converted in to very low voltage at primary and since earth is having very good current sinking capacity (infinite in actual), the heavy current induced in the secondary is immediately returned to earth thus preventing shocks.
Answered by Manoj M, 02 Apr '13 05:31 pm

 
  
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4.

A kind of transformer,, electrical in nature i guess
Answered by conviction, 02 Apr '13 05:26 pm

 
  
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5.

For any electrostatic charges developed due to frictions, they need to be earthed in order to avoid heavy shocks. electrostatic voltages are very high. so generally, the grounding transformer is a step down transformer with very high no. of primary turns and low no. of secondary turns. the trapped electrostatic charge in the primary is converted in to very low voltage at primary and since earth is having very good current sinking capacity (infinite in actual), the heavy current induced in the secondary is immediately returned to earth thus preventing shocks.
Answered by manoharkhanna, 08 Apr '13 12:28 pm

 
  
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6.

Transformer used to detect ground faults.
Answered by Vilas Deshpande, 04 Apr '13 06:55 am

 
  
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7.

For any electrostatic charges developed due to frictions, they need to be earthed in order to avoid heavy shocks. electrostatic voltages are very high. so generally, the grounding transformer is a step down transformer with very high no. of primary turns and low no. of secondary turns. the trapped electrostatic charge in the primary is converted in to very low voltage at primary and since earth is having very good current sinking capacity (infinite in actual), the heavy current induced in the secondary is immediately returned to earth thus preventing shocks.
Answered by rajan, 03 Apr '13 07:46 am

 
  
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8.

The grounding transformer is a step down transformer with very high no. of primary turns and low no. of secondary turns.
Answered by Quest, 02 Apr '13 08:40 pm

 
  
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