ABB VD4 Series Instruction Manual - page 4
1
Summary
5
1.1
General
5
1.2
Standards and specifications
5
1.2.1
Switchgear manufacture
5
1.2.2
Installation and operation
5
1.3
Operating conditions
5
1.3.1
Normal operating conditions
5
1.3.2
Special operating conditions
5
2
Technical data
6
2.1
Technical data
6
Circuit-breakers for fixed installation
and on withdrawable part
2.2
Technical data
7
Releases and blocking magne
2.3
Technical data
7
Motor-operated mechanisms
2.4
Permissible number of vacuum interrupter
8
switching operations in relation to breaking
current
2.5
Dimensions
9
3
Structure and function
13
3.1
Structure of the breaker poles
13
3.2
Structure of the breaker operating mechanism
13
3.2.1 Releases, blocking magnet and auxiliary switches 13
3.3
Function
14
3.3.1
Charging of the spring energy store
14
3.3.2
Closing procedure
14
3.3.3
Opening procedure
14
3.3.4
Autoreclosing sequence
14
3.3.5
Quenching principle of the vacuum interrupter
14
4
Dispatch and storage
18
4.1
Condition on delivery
18
4.2
Packaging
18
4.3
Transport
18
4.4
Delivery
19
4.5
Intermediate storage
19
5
Installation
20
6
Commissioning/Operation
21
6.1
Note on safety at work
21
6.2
Preparatory activities
21
6.3
Operation of the circuit-breaker
21
6.3.1
Charging the spring energy storage mechanism
Circuit-breakers with charging motors
21
6.3.2
Closing and opening
21
6.3.3
Operating sequence
22
7
Maintenance
25
7.1
General
25
7.2
Inspection and functional testing
25
7.2.1
Switching devices in general
25
7.2.2
Stored-energy spring mechanism
25
7.2.3
Checking auxiliary switch settings on
withdrawable part
25
7.2.4
Testing of interlock conditions
26
7.2.5
Breaker pole
26
7.3
Servicing
26
7.3.1
Switching devices in general
26
7.3.2
Stored-energy spring mechanism
27
7.3.3
Breaker pole
27
7.4
Repair
27
7.5
Spare parts and auxiliary materials
28
8
Application of the X-ray regulations
31
4 Contents | VD4 Vacuum Circuit-breaker
Contents