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Operating instructions manual
MR VVS Operating Instructions Manual
On-load tap-changer
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Contents
Table of Contents
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Table of Contents
Table of Contents
Introduction
Manufacturer
Completeness
Safekeeping
Notation Conventions
Hazard Communication System
Information System
Instruction System
Safety
Appropriate Use
Inappropriate Use
Fundamental Safety Instructions
Personnel Qualification
Personal Protective Equipment
Product Description
On-Load Tap-Changer
Function Description
Setup/Models
Nameplate and Serial Number
Protective Devices
Drive Shaft
Function Description
Design/Versions
Commissioning
Commissioning Transformer at Operating Site
Filling the Oil Compartment of the On-Load Tap-Changer with Oil
Bleeding On-Load Tap-Changer Head and Suction Pipe
Checking Motor-Drive Unit
Checking Protective Relay
Commissioning the Transformer
Operation
Operating the Motor-Drive Unit with the Hand Crank
Fault Elimination
Tripping the Protective Relay and Re-Commissioning the Transformer
Flap Valve in OPERATION Position
Flap Valve in off Position
Re-Commissioning the Transformer
Tripping the Pressure Monitoring Device and Putting the Transformer Back into Operation
Sensor in the OPERATION Position
Sensor in the off Position
Re-Commissioning the Transformer
Removing/Installing the Selector Switch Insert
Removing the Selector Switch Insert
Installing the Selector Switch Insert
Maintenance
Inspection
Maintenance Intervals
Changing the Insulation Fluid
Moving On-Load Tap-Changer to Adjustment Position
Removing Horizontal Drive Shaft
Emptying the Oil Compartment and Oil Conservator
Filling the Oil Compartment and Oil Conservator with Fresh Insulating Fluid
Installing Horizontal Drive Shaft
Centering On-Load Tap-Changer and Motor-Drive Unit
Performing DC Resistance Measurement on Transformer
Technical Data
Technical Data for On-Load Tap-Changer
On-Load Tap-Changer Properties
Permissible Ambient Conditions
Technical Data for Protective Relay
Special Models of Protective Relay
Protective Relay with CO Change-Over Contact as Tripping Switch
Protective Relay with Several Dry-Reed Magnetic Switches
Technical Data for Pressure Monitoring Device
Limit Values for Dielectric Strength and Water Content of Insulating Fluids
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Maintenance
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Maintenance Intervals
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®
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VACUTAP
VVS
Operating Instructions
5788897/03 EN
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