Skip to main content

Merz Price Differential Protection of Alternator. By Yuvi - Study Point

Hey everyone, today we are going to learn about Merz price differential protection of alternator.
So, without wasting any time lets get started.

  • Currents at the two ends of the protected section are compared in this scheme of differential protection of alternators.
  • under the normal operating conditions, these currents are equal. But when a fault occurs in the protected section these currents become unequal.
  • The most common system which is used for the protection of the stator winding faults employs circulating-current principle.
  • Phase to phase fault and phase to earth fault, these are the two types of faults which occur in an alternator stator. 
  • And through the operating coil of the relay, the difference of the currents under fault conditions is arranged to pass.
  • And after this, the relay closes its contact to isolate its protected section. Or we can say to isolate its healthy section from the faulty section.
  • And this form of protection is also known as Merz- price circulating current scheme. 
  • The most severe outcome of fault for an alternator is the damage of stator.

https://youtu.be/rzu8gOqYyhc

{ In this lecture video I have given the simple and brief explanation about Merz price differential protection of alternator.
Please go and check out this lecture video and my channel. }

Comments

Post a Comment

Popular posts from this blog

NBFM & WBFM (Narrow band frequency modulation & Wide band frequency modulation) simple explanation. By Yuvi - Study Point

Hey everyone, today we are going to learn about NBFM & WBFM (Narrowband frequency modulation & Wideband frequency modulation) in simple or easy way. So, without wasting any time lets get started. The information about NBFM & WBFM When the spectrum's efficiency is important or it is required then we use NBFM (Narrowband frequency modulation) is used.  But when better signal quality is required or when it is important then we use WBFM (Wideband frequency modulation). The term NBFM is used for those applications where the modulation index is less than or equal to 1. And the term WBFM is used for those applications where the modulation index is greater than or equal to 1. Now, let's see more difference between Narrow band frequency modulation(NBFM) and Wideband frequency modulation(WBFM). The term narrow-band and wide-band refer to the actual radio channel bandwidth. The purpose or advantage of using NBFM (Narrowband frequency modulation) The purpo...
2 comments
Read more

Air Preheater, Superheater & Reheater simple learning. By Yuvi- Study Point

Hey everyone, today we are going to understand Air preheater, Superheater, and reheater in a simple or easy way. So, without wasting any time lets get started. Why air preheater is required? The entire heat of the flue gases cannot be recovered by the help of an economizer. So, air preheater is also required to recover some of the heat through the flue gases. The boilers efficiency is also increased by 1% with the help of air preheater. {NOTE: If you guys don't know about the economizer then go through this link which is shown below. Because in this lecture video I have properly explained the economizer in a simple way.} Economizer video link.    https://youtu.be/scxizKi7kZQ  And check out this blog if you want to simply know about it in writing. https://www.blogger.com/u/1/blogger.g?blogID=8839271828242826805#editor/target=post;postID=1907393019648483083;onPublishedMen The information about air preheaters? Now, back to the point. The ...
Post a Comment
Read more

RVDT (Rotary variable differential transformer or transducer) simple explanation. By Yuvi - Study Point

Hey everyone, today we are going to simply learn about RVDT (Rotary variable differential transformer). So, without wasting any time lets get started. RVDT is a passive transducer which means it requires an external power source. Its designing is same as like LVDT (Linear variable differential transformer o transducer) but the main dissimilarity is that RVDT has a cam-type core or we can say rotary ferromagnetic core which means the shape of the core is different because LVDT consists or employs flexible iron core for displacement.   And by the help of shaft, this core will turn or rotate among the two windings of the transformer. The shape of an RVDT is cam-shaped. Three conditions which occur is RVDT is ~ *when the core or shaft is placed at the null position then the induced e.m.f in secondary windings are similar as well as revers in phase. E0 = E1- E2 = 0 *When the core rotates in a clockwise direction, in this the more section of the core will enter ...
Post a Comment
Read more