High Voltage Electrical Safety
Course Overview
In the field of high voltage equipment, safety play an important part. Electrical safety is one of most con-cern in workplaces where high voltage found. It has been that over a hundred people die each year be-cause the poor of high voltage safety in machines that are being repaired, set up, or serviced have not been properly locked out. The electrical safety proce-dure keeps employees from accidently starting up a machine without them knowing that the machine is under maintenance, and that people are currently working on it.
It is essential that only trained employees are in-structed to use this electrical safety procedure, and in addition to this, they should be made aware of all the aspects of electricity that revolve in the machines they operate. Anyone who works around these ma-chines, whether they’re included in the machines re-pair or not, should also be informed about these elec-trical safety procedures, lest they tamper with the lockout/tagout devices and cause danger. These peo-ple must always be informed when a Lockout Tagout electrical safety procedure is currently taking place, and that they are prohibited to work on the machines or even come near them when service is undergoing
Course Objectives
The course aims to make candidates aware of high voltage electric safety. Employees working in areas where there are potential electrical hazards shall be provided with, and shall use, electrical protective equipment that is appropriate for the specific parts of the body to be protected and for the work to be per-formed.
Delegates will gain a detailed appreciation of the following:
> Fundamental requirements for high voltage elec-tric safety
> Electric shock in high voltage equipment.
> Grounding system with high voltage equipment.
> High voltage protective equipment in a safe, reliable condition.
> Neutral grounding in high voltage equipment protective.
> Earth resistivity measurements for high voltage.
> Over voltages on power system and safety.
> High voltage Cables and safety
> Alternative forms of power switchgear and circuit breaker – current limiting, non-current limiting, etc.
> Power optimization equipment for real power and use of transformers, transmission lines, generators and motors devices to improve system operation
COURSE OUTLINE:
> Fundamental requirements for high voltage electric safety
> Overview of a typical systems covering generation, transmission and distribution
> Determination of flow of real (P) and reactive power (Q)
> Determination and control of fault level
> Introduction, switchgear definition, function main equipment
> Generation of high voltage
> Earthling switch
> Operation of high voltage equipment (circuit breaker, motors, transmission lines etc.)
> High voltage electric safety
Electric shock in high voltage equipment
> Electric Shock in high voltage
> Shock and human body
> How electricity hurts people
> Safety precaution to be taken in high voltage during maintenance
> Coping with rising demand for power - transmission and distribution
> The costs associated with increasing fault level
> Power switchgear equipment design and operation
> Arcl-ess Power switchgear
> Quality of switchgear equipment.
> Grounding system with high voltage equipment
Neutral grounding in high voltage protective equip-ment
> Ground –grid mesh electrode
> Failures causes and analysis of faults in high volt-age sides.
> A practical approach to safe grounding.
> The requirements for neutral grounding
> High voltage protective equipment in a safe, reliable condition.
> Grounding for power system plants
> Methods for decreasing grounding resistance
> Advantages and disadvantage of each grounding systems
> High Voltage Applications - Surge protection, cur-rent limiters network switching, etc.
Earthing and Electrical safety
> Earth electrode resistance
> Earth fault loop impedance.
> Requirements for RCD protection,
> Protective against mechanical damage.
> Optical Current Transducers for Protection - optical current sensors eliminate CT saturation
> Protection against corrosion
> High Voltage Applications - Surge protection, cur-rent limiters network switching, etc.
> Non-linear loads - harmonics at PCC - filtering - G5/4 requirements
Electric safety in high voltages power system
> Electric safety in High Voltage Cables
> Electric safety, Testing and maintenance of high voltage circuit breaker
> Electric safety in high voltage Switchgear Preventive maintenance
> System protection
> Electrical Insulation - Air and SF6 - the problems
> Condition Monitoring of Plant
> Power optimization equipment for real power and use of transformers, transmission lines, generators and motors devices to improve system operation
