switch gear and devices

Switch Gear and Devices is an education application which cover all topic ,with important theory, which is available totally free on play store.

Protective Devices: Philosophy of protection, Nature, Causes and consequences of faults, Zone of

protection, Requirements of a protective scheme, Basic terminology components of protection scheme.

Relay classification, Principle of different types of electromagnetic relay.

Feeder: Protection: Over current and earth fault protection, Distance protection, Pilot wire protection,

Carrier current protection.

Generator Protection: Biased differential protection, restricted earth fault protection, Field suppression,

Negative sequence protection, Earth fault detection in rotor circuit

Power transformer Protection: Biased differential protections, restricted earth fault protection, Buchholz

relay Protection of combined transformer and alternator.

Bus Zone Protection: frame leakage and circulating current scheme-use of Translay relay.

Circuit Breakers: Formation of arc during circuit breaking. Characteristics of electric arc. Theories of arc

Interruption. Recovery and restriking voltage, interruption of capacitive and inductive currents. Current

chopping. Principle of A.C. and D.C. circuit breaking requirements of good circuit breaker circuit breaker

rating.

D.C. Circuit breaker.

H.R.C. Fuse: Construction and characteristics

Static Relays : Development and classification of static relays, Different types of phase and amplitude

capacitors,

Arrangement of Bus bar, Circuit breaker and isolator. Current limiting reactors in power system and their

arrangement calculation of fault MVA for symmetrical short circuits. Circuit breaker capacity

开关装置和设备是一个教育的应用程序，涵盖所有主题，具有重要的理论，这是Play商店提供完全免费的。

保护装置：保护的理念，性质，原因和故障的后果，区

保护，保护方案，保护方案的基本术语部件的要求。

继电器的分类，工作原理不同类型的电磁继电器的。

馈线：保护：过电流和接地故障保护，距离保护，控制线保护，

载电流保护。

发电机保护：偏差动保护，限制接地故障保护，现场压制，

负序保护，在转子电路接地故障检测

电力变压器保护：偏置差动保护，限制接地故障保护，巴克霍尔兹

继电器组合式变压器和发电机的保护。

乘车区保护：漏电框架和环流方案使用兰斯雷继电器。

断路器：断路时电弧的形成。电弧的特点。弧形的理论

中断。回收和再起弧电压，电容和电感的电流的中断。当前

斩。好断路器断路器的交流和直流断路要求原则

评分。

特区断路器。

H.R.C.保险丝：建筑及特点

静态继电器：发展和静态继电器的分类，不同类型的相位和幅度

电容器，

母线，断路器和隔离的安排。电力系统及其限流电抗器

故障MVA对于对称短路的配置计算。断路器的容量