Switchgaer & Protection Lab Manuals
Experiment No.: 8 Experiment Name: Study of Vacuum Circuit Breaker (VCB) and identify different parts. Objective: To study VCB To identify different parts of VCB Theory: A vacuum circuit breaker is such kind of circuit breaker where the arc quenching takes place in vacuum. The technology is suitable for mainly medium voltage application. For higher
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Experiment No.: 7 Experiment Name: Study of different lightning arrester and identify different parts. Objective: To study of different lightning arrester To identify different parts of it Theory: A lightning arrester is a device used on electric power transmission and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal.
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Experiment No: 6 Experiment Name: Identify various components of different switchgears: A. Circuit Breaker [: i) LT air circuit breaker; ii) Minimum Oil Circuit Breaker; iii) Air Blast Circuit Breaker; iv) SF6 Circuit Breaker; v) Vacuum Circuit Breaker] B. Isolator [vertical break, horizontal break] C. CTs and PTs D. Power and distribution Transformers and write
Experiment No.: 5 Experiment Name: Testing of Induction Type Over Current Relay using Relay Testing Kit to Plot the Inverse Characteristics. Theory: A non-directional heavily damped induction disc relay which has an adjustable inverse time/current characteristic with a definite minimum time. The relay has a high torque movement combined with low burden and low overshoot.
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Experiment No: 4 Experiment Name: Testing of Percentage Differential Protection of Transformer using Electromagnetic Type Transformer Differential Relay. Objective: Theory: Principle of Differential Protection scheme is one simple conceptual technique. The differential relay actually compares between primary current and secondary current of power transformer, if any unbalance found in between primary and secondary currents the
Experiment No.: 3 Experiment Name: Demonstration of the operation of single phasing preventer by creating single phasing fault for a given 3-ph induction motor with D.O.L. starter. Objective: To demonstrate the operation of single phasing preventer by creating single phasing fault for a given 3-ph induction motor with D.O.L. starter. Theory: A 3 phase motor
Experiment No.: 2 Experiment Name: Testing of static Overcurrent protection relay using Relay Testing Kit. Objective: To test static overcurrent protection relay using Relay Testing Kit. Theory: The overcurrent relays, even though simplest of all types of electromechanical relays, are the most difficult static relays. This is because the induction disc characteristics of the overcurrent
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Experiment No.: 1 Experiment Name: Dismantle MCCB/ELCB/ RCCB and Identification of Various Parts Objectives: To dismantle MCCB, ELCB, RCCB To identify different parts Theory: 1. MCCB: Molded Case Circuit Breaker or MCCB is an automatic electrical device. It is a type of circuit breaker that protects the circuit from overloading, short circuit and current surges. It
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