Medium voltage productsDS1Technical Guideline for Installation and User ManualSafety 31. Introduction 41.1 Environmental protection program 41.2 Packing and transport 41.3 Checking on receipt 41.4 Storage 51.5 Handling 51.6 End of life of product 61.7 Disposal methods 62. Product Description 72.1 General features 72.2 Reference Standards 82.3 Fixed capacitor-switch 82.4 Main electrical characteristics 82.5 Apparatus operating instructions 102.6 Description of the capacitor-switchclosing and opening operations 102.7 DS1 Closing and Opening switchingbehaviour 113. Description of the control and supply electricalinterface 123.1 Power Supply Characteristics 123.2 Description of the DS1 output 123.3 Electrical characteristics of the outputs 123.4 Description of DS1 inputs 133.5 Special INPUT - Only for commissioningand maintenance 133.6 Electrical characteristics of the INPUT 143.7 Input Acceptance Logic 143.8 DS1 functional descriptions 144. DS1 Diagnostics 164.1 Base Module Diagnostics 164.2 Master Diagnostics 164.3 Synchronization Diagnostics 174.4 Diagnostics Table 175. Installation Guideline 185.1 General 185.2 Before installing the apparatus: 185.3 Installation requirements 185.4 Installation of fixed apparatus 195.5 Additional installation recommendations 195.6 Preliminary operations 196. Fixed Apparatus power circuit connections 206.1 General directions 206.2 Mounting the connections 206.3 Mounting procedures 206.4 Three-phase power line connections 216.5 Load connection 216.6 Synchronization sensor 226.7 Voltage Sensor Connections 236.8 Earthing 236.9 Auxiliary circuit connection 237. Commissioning 247.1 General procedures 247.2 Startup and maintenance features 247.3 Pressure Monitoring 257.4 Interface summary for Maintenance andCommissioning 257.5 Commissioning - Test with no power,no sync 268. Periodical inspections 288.1 General 288.2 Checking program 288.3 Measurement of air pressure inside poles 288.4 Dry Air filling 288.5 Dry air filling procedure 288.6 Measurement of resistance across closedcontacts of poles 298.7 Replacement due to System malfunctions 298.8 Spare parts and accessories 29Annex A - Terminal Block for auxiliary control circuit 30Annex B - External drawing for DS1 Integration 31B.1 Overall dimensions 31B.2 Internal connections 31Provided by Northeast Power Systems, Inc. (NEPSI)