SAFE OPERATION & MAINTENANCE OF SWITCHGEAR

Training Safe Operation & Maintenance Of Switchgear – Switchgear (and circuit breakers) are obviously critical components in electrical distribution systems and their operation significantly affects the overall operation of the system. The workshop will discuss application, installation, maintenance and testing issues relating to medium and high voltage switchgear and circuit breakers. There will also be a coverage of low voltage switchgear. You will receive a thorough grounding in switchgear theory and standards. You will gain a solid understanding of the issues associated with the proper application, installation and maintenance of these critical items of equipment with an overriding emphasis on safety. This comprehensive and practical workshop emphasises medium voltage switchgear which represents most of the switchgear installed on electrical distribution systems. The focus here is on air blast, oil, SF6 and vacuum circuit breakers. Case studies covering the main manufacturer’s equipment will illustrate the important practical principles. Other power system protection components will be discussed as well to ensure that switchgear is understood in the correct context.

Materi Pelatihan Safe Operation & Maintenance Of Switchgear :

SWITCHGEAR – ORIGINS & TYPES

Single line diagrams

Active and passive network components

Circuit breaker utilisation

Alternative forms of MV switchgear ring main units, load breaking/fault making switches,

Fuse switches

HV fuses in combination with, and as alternative to circuit breakers

Auto-reclosers and auto-reclose operation

APPLICATION OF SWITCHGEAR

Principles of current interruption

Plain break circuit breakers

Bulk and small oil volume circuit breakers

Turbulator (explosion pot)

Operating mechanisms

Transfer earth circuit breakers

Air break and air blast switchgear

SF6 and Vacuum

Switchgear in association with disconnectors

Fixed and withdrawable designs

Switchgear standards

Factors affecting switchgear selection

SPECIFICATION OF SWITCHGEAR

Switchgear rating – highest system and impulse withstand voltages, load and short circuit currents

Simple and complex protection systems

Switchgear ancillaries, measurement CTs, VTs, relays

Cable terminations

Indoor and outdoor operation

Substation and switch room layouts and design

SHORT CIRCUIT TESTING

Symmetrical and asymmetrical breaking

Make and break operations

Understanding test oscillograms

SAFETY POLICIES

General safety precautions and the use of personal protective equipment

Principles of safety rules

Principles of personnel authorisation

Operative training for safe operation of switchgear

Isolation in a circuit breaker context

Safety documentation

Operational and safety locking, caution and danger notices

Safe working in a substation environment

Safety interlocks

Substation alarms

Individual study task and presentation -safety policies in my company and how they might be improved

OPERATION OF MODERN SWITCHGEAR

ASSET MANAGEMENT IN A SWITCHGEAR CONTEXT

Principles of time and condition based asset management

Asset registers

Asset management systems

DIAGNOSTICS, TESTING & MAINTENANCE

Switchgear inspection methodologies

Partial discharge measurement and survey

Timing tests

Thermovision

Mechanisms of deterioration

Principles of circuit breaker maintenance

Maintaining oil circuit breakers

Contact maintenance and contact wipe

Oil testing

Maintaining vacuum circuit breakers

Maintaining SF6 circuit breakers

SOPs and DINs

Switchgear defects and defect control systems