On-load tap-changer OILTAP® V - Technical Data TD 82/03

Oct 26, 2026

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Technical Data TD 82/03 specifies the type-specific performance parameters of the on-load tap-changer OILTAP® V for transformer tap changing applications. It provides an overview covering rated through-current, step voltage, step capacity, frequency range, operating positions, insulation and withstand voltages. The document also includes design-relevant restrictions and contact life information, and references the general section TD 61 for key topics such as potential connection and leakage inductance. Dimensional drawings and installation diagrams support the calculator and transformer designer.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages40

Reading Time1 h 41 min

AccessFree to download

1 General

1.1 Summary of the technical data

1.2 Survey

2 Technical Data

2.1 Rated through-current (Iu), rated step voltage (Ui) and step capacity (PStN)

2.2 On-load tap-changer V III 250 Y/D and V III 400 Y/D

2.3 Restriction of the rated step voltage Ui

2.4 Contact life

2.5 Rated withstand voltages of the internal insulation

3 Appendix – dimension and installation drawings

| [www. reinhausen.com](www. reinhausen.com) | On-load tap-changer OILTAP® V
Technical Data TD 82/03 | | --- | --- | | | | Table of Contents Table of Contents 1 General .................................................................................................................................................................................................................. 4 1.1 Summary of the technical data ....................................................................................................................................................... 4 1.2 Survey ....................................................................................................................................................................................................... 6 2 Technical Data ................................................................................................................................................................................................... 13 2.1 Rated through-current (Iu), rated step voltage (Ui ) and step capacity (PStN) ................................................................ 13 2.2 On-load tap-changer V III 250 Y/D and V III 400 Y/D .............................................................................................................. 13 2.3 Restriction of the rated step voltage Ui ........................................................................................................................................ 14 2.4 Contact life ............................................................................................................................................................................................. 14 2.5 Rated withstand voltages of the internal insulation ................................................................................................................ 15 3 Appendix – dimension and installation drawings .............................................................................................................................. 17 NOTE These technical data are intended for the calculator and designer of the transformer. These type-specific data are only valid in connection with the information contained in the general section (TD 61) since this section contains important information on such subjects as potential connection, leakage inductance, current division, and so on. Dimensional drawings and connection diagrams are subject to change without prior notice. Drawings submitted during bidding and ordering are always binding. Since the on-load tap-changer is delivered to the specifications of the transformer manufacturer, the transformer manufacturer is responsible for selecting the correct properties of the on-load tap-changer so that the requirements of the transformer are met. TD 82/03 EN 3 1 General 1 General 1.1 Summary of the technical data | On-load tap-changer | | V III 200 Y | | | V III 200 D | | V III 350 Y | | | V III 350 D | | V I 350 | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Number of poles and application | | 3
neutral point | | | 3
at any point on
the winding | | 3
neutral point | | | 3 1 at any point on the winding | | | | | Max. rated through-current Ium (in A) | | 200 | | | | | 350 | | | | | | | | Rated short-time withstand current (in kA) | | 4 | | | | | 5 | | | | | | | | Rated short-circuit duration (in s) | | 3 | | | | | 3 | | | | | | | | Rated peak withstand current (in kA) | | 10 | | | | | 12,5 | | | | | | | | Max. rated step voltage U im (in V) | 10 contacts
12 contacts
14 contacts | 1500
1200 to 1400 1000 | | | | | 1500
1200 to 1400 1000 | | | | | | | | Step capacity 10 contacts | | 300 | | | | | 525 | | | | | | | | (PStN)
(in kVA) | 12 contacts
14 contacts | 280
200 | | | | | 420
350 |

FAQs

What is covered in TD 82/03 for the OILTAP® V on-load tap-changer?

TD 82/03 compiles type-specific electrical and operating parameters such as rated through-current, rated step voltage, step capacity, frequency range, insulation and rated withstand voltages, plus notes on contact life and related restrictions.

Why does TD 82/03 refer to the general section TD 61?

The document states that the type-specific data are only valid when used together with TD 61, because TD 61 contains important connection and electrical interaction topics such as potential connection, leakage inductance, and current division.

Who is responsible for selecting the correct tap-changer properties for a transformer?

Because the on-load tap-changer is delivered according to the transformer manufacturer’s specifications, the transformer manufacturer is responsible for selecting the correct properties to meet transformer requirements.

Oct 26, 2026

Upload by Rhys