What are the types of overcurrent relays ? Draw the operating characteristics for all types
Q: Table I and Equation (1) show IDMT characteristics of three Relays R1, R2 and R3. t(1),rip tme =TD( MP -1+ B For M > 1 Table I Characteristics R1 R2 R3 Moderately Inverse 0.0515 0.1140 0.02 19.61 0.4912 Extremely Inverse28.2 0.1217 2 Very Inverse Answer the following questions: (a) Determine the operating time of each relay assuming a 6A pickup setting and a time dial set- ting of 0.6, when the fault current of 60A is measured at each...
draw a schematics diagram using relays
DO Valve (on-off) Pump (a) Process Tank
In a box someone has accidently mixed 5V, 10V and 15V relays. The box contains 100 relays: 56 are 5V, 29 are 10V, and 15 are 15V. Three relays will be drawn out one at a time checked and then put back. Match the probabilities. P(all three draws are 5V) P(all three draws are 10V) P(at least one draw is 5V) Plat least one draw is 10V)
What are the different types of rolling contact bearings, describe the uses of all types of bearings and their distinct characteristics?
Electrical power: Please do a Short answers for all of these questions.... thanks : 1. What is a ‘polarizing quantity’ with respect to directional overcurrent relays? How does the ground grid interact with this protective device? 2. Describe why it would be a bad idea to run away from a substation fault. 3. Explain why NERC considers a single DC ground in a substation to be a serious condition worth tracking at the regional level.
1. List the four (4) basic qualities of modern protection relays. 2. In what applications would the following types of cable be used? XLPE PILC PVC Elastomeric
Draw a electrical/pneumatic diagram.(Switches and relays) one cylinder that extends then retracts and repeats and repeats as long as the system is started.
Q10. During the backup step of two relays, we shobld perform the following Calculate the operating of the backup at fault 112 relay R2 and plot its graph Calculate the operating time using CTI of backup relay R2 and calculate its TMS Calculate the TMS of backup relay Calculate the operating time using CTI of backup relay R2 and plot its graph
Please describe what are the basic characteristics and types of bonds, stock and derivatives
Questions from protective Relaying course
Need help ... Thank you
в 12 Figure 3.2 d) In Figure 3.2, if all the impedance relays of distance protection 4) and distance protection 2 have circular characteristics, draw the tripping zones of zone I II II for protection 1 and zone I for protection 2.
в 12 Figure 3.2
d) In Figure 3.2, if all the impedance relays of distance protection 4) and distance protection 2 have circular characteristics, draw the tripping zones...