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VACUTAP VV III 250 Y/D
MR VACUTAP VV III 250 Y/D User Manual
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On-load tap-changer
VACUTAP
®
VV
®
Operating Instructions
4349312/01 EN
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
6
Manufacturer
6
Completeness
6
Safekeeping
6
Notation Conventions
7
Hazard Communication System
7
Information System
8
Instruction System
8
2 Safety
10
Appropriate Use
10
Inappropriate Use
11
Fundamental Safety Instructions
11
Personal Protective Equipment
13
Personnel Qualification
14
3 Product Description
15
On-Load Tap-Changer
15
Function Description
15
Setup/Models
16
Nameplate and Serial Number
18
Protective Devices
18
Drive Shaft
24
Function Description
24
Design/Versions
25
4 Commissioning
30
Commissioning Transformer at Operating Site
30
Filling the Oil Compartment of the On-Load Tap-Changer with Insulating Fluid
30
Bleeding On-Load Tap-Changer Head and Suction Pipe
32
Checking Motor-Drive Unit
33
Checking Protective Relay
34
Checking Pressure Monitoring Device
35
Commissioning the Transformer
36
5 Operation
37
Operating the Motor-Drive Unit with the Hand Crank
37
6 Fault Elimination
39
Tripping the Protective Relay and Re-Commissioning the Transformer
41
Flap Valve in OPERATION Position
42
Flap Valve in off Position
42
Re-Commissioning the Transformer
42
Tripping the Pressure Monitoring Device and Putting the Transformer Back into Operation
43
Sensor in the OPERATION Position
43
Sensor in the off Position
43
Re-Commissioning the Transformer
44
7 Maintenance
45
Inspection
46
Maintenance Intervals
47
Changing the Insulation Fluid
49
Moving On-Load Tap-Changer to Adjustment Position
49
Removing Horizontal Drive Shaft
49
Emptying the Oil Compartment and Oil Conservator
51
Filling the Oil Compartment and Oil Conservator with Fresh Insulating Fluid
53
Installing Horizontal Drive Shaft
55
Centering On-Load Tap-Changer and Motor-Drive Unit
56
Performing DC Resistance Measurement on Transformer
56
8 Technical Data
58
Technical Data for On-Load Tap-Changer
58
On-Load Tap-Changer Properties
58
Permissible Ambient Conditions
58
Technical Data for Protective Relay
59
Special Models of Protective Relay
61
Protective Relay with CO Change-Over Contact as Tripping Switch
61
Protective Relay with Several Dry-Reed Magnetic Switches
62
Technical Data for Pressure Monitoring Device
62
Limit Values for Dielectric Strength and Water Content of Insulating Fluids
64
9 Drawings
65
4
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MR VACUTAP VV III 250 Y/D Specifications
General
Brand
MR
Model
VACUTAP VV III 250 Y/D
Category
Industrial Equipment
Language
English
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