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Monthly Archive for: «September, 2012»

How are sensitive circuits affected by noise?

Noise is only important if it is measured in relation to the communication signal, which carries the data or information. Electronic receiving circuits for digital communications have a broad voltage range, which… Read more

Sep 26, 2012 | Edvard

How are sensitive circuits affected by noise?

Inspection of Ground-Fault Protection Systems

This type of protection is defined by the NEC (National Electrical Code) to ensure protection against fire on electrical power installations. To ensure protection against fire: The NEC defines the use of… Read more

Sep 25, 2012 | Edvard

Inspection of Ground-Fault Protection Systems

Surge Protection of Electronic Equipment

Generally, power circuits have components that have large thermal capacities, which make it impossible for them to attain very high temperatures quickly except during very large or long disturbances. This requires correspondingly… Read more

Sep 22, 2012 | Edvard

Surge Protection of Electronic Equipment

Introduction to Static Protection Relays

The term ‘static’ implies that the relay has no moving parts. This is not strictly the case for a static relay, as the output contacts are still generally attracted armature relays. In… Read more

Sep 21, 2012 | Edvard

RSR-72 Static relay for motor re-start and reacceleration

Purpose of Equipotential Bonding

Equipotential bonding is essentially an electrical connection maintaining various exposed conductive parts and extraneous conductive parts at substantially the same potential. An earthed equipotential zone is one within which exposed conductive parts… Read more

Sep 20, 2012 | Edvard

Purpose of Equipotential bonding

Design of Overhead Transmission Line Foundation

The foundation is the name given to the system which transfers to the ground the various steady state (dead) and variable (live) loads developed by the transmission tower and conductors. Foundations may… Read more

Sep 19, 2012 | Edvard

Design of Overhead Transmission Line Foundation
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