Tenders Are Invited For Construction Work – Administration Building 09.26A - (Lsre) Ve 04.5 Medium Voltage S ... in Germany

Work Detail

Construction Work – Administration Building 09.26A - (Lsre) Ve 04.5 Medium Voltage Switchgear. The Medium-Voltage Switchgear Must Be Designed With The Following Technical And Design Features: · The Medium-Voltage Part Must Be Designed In Such A Way That The Primary Technical Components Can Be Operated Maintenance-Free Or With Little Maintenance Over The Intended Technical Service Life And Are Largely Independent Of External Environmental Influences. · Compact, Space-Saving Design With The Smallest Possible Panel Dimensions Thanks To The Gas-Insulated Design. · Arc Fault-Tested Version In Accordance With Iec 62271-200, Classification At Least Iac A Fl Or Corresponding To The Required Installation Type Iac A Flr. · No Work On The Insulating Gas May Be Required On Site For Assembly, Expansion And Operation. · The Insulation System Must Be Permanently Gas-Tight And Hermetically Sealed. · Use Of An F-Gas-Free Insulation Medium Without Fluorinated Greenhouse Gases. · The Insulating Medium Used Should Consist Exclusively Of Components Of The Ambient Air Or Comparable Environmentally Friendly Gas Mixtures. · Three-Pole, Field-By-Field Hermetic Encapsulation Of The Primary Part Made Of Corrosion-Resistant Metallic Material, Preferably Stainless Steel. · Hermetically Sealed Primary Encapsulation Of The Live Main Circuit. · All Switching Devices Must Be Operable From The Front Of The Control Panel. · Use Of Vacuum Circuit Breakers With The Possibility Of Electrical Remote Control. · The Insulating Properties Of The Insulating Medium Used Must Be Guaranteed To Be Constant And Reliable Over The Intended Operating Period. · Current Transformers In The Branch Panels Should Preferably Be Arranged As Toroidal Core Current Transformers Outside The Hermetic Primary Encapsulation So That They Are Not Exposed To Any Dielectric Stress From The Insulating Medium. · Voltage Transformers Must Be Designed In A Touch-Safe, Pluggable Version. · Drives, Auxiliary Switches And Other Mechanical Actuation Devices Of The Switching Devices Must Be Located Outside The High-Voltage Rooms And Must Be Accessible For Maintenance And Testing Purposes. · The System Must Be Designed For A High Level Of Operational And Supply Security As Well As A High Level Of Personal Protection. · A Suitable Pressure Relief Device Must Be Provided In The Event Of An Arc Fault. · Capacitive Voltage Taps Or A Capacitive Voltage Testing System Must Be Provided On The Cable Branches. This Must Make It Possible To Safely Determine The Absence Of Voltage On The Front Of The Switch Panel Without Impairing The Intended Level Of Contact And Protection Of The Switchgear. · The Switchgear Must Be Designed In Such A Way That A Later Expansion Of The System Is Possible With As Little Disruption To Ongoing Operations As Possible And Without A Long-Term Shutdown Of The Entire System. · The Entire Medium-Voltage Switchgear Must Be Designed In Accordance With The Applicable Technical Connection Conditions, Guidelines And Specifications Of The Responsible Local Network Operator. · Request

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