Recommendations of GCC CIGRE 9th Annual Seminar

Power System insulation  & Coordination

(Abu-Dhabi 28-29 October 1998)



1- Insulation coordination studies are essential in order to achieve optimum reliable systems.



2- Substation equipment should have been fully typed tested to the relevant latest IEC Standards



3- In future spark gaps and arcing horns to be discouraged for usage as element s for over voltage protection in substations.



4- It is strongly recommended to use reliable and economic metal oxide surge arrestors.




5- Polymeric (silicon rubber) insulators up to now seem optimal for the GCC countries, however still more exchange of experience regarding the long-term performance is required.



6- Modern analysis techniques should be used for system studies regarding over voltage protection of air insulated switchgear (AIS) and gas insulated switchgear (GIS) substations.

Donor Members

Energoprojekt Entel Ltd


ACWA Power

Saudi Arabia

Oman Electricity Transmission Co.


GCC Interconnection Authority (GCCIA)

Saudi Arabia

Collective Members

Midal Cables Company Limited


Riyadh Cables Group of Companies

Saudi Arabia

IMCO Engineering and Construction Co W.L.L



Saudi Arabia

Intelligent Devices and Systems

United Arab Emirates

Bahra cables Company

Saudi Arabia

Al Ahleia Switchgear Co.