Electrical Apparatus For Switching Or Protecting Electrical Circuits – Trennschalteranlage. The Hochbahn Subway Network, With Lines U1 To U4, Forms A Large Part Of The Local Transport Network Operated In Hamburg. The Following Supply Networks Are Currently Differentiated: - 750 V Direct Voltage Network For Traction Current - 10 Kv And 400 V Alternating Voltage Network For Substations, Route Centers, Stops, Signal Boxes And Depots - 110 Kv And 20 Kv Alternating Voltage Network For The Alsterdorf Bus Depot (Bbd). In Addition, All Relevant Operating Information From The Above System Technology Is Displayed On The Network Control System Of The Central Control Room (Zsw). The Subway Is Supplied With Traction Current Through Rectifier Substations. The Substations Are Supplied With 10 Kv Three-Phase Ac Voltage From The Power Supply Company. In The Substations, This 10 Kv Medium Voltage From The Network Operator Is Converted Into 750 V Direct Voltage. To Further Distribute This Direct Current, 750 V Circuit Breaker Systems Are Used - They Form The Link Between The Substation And The Busbar. These 750 V Circuit Breaker Systems Make It Possible To Connect Or Disconnect Even Smaller Busbar Sections And Also To Ground Them. The 750 V Circuit Breaker Switchgear Within The Stops Must Be Gradually Replaced After A Service Life Of Around 25 Years. Safe Operation Of Circuit Breaker Systems Is Only Guaranteed If The Manufacturer Complies With The Standard Applicable To The Switchgear Combination And Also Provides Evidence Of This. Compliance With The Generally Recognized Rules Of Technology That Are Valid Today Is Deemed To Have Been Observed If The Conditions Of Din En 61439 And Din En 50122 Part 1-3 Railway Application - Fixed Systems - Electrical Safety, Earthing And Return Lines Are Adhered To. Factory-Finished Sheet Steel Cabinets, Suitable For Wall Installation Or Free Installation In The System Room, Must Be Supplied For The Circuit Breaker Systems. Each Switch Panel Has A Supporting Structure On Which A Maximum Of Two 750V Dc Switch-Disconnectors 4000 A With Motor Drive Are Mounted. The Option To Design A Switch Panel With Two 750V Dc Switch-Disconnectors In Widths Of 600Mm And 800Mm Must Be Available. All Additional Switching Devices Required For Local And Remote Control Are Installed In A Separate Control Cabinet (Control Panel). In Addition, The Installation Of The Switch Panels And The Wiring Of All Internal Control Cables Are Part Of The Scope Of Delivery. Depending On The Circumstances, The Installation Of The New Systems And The Transport Of The Dismantled Old Systems Can Take Place Either Directly Via The Stops (Delivery By Truck) Or From The Track (Delivery By A Hochbahn Work Train). However, Deliveries By Work Train Must Be Carried Out During The Night-Time Break.
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