HRC Fuse -Construction and Working, Types

A fuse is a small wire connected between two terminals that are mounted on an Insulating base and connected in series with a circuit. A fuse is the simplest and cheapest current interrupting device used to protect equipment from overload or short circuit faults in medium and low voltage applications. A high rupturing capacity fuse […]

Master Trip Relay 86-Lock Out relay working Function

Master Trip Relay is an important auxiliary relay in power system protection. In this article we will discuss, the working, function, and significance of the Master Trip Relay, also known as the 86 relay. We will explore the different types of Master Trip Relays, their classifications, and their specific applications in power systems protection. Additionally, […]

ELCB Working Principle, Construction, Full form, Types

Electrical safety is the main aim of any residential or commercial electrical installation. To prevent electrical shocks and identify insulation failures of electrical appliances, the ELCB full-form Earth Leakage Circuit Breaker is used. Generally, ELCBs are available at different ratings 16A,32A, 40A, and 63A, and sensitivity like 30mA, 100mA, and 300mA…. This device detects stray […]

Restricted Earth Fault Protection of Transformer and Generator

Differential protection is used to protect the transformer and generator against internal fault but for larger generators, additional protection is provided called Restricted earth fault protection. also known as REF protection. When the neutral of the transformer or generator is solidly grounded then the generator gets completely protected against earth fault. But neutral is grounded […]