MR VACUTAP - Page 65

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7 Maintenance

Maschinenfabrik Reinhausen GmbH 2020 655788897/03 EN VACUTAP

VVS

1. Loosen hose clips on protective cover of horizontal drive shaft, remove

protective cover.

Figure53: Removing protective cover

Main Page

Table of Contents3
Introduction6
Manufacturer6
Completeness6
Safekeeping6
Notation Conventions7
Hazard Communication System7
Information System8
Instruction System8
Safety10
Appropriate Use10
Inappropriate Use11
Fundamental Safety Instructions11
Personnel Qualification13
Personal Protective Equipment14
Product Description15
On-Load Tap-Changer15
Function Description15
Setup/Models16
Nameplate and Serial Number18
Protective Devices18
Drive Shaft24
Function Description24
Design/Versions25
Commissioning30
Commissioning Transformer at Operating Site30
Filling the Oil Compartment of the On-Load Tap-Changer with Oil30
Bleeding On-Load Tap-Changer Head and Suction Pipe31
Checking Motor-Drive Unit33
Checking Protective Relay34
Commissioning the Transformer35
Operation36
Operating the Motor-Drive Unit with the Hand Crank36
Fault Elimination38
Tripping the Protective Relay and Re-Commissioning the Transformer40
Flap Valve in OPERATION Position41
Flap Valve in off Position41
Re-Commissioning the Transformer41
Tripping the Pressure Monitoring Device and Putting the Transformer Back into Operation42
Sensor in the OPERATION Position42
Sensor in the off Position42
Re-Commissioning the Transformer43
Removing/Installing the Selector Switch Insert43
Removing the Selector Switch Insert43
Installing the Selector Switch Insert50
Maintenance61
Inspection62
Maintenance Intervals63
Changing the Insulation Fluid64
Moving On-Load Tap-Changer to Adjustment Position64
Removing Horizontal Drive Shaft64
Emptying the Oil Compartment and Oil Conservator66
Filling the Oil Compartment and Oil Conservator with Fresh Insulating Fluid69
Installing Horizontal Drive Shaft72
Centering On-Load Tap-Changer and Motor-Drive Unit73
Performing DC Resistance Measurement on Transformer73
Technical Data75
Technical Data for On-Load Tap-Changer75
On-Load Tap-Changer Properties75
Permissible Ambient Conditions75
Technical Data for Protective Relay76
Special Models of Protective Relay78
Protective Relay with CO Change-Over Contact as Tripping Switch78
Protective Relay with Several Dry-Reed Magnetic Switches79
Technical Data for Pressure Monitoring Device79
Limit Values for Dielectric Strength and Water Content of Insulating Fluids81

MR VACUTAP - Page 65

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