ABB VD4 - Page 5

Instruction manual 534/01 | VD4 Vacuum-circuit-breaker 5
Contents Page
7 Commissioning/Operation 27
7.1 Note on safety at work 27
7.2 Preparatory activities 27
7.3 Movement of the withdrawable part 27
7.3.1 Manual insertion from the test/disconnected position to the service position 27
7.3.2 Manual withdrawable from the service position into the test/disconnected position 28
7.3.3 Motor-driven movement of the withdrawable part 28
7.3.4 Withdrawable from the test/disconnected position onto the service truck 28
7.3.5 Insertion from the service truck into the test/disconnected position 28
7.4 Operation of the circuit-breaker 28
7.4.1 Charging the spring energy storage mechanism 29
7.4.2 Closing and opening the circuit-breaker 29
8 Maintenance 31
8.1 General 31
8.1.1 Service-life 31
8.2 Inspection and functional testing 31
8.2.1 Switching device in general 31
8.2.2 Stored-energy spring mechanism 31
8.2.3 Breaker pole 32
8.2.4 Withdrawable assembly 32
8.3 Servicing 32
8.3.1 Switching devices in general 32
8.3.2 Stored-energy spring mechanism 32
8.3.3 Breaker pole 33
8.4 Repair 33
8.4.1 VD4 circuit-breaker run-on block 33
8.4.2 Replacement of circuit-breaker parts and accessories 33
8.4.3 Touch up of surfaces 33
8.4.4 Circuit-breakers in general 33
8.4.5 Replacement of contact systems 33
8.4.6 Replacement of withdrawable assembly 34
8.5 Testing withdrawable parts with a VD4 type circuit-breaker 34
8.5.1 Motor-driven withdrawable parts 34
8.5.2 Checking the correctness of dimensional settings 34
8.5.3 Checking auxiliary switch settings on type A withdrawable parts 34
8.5.4 Checking auxiliary switch settings on type B withdrawable parts 35
8.5.5 Checking the direction of rotation of the travel motors on motor-driven withdrawable parts 35
8.5.6 Testing of interlock conditions 35
8.6 Spare parts, auxiliary materials, lubricants 36
8.6.1 Spare parts 36
8.6.2 Auxiliary materials 38
9 Application of the X-ray regulations 42
10 Comparison of designations to VDE-DIN 40719 Part 2 and IEC 61346-1/IEC 61346-2 42