Answer / thowsif_emerson

Transient Fault Records in Substation we are using a DDFR
(Distributed Digital Fault Recording) System:-

Transient Fault Records (also known as Oscillography
records) that are recorded in protection relays will be
retrieve by the DDFR and stored in its internal memory
space. All Transient Fault Records will be archived using a
naming convention that will make it easy for users to
relate the Transient Fault records with a particular
substation fault. Each record will be stored with a name
that includes the exact date and time that the record was
initially triggered. If the Transient Fault record was
originally recorded in the relay as a COMTRADE file, the
DDFR will store this record in its native format; if the
protection relay stores it’s record in another format, such
as a CSV file, the DDFR will automatically convert this
file into the COMTRADE-1999 format so that the record can
be analyzed using a standard COMTRADE viewer.

Answer / sanjy

only for information

which motor is suitable for traction? why?

15 Answers   BCH, KPCL,

---

what is rated current and operating current?

1 Answers  

---

All we know about T/R, Is it possible to make T/R primery singlr phase and secondery three phase,If it then how?... Need Description

1 Answers  

---

There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

4 Answers  

---

Where all & Why resistance grounding is required?

1 Answers  

---

---

what is the type of motor that is used in emu units in india

1 Answers  

---

Full form of bdv test?

2 Answers   Hi Tech Transpower,

---

How can we explain that what is the power factor?

5 Answers  

---

i want to measure voltage difference between neutral and earth so i just simply use voltmeter. my question is that may i use this measure continuosly.or there are some electricity board restrication on that? or it creat some problem on my measuring device..?

2 Answers   NEEC,

---

at present how many 765 kv lines are there in india?

5 Answers   Emco,

---

I have a generator of 300kw.400V,50hz . what is means can i assume the load Red Phase with Neutral 300kw.Yellow phase with neutral 300kw and Blue with neutral also 300Kw. or - red with neutral 100kw same as yelloe and blue phase also giving 100kw with neutral respectively

3 Answers  

---

differentional compound gernater used for wielding porpose. why????????//

2 Answers  

---