LIGHTNING PROTECTION – INTRODUCTION

Basic Introduction to Relay Protection Testers

Basic Introduction to Relay Protection Testers

The relay protection tester is a universal testing device for relay protection, mainly used for testing and researching electromagnetic, integrated circuit, and microcomputer based protection relays and protection systems of various voltage levels. These testers replicate numerous fault events and operational scenarios to ensure that the relays respond correctly. Long term cost reduction (TCO) for trainings and maintenance by reduce variety of relays A fast and selective arc fault mitigation for air-insulated LV & MV switchgear and Relion protection and control relays and sensor technology protect staff and plant facilities for many years. Traditional protective relay books are written by engineers as a resource for engineers to use when modeling the electrical system or creating relay settings, and they often have very little practical use for the test technician in the field.

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Lightning protection network and distribution box

Lightning protection network and distribution box

For lightning protection of distribution box transmission line, reasonable lightning protection methods shall be adopted through technical and economic comparison according to the voltage level, load nature and system operation mode of distribution box line, combined. This product is applicable to low-voltage power supply and distribution system with power grid voltage below 1000V and frequency of 50/60Hz. A power outage can result in high costs for corporate customers, for example due to production plant downtime, as well as a reduced quality of life for private customers – and an image. When there is Thor is all about protecting against the damaging effects of power. For almost 100 years, OBO has been devel-oping and producing standard-compliant lightning pro-tection components.

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Relay Protection for First-Year Students

Relay Protection for First-Year Students

This guide represents a short overview of fundamentals of a power system protection, operating principles and relay characteristics as well as description of main switchgear components like various types of circuit breakers, CTs and PTs, relays etc. Operating Principles and Relay Construction: Electromagnetic relays, thermal relays, static relays, microprocessor based protective relays Time-current characteristics, current setting, over current protective schemes, directional relay, protection of parallel feeders, protection of ring mains. At the completion of this course, students will be able to test phase / ground time over current (51) and phase / ground instantaneous over current (50) protection elements on electromechanical and microprocessor feeder protection relays.

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