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VD4X
ABB VD4X User Manual
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VD4X
INSTRUCTION MANUAL
A1 = T
erminal for conductor bar
A2
= Fron
t terminal for conductor bar
D
= Pressur
e sensor for circuit-break
er compartment
F = Filler connector for cir
cuit-breaker c
ompar
tment
K = Plug
Terminal for rated curreut
≤
1250
A
-1
2/17.
5
/24/40.5
k
V≤
31.5
k
V
Panel cutout
View X and Y
1) Busbar connection arranged above or bolow the breaker pole depending on the suitchgear system.
—
Figure 2/5
11
13
Table of Contents
Content
3
Safety
4
Summary
5
General
5
Standards and Specifications
5
Apparatus Manufacture
5
Technical Data
6
Circuit-Breaker VD4X
6
Technical Data – Equipment
7
Charging Motor for Stored-Energy Spring Mechanism
7
Releases / Blocking Magnet
7
Dimensions
10
Structure and Mode of Action
15
Structure of the Breaker Poles
15
Operating Mechanism Equipment
15
Basic Operating Equipment
15
Closing Procedure
16
Auto-Reclosing Sequence
16
Opening Procedure
16
Quenching Principle of the Vacuum Interrupter
16
Commissioning / Operation
23
Notes on Safety at Work
23
Circuit-Breaker Operation
23
Emergency Manual Operation
23
Maintenance
24
Service-Life
24
Inspection and Functional Testing
24
Switching Devices in General
24
Stored-Energy Spring Mechanism
25
Scope of Functional Testing
25
Breaker Pole
25
Run-On Block
25
Spare Parts and Auxiliary Materials
26
Auxiliary Materials
26
Application of the X-Ray Regulations
27
4
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ABB VD4X Specifications
General
Brand
ABB
Model
VD4X
Category
Circuit breakers
Language
English
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