Please solve in detail SECONDSUse the relay characteristic CO-6 below. The TDS if the relay has TS = 5.0 A, an operating time of 1.5 s and Ip' = 15.0 A would be equal to:CURVE 418246TYPICAL TIME CURVESTYPE CO-6OVER CURRENT RELAY50-60 HERTZSelect one:O a. 1O b. 3○ c. 2○ d. 0.552TIME DIAL SETTING3 4 5 6 7 8 9 10 12 14 16 18 20MULTIPLES OF TAP VALUE CURRENT

Step 1: Given Data:Tap Setting Current TS=5.0 AFault Current If=15.0 AOperating Time t=1.5 sStep 2:…

Answered: SECONDS Use the relay characteristic…

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter14: Phase Failure Relays

Section: Chapter Questions

Problem 1SQ: What is the purpose of phase failure relays?

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Similar questions

Solve all parts.
If we have a 50G ground relay connected to a flux summation CT of 50:5. If we measure the phase currents to be, la = 2002-14° b = 1982-120° Ic=77z+120° How much current will flow into the 50G relay?
What is the purpose of phase failure relays?
Problem 2 - A 1000 – MVA, 20 – kV, 60 – Hzthree-phase generator is connected through a 1000 – MVA, 20 – kVA/345 – kVYtransformer to a 345 – kVcircuit breaker and a 345 – kVtransmission line. The generator reactances are X = 0.15, Xa = 0.3, Xa = 1.4(pu) and its time constants are Ta = 0.05, Ta = 1.0, TA = 0.1(s). The transformer series reactance is 0.06pu; transformer losses and exciting currents are neglected. A three-phase bolted fault (solid 3-phase phase short circuit) occurs on the line side of the circuit breaker when the generator is operated at rated terminal voltage and at no-load. The breaker interrupts the fault 3 cycles after fault inception (neglect the effect of the transformer on generator time constants.) Determine the following (a) The subtransient current (p.u.) through the breaker (b) The sub-transient current (kA) through the breaker (c) The RMS ac (symmetric) fault current (p.u.) after 3 cycles
Please solve in detail to understand
Ex: Consider a A/Y - Connected, 15-MVA, 33 / 11 -KV transformer with differential protection applied, For the current transformer notes ratios show in figure d.36. Calculate the relay currents on full load. Find the minimum relay Current setting to allow 125 percent overload. 33/11 Kv 300/5A 2000/5A faz m AAAA E C An tp ir m is
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500MVA, 21KV, star connected, 3ph 50Hz synchronous generator is operating at the rated voltage, a 3ph fault occurs at its terminal. Its reactance in p.u. are 1.5 of synchronous, 0.5 of transient, 0.2 of sub transient. The transient time is 500ms and the sub transient time is 35ms. 1. What will the AC component be after 1.5 cycles?
Refer to the circuit in Figure 1110. What is the purpose of control relay CR in this circuit?
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A short shunt compound generator delivers 150A at a terminal voltage is 230V. The shunt field current is 2.5A. The resistances of the armature, series field and diverter are 0.032-ohm, 0.015 ohm and 0.03 ohm, respectively. Calculate the electrical efficiency of the generator at this load.
Consider the following figure for a 4-pole, 3-phase, 24-slots double layer winding. Find the pole pitch and the slot pitch angle. 19, 20 12 19 20 ******** FORDEONEAZA I 200000 R'₁ ¹2 *******

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