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MR VACUTAP VV III 250 Y/D User Manual

MR VACUTAP VV III 250 Y/D
80 pages
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On-load tap-changer
VACUTAP
®
VV
®
Operating Instructions
4349312/01 EN

Table of Contents

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MR VACUTAP VV III 250 Y/D Specifications

General IconGeneral
BrandMR
ModelVACUTAP VV III 250 Y/D
CategoryIndustrial Equipment
LanguageEnglish

Summary

2 Safety

2.3 Fundamental safety instructions

Provides essential safety guidelines for transport, installation, operation, and maintenance.

3 Product description

3.1 On-load tap-changer

Details the function, setup, and components of the on-load tap-changer.

3.1.1 Function description

Explains how the on-load tap-changer adjusts transformer transmission ratio without load flow interruption.

3.1.2 Setup/models

Shows the main components of the on-load tap-changer and details pipe connections.

3.1.4 Protective devices

Details the protective devices equipped with the on-load tap-changer.

3.1.4.1 Protective relay

Describes the function, design, and versions of the protective relay.

3.1.4.2 Pressure monitoring device DW

Explains the function, design, and versions of the DW 2000 pressure monitoring device.

3.2 Drive shaft

Details the function, design, and types of the drive shaft.

3.2.1 Function description

Explains the drive shaft's role as a mechanical connection and its function.

3.2.2 Design/versions

Details the construction and different versions of the drive shaft.

4 Commissioning

4.1 Commissioning transformer at operating site

Steps for commissioning the transformer at the site before energizing.

4.1.1 Filling the oil compartment of the on-load tap-changer with insulating fluid

Instructions for filling the tap-changer oil compartment with suitable insulating fluid.

4.1.2 Bleeding on-load tap-changer head and suction pipe

Procedures for bleeding air from the tap-changer head and suction pipe.

4.1.4 Checking protective relay

Procedure for checking the functionality of the protective relay.

4.1.5 Checking pressure monitoring device

Steps to check the functionality of the pressure monitoring device.

4.1.6 Commissioning the transformer

Final steps to commission the transformer after all checks are completed.

5 Operation

6 Fault elimination

6.1 Tripping the protective relay and re-commissioning the transformer

Procedure for handling protective relay trips and recommissioning the transformer.

6.2 Tripping the pressure monitoring device and putting the transformer back into operation

Procedure for handling pressure monitoring device trips and recommissioning.

7 Maintenance

7.3 Changing the insulation fluid

Procedures for changing the insulating fluid in the tap-changer and oil conservator.

8 Technical data

8.1 Technical data for on-load tap-changer

Provides electrical and mechanical data for the on-load tap-changer.

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