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Siemens DPU Series User Manual
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Vacuum
Circu
it Breakers
(Vehi
cle)
Type DPR/DPU*
4.16kV to 1
5kV
Instructions
Installation
Operation
Maintenance
SGIM
-
9908F
*"U" in DPU defines an
upgrade in MVA or amperage
rating from t
he
original. See rating label to determine what
has been uprated.
2
Table of Contents
Table of Contents
3
Introduction and Safety
4
Introduction
4
Qualified Person
4
Signal Words
4
Dangerous Procedures
4
Field Service Operation
4
Receiving, Handling and Storage
5
Introduction
5
Receiving Procedure
5
Shipping Damage Claims (When Applicable)
5
Handling Procedure
5
Storage Procedure
5
Space Heating
5
Vehicle Description
6
Vehicle Function and Operational Interlocks
6
Alignment
6
Recommended Tools
6
Installing Circuit Breaker into Cubicle
6
Levering Device and Circuit Breaker Interlock
6
Floor Interlock and Operating Lever
7
Automatic Floor Tripping and Closing Spring Release
8
Secondary Contacts
8
Rail Latch
8
Continuous Current Interlock
8
Removing Circuit Breaker from Cubicle
8
Control Cable Box
8
Insulating Barriers
8
Maintenance
9
Introduction and Maintenance Intervals
9
Recommended Maintenance and Lubrication
9
Removal from Switchgear
9
Circuit Breaker Operator Tasks
10
Checks of the Primary Power Path
10
Cleanliness Check
10
Primary Disconnects
10
Fastener Check
10
Electrical Control Checks
10
Insulation and Contact Resistance Test
11
Inspection and Cleaning of Circuit Breaker Insulation
11
Racking Mechanism
11
MOC Actuator System
11
Cubicle MOC Forces
12
Pantograph Setup
12
Floor Interlock and Operating Lever Adjusting Instructions
13
Functional Tests
16
Periodic Maintenance Intervals
16
4
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Siemens DPU Series Specifications
General
Series
DPU
Poles
1, 2, 3, 4
Trip Type
Thermal-Magnetic
Voltage
240VAC
Interrupting Capacity
10kA at 240V AC
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