Solid Grounding is Adopted for Voltages Below (A) 100 V (B) 200 V (C) 400 V (D) 600 V

What is Solid Grounding?

When the power transformer, generator, or grounding transformer neutral is linked directly to the ground using a conductor of minimal reactance and resistance, a power system is said to be successfully grounded or securely grounded.

Reactance grounding:

In order to reduce the fault current, this approach inserts a reactance between the neutral and the ground. An increase in transient voltages for this method shows up when there is a fault.

Voltage Transformer Earthing:

The main of a single-phase voltage transformer is linked between the neutral and the earth in this method of neutral earthing.

Pulse transformer

• For neutral grounding, no pulse transformer is used.
• A pulse transformer is a transformer that has been improved to produce electrical pulses with high velocity and stable amplitude.
• For the most part, gate terminal firing circuits in power electronic devices like SCR use pulse transformers, which are essentially 1:1 transformers.
• It is utilized to separate the high-power circuit for SCR use from the low-power gate firing circuit.

Summary

Solid Grounding is Adopted for Voltages Below (A) 100 V (B) 200 V (C) 400 V (D) 600 V

For voltage below 600, solid grounding is adopted. The main reason behind the use of Solid Grounding is higher point-of-fault energy levels.