ACB Circuits with Protection Relays
ACB Circuits with Protection Relays
Published 6/2025
Duration: 1h 24m | .MP4 1280x720 30 fps(r) | AAC, 44100 Hz, 2ch | 619.61 MB
Genre: eLearning | Language: English
Published 6/2025
Duration: 1h 24m | .MP4 1280x720 30 fps(r) | AAC, 44100 Hz, 2ch | 619.61 MB
Genre: eLearning | Language: English
Design & Implementation of ACB Circuit Protection, Understanding relays their Applications
What you'll learn
- Role of Protection Relays in ACB
- Relay Inputs & Outputs
- Trip Circuit Supervision
- Discussed electromechanical relays (like CDG31, CAG14, VAGM22) and numerical relays (like Siemens 7SJ610, 7UG), including their functions and wiring.
- Earth Fault Protections
- Explained under-voltage and over-voltage protections
Requirements
- Should have a basic degree or knowledge in Electrical Engineering - B tech, B.E., Diploma or any similar relevant educational background
Description
ACB Circuits with Protection Relaysis an advance course to learn Design & Implementation of ACB Circuit Protection, Understanding relays their applications.
1. Protection relays monitor electrical parameters using CTs and VTs to detect faults and control Air Circuit Breakers (ACBs) by allowing safe closing or tripping during faults. Relay outputs are used for tripping, indication, feedback, and interlocking, ensuring safe, coordinated, and reliable operation of the electrical system.
2.Protection Relays: Electromechanical and numerical relays for overcurrent, earth fault, and more.
- Relay Wiring: CTs, PTs, and specialized relays (CAG14) with stabilizing resistors.
- Trip Management: Master trip relay and trip circuit supervision relays ensure safe and reliable breaker operation.
3. This Section describes various protection relays and schemes used in electrical systems, including:
a. Overcurrent and earth fault protection usingCDG31and Siemens7SJ610relays.
b.Restricted Earth Fault (REF)protection usingCAG14relay.
c.Standby Earth Fault (SBEF)protection using numerical relay 7SJ6612.
d. Voltage-based protection (under/over voltage) usingVAGM22andP3U30relays.
e. Under-voltage protection with time delay usingVTT11 timer.
f.Master trip relayandtrip circuit supervision(TCS) for reliable breaker operation.
4. Overall, these Section provide a comprehensive overview of designing and implementing a complex ACB incomer circuit with multiple protections.
5. This lecture series covers the design and development of a 4-pole ACB incomer circuit with various protections, including overcurrent, earth fault, undervoltage, and trip circuit supervision. The circuit incorporates numerical and electromechanical relays, CTs, PTs, and metering systems to ensure safe and reliable operation.
Who this course is for:
- Final year engineering - B tech, B.E., Diploma
- Electrical Engineers who want to work in electrical domain
- For those electrical engineers who want to know more about ACB its working & its operation.
More Info