Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / rich sawe
CTPT - The Current Transformer and Potential Transformer,
these are instrument transformers used mainly for high voltage instrumentation purposes at the substation
1.Measurement purposes;these transformers provides low level signals to the metering equipments to measure line voltage level and line currents at the substation.
2.Protection purpose;these transformers provides signals to the upon occurrence of fault , over-current and under-current faults are firstly sensed by the current transformers then signals the O-C/U-C RELAY to trip the Circuit breaker ,Over-voltage and under-voltage faults is firstly sensed by Potential Transformer then signals the O-V/U-V RELAY to trip the Circuit breaker.
3. The occurrence of unbalanced fault condition in three phases at the substation is detected by the current transformers and potential transformers and the signal is fed to the respective relay to operate the circuit breaker.
4.on the POWER GRID the performance and operating status of the HIGH VOLTAGE SUBSTATION are monitored and controlled through feedback from CTPT
...DIT TANZANIA...
| Is This Answer Correct ? | 7 Yes | 2 No |
Post New Answer View All Answers
How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?
i have applied for the post of RRB section engineering chennai board please send me previou papers and solved answer. my mail id jagarapusrinivas@gmail.com
how does high earth to neutral voltage affects electronic circuit?
Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.
what is the relative size of single and three phase?
what are the possible reaons & remedies if resistance of NGR getting heat up
1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.
Explain the operation of variable frequency transformer?
define the active power?
Why single phase induction motors are not self starting ?
What is the bundle conductor?
What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?
How stabilizer works??
how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???
WHY BREAKER ARE USED IN SUBSTATIONS?
