IEEE C37.123-2016 pdf free.IEEE Guide for Specifications for High-Voltage Gas-Insulated Substations Rated 52 kV and Above.
The specification generally should include a statement that requires the supplier to supply the GIS in accordance with the Purchaser’s specification and the referenced standards. The specification should also state which standards should be applicable in the event of conflict between standards, and indicate which takes precedence in the event ofconflict between the purchaser’s specification and the rctirenced standards. The speciflcation should identify the standards, including purchaser’s own in-house standards, practices. and drawings that must be complied with by the supplier during the provision of the GIS.
2. Normative references
The follo’ang ickienced docuineiii’. are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
ASTM H 117. Standard Practice for Operating Salt Spray (Fog) Apparatus.
ASTM 1)2472, Specification for Sulfur Ilexafluoride.
Usual and unusual service conditions are described in Clause 2 of IEEE Std C37.122. and Clause 2 of IEEE Std C37. 100.1. The users should review these clauses for the unusual service conditions to determine if any apply to their system. If any of the actual service conditions differ from these normal (usual) service conditions. these should be specified in Annex A.
5. Scope of supply
5.1 General
The user specification should clearly indicate what is to be supplied by the (115 manufacturer, It should also clearly indicate what is not to be supplied by the manufacturer, and the services that will be furnished by the user at the project site. The following is a typical scope of the equipment and services to be furnished by the user and the supplier. Annex A should he used to provide a detailed listing of the scope of supply. The user should indicate the application of the equipment (i.e.. type of substation for which the (IlS will be used).
Project teams benefit from clear definition of project scope. This part of the specification defines the deliverables and the constraints for the project, and facilitates communication and cooperation toward the project goals. The deliverables are engineering studies and services, documentation, equipment supply, installation services, and testing services. The major constraints are as follows:
a) Substation one-line diagram (including any applicable future provisions),
b) [‘hysical constraints for the GIS: areas and heights available for the GIS and definition of areas excluded from use along with any construction access restrictions. These will include the locations of physical barriers like retaining walls and unmovable conduit or cable trough.
C) Direction of connected lines/cables.
d) Any fixed locations for primary voltage terminations including phasing.
e) Schedule for the project including time when the jobsite will be ready to receive equipment and any sequencing or outage planning restrictions that would change the normal progression of the work.
f) Scope boundaries for the engineering, supply, installation, verification and testing of the GIS. A pictorial example of scope division for equipment supply is shown in Figure I.IEEE C37.123 pdf free download.