Author name: Rabert T

Design of Instrument Air Systems

What is Instrument Air? Most power plants and process industries require the instrument air to run their process.   The instrument air is compressed air that is free from moisture and dust particles. The pneumatic equipment such as control valves, solenoid-operated valves, cylinders, actuators, and positioners require the instrument air to control the process. It is …

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What is Auxiliary Contact and how it works with MCB?

A miniature circuit breaker can provide much more than current protection, it can also provide remote tripping, status indicator, under-voltage/overvoltage protection, and other features. What is Auxiliary contact? Auxiliary contacts (or switches) are supplementary contacts that are added to a circuit to protect the main contact. This accessory allows you to check the status of a …

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TRIP CURVE OF MCB

What are the Characteristics of trip Curves of the MCB?

Trip Curve of MCB: The Trip Curve is a graphical representation of the circuit protection devices. Fuse, MCB’s, MCCB’s, supplementary protectors, motor protection circuit breakers, overload relays, electronic fuses, and air circuit breakers are all examples of circuit protection devices. The multiples of the current going through the miniature circuit breaker are represented on the horizontal X-axis. …

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