• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

How Engineering Works

  • Home
  • About Us
  • Electrical Engineering
    • Interview Questions
  • Privacy Policy
  • Disclaimer
  • Contact Us
  • Blog

Why do we use grounding transformer?

November 20, 2017 by DK

DWQA Questions › Category: Transformer › Why do we use grounding transformer?
0 Vote Up Vote Down
DK asked 5 years ago
3 Answers
0 Vote Up Vote Down
Gurmit answered 5 years ago

Grounding transformers are sometimes used on distribution systems. A grounding transformer provides a source for zero-sequence current. Grounding transformers are sometimes used to convert a three-wire, under grounded circuit into a four-wire, grounded circuit.

0 Vote Up Vote Down
Bheem answered 5 years ago

 The grounding transformer is used to provide a path to an ungrounded system or when the system neutral is not available for some reason, for example, when a system is delta connected. It provides a low impedance path to the neutral and also limits the transient overvoltage when the ground faults occur in the system. The grounding of the system can be done in the following way

  • By using a delta-star grounding transformer.
  • By using a zig-zag grounding transformer

 

0 Vote Up Vote Down
Dhimel answered 5 years ago

Ground transformer is used to provide aground path to either an ungrounded wye or a delta-connected system. They are typically used to:

  1. Provide a relatively low-impedance path to ground, thereby maintaining the system neutral at or near ground potential.
  2. Limit the magnitude of transient overvoltages when restriking ground faults occur.Provide a source of ground fault current during line-to-ground faults.
  3. Permit the connection of phase-to-neutral loads when desired.

Primary Sidebar

Related Questions

  • In a Tap changing transformer, tap is connected in the primary side or secondary side? asked by admin
  • What is Tap Changer? asked by
  • What is the condition to obtain maximum efficiency in a single-phase transformer? asked by
  • What is a transformer bushing? asked by

INTERVIEW QUESTIONS

MCQ or Objective





Recommended Post

MCQ on Measuring Instruments – 2

Electrical Engineering Interview Questions

DC motor, how does it work?

MCQs on Induction Motor

Civil Engineering MCQ

Categories

  • Electrical Articles (19)
  • Electrical MCQ (75)
  • Electrical Questions (11)
  • Interviews Questions (7)
  • IQ Test (1)
  • Uncategorized (12)

Join Our Whatsapp Group


About Us | Privacy Policy | Disclaimer


Copyright@2017-2022