Tenders Are Invited For Supply Of Grounding Resistors

Tenders are invited for Supply of Grounding Resistors. 1. GENERAL This specification cover Neutral Earthing Resistor metal grid type, for earthing 12kV, 20kA, 3 sec, system neutral associated with the transformer, complete with all necessary-supporting structures. 1.2 SERVICE CONDITION Maximum ambient temperature 55°C Lowest ambient air temperature - 5°C Average relative humidity 40%- 90% Annual average rainfall approx. 30 CMS Annual average thunderstorm days 16 1.3 STANDARS Neutral Earthing Resistor covered by this specification shall comply with the requirement of the latest edition of the following standards unless otherwise stated in this specification. Terminology, and Test Procedure for Neutral Grounding Devices: ANSI/IEEE Standard 32 - 1972 Degrees of protection provided by enclosures (IP Code): IEC 60 529 High-voltage switchgear and controlgear - Part 1: Common specifications IEC 62 271 1 (replacing IEC 60 694) Metal-Enclosed Switchgear and Controlgear for rated voltages above 1 kV and up to 52 kV: IEC 62 271 200 (replacing IEC 60 298) Insulation co-ordination - Part 1: Definitions, principles and rules / Part 2: Application guide IEC 60 071 - 1 and IEC 60 071 - 2 Insulated bushings for alternating voltages above 1000 V: IEC 60 137 Characteristic of indoor and outdoor post insulators for systems with nominal voltages greater than 1000 V: IEC 60 273 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V: IEC 60 168 Hot dip galvanized coatings on fabricated iron and steel articles -- Specifications and test methods: Hot Dip Galvanizing to Sendzimir Process Z275 ISO 1461 :1999 BS 729 Alternating Current Disconnectors and Earthing Switches: IEC 62 271-102 Instrument Transformers - Part 1: Current Transformers IEC 60 044 Announcement date 12-12-2024 Closing date 08-01-2025 Price of the copy 20 dinars Tender Entry Guarantee 5% [Disclaimer: The above text is machine translated. For accurate information kindly refer the original document.] Tender Link : https://www.edco.jo/BidsPages/ActiveBids