DIAGNOSTICS OF TRANSFORMERS

PRECISE CONDITION ASSESSMENT FOR PRECISE DECISIONS.WWW.REINHAUSEN.COM

Diag

nostics Service

ModernizationConsu

lting

TRANSFORMERLIFECYCLEPARTNER

YOUR ONE-STOP SHOP: COMPREHENSIVE TEST PORTFOLIO FOR TRANSFORMERS.

TRANSFORMER DIAGNOSTICS

OIL ANALYSISOil diagnostics are a fast, easy and inexpensive option for early detection of abnormalities developing in a transformer or on-load tap-changer.

OIL ANALYSIS ACTIVE PART COMPONENT APPLICATION

Insu

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Cellu

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Win

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Core

Tap

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Bush

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part

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Rout

ine

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Oil

cond

ition

Failu

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igat

ion

Cond

ition

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ent

Conf

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Spec

ial m

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ents

Dissolved gas analysis ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

Moisture content ■ ■ ■ ■ ■ ■ ■ ■ ■

Breakdown voltage ■ ■ ■ ■ ■ ■ ■ ■

Dissipation/power factor ■ ■ ■ ■

Acidity ■ ■ ■ ■

Interfacial tension ■ ■ ■ ■

Visual inspection ■ ■ ■ ■

Color index ■ ■ ■ ■

Particle count ■ ■ ■ ■ ■

Inhibitor content ■ ■ ■ ■

Solids content/sludge ■ ■ ■ ■

Oxidation stability ■ ■ ■

Furan analysis ■ ■ ■

Methanol/ethanol ■ ■ ■

PCB content ■ ■ ■

Total sulfur/corrosiveness ■ ■ ■ ■

Density ■ ■

Viscosity ■ ■

Flash point ■ ■

Pour point ■ ■

Contaminants ■ ■

Metal passivator content ■ ■ ■

Permittivity/resistivity ■ ■

Other tests available on request

ELECTRICAL TESTSA selection of electrical measurements can be used to identify abnormalities and introduce adequate countermeasures.

Life cycle of a transformer

Routine monitoring ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

Oil condition ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

Routine electrical tests ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

Fault analysis ■

Detailed condition assessment ■ ■ ■ ■

Good

FailedAge

Decision to repair

Decision to extend service life

Accelerated aging

Decision to replace

Condition

ELECTRICAL TESTS ACTIVE PART COMPONENT APPLICATION

Insu

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Cellu

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Win

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Tap

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ests

Failu

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igat

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Cond

ition

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ent

Com

mis

sion

ing

Spec

ial m

easu

rem

ents

Winding resistance ■ ■ ■ ■ ■ ■ ■ ■

Dynamic resistance measurement (DRM) ■ ■ ■ ■ ■ ■

Insulation resistance ■ ■ ■ ■ ■ ■

Transformation ratio/phase angle ■ ■ ■ ■ ■ ■

Capacitance ■ ■ ■ ■ ■ ■ ■ ■ ■

Dissipation/power factor ■ ■ ■ ■ ■ ■ ■

Vibroacoustic measurement (VAM) and motor current ■ ■ ■ ■ ■

Short-circuit impedance (leakage reactance) ■ ■ ■ ■

Excitation current ■ ■ ■ ■ ■

Sweep Frequency Response Analysis (SFRA) ■ ■ ■ ■ ■ ■

Frequency Domain Spectroscopy (FDS) ■ ■ ■ ■ ■

Polarization/depolarization current (PDC) ■ ■ ■ ■

Demagnetization ■ ■

Frequency response of stray losses (FRSL) ■ ■

Partial discharge ■ ■ ■ ■ ■ ■

Other tests available on request

Maschinenfabrik Reinhausen GmbHFalkensteinstrasse 893059 Regensburg, Germany

Phone: +49 941 4090-0E-mail: sales@reinhausen.comwww.reinhausen.com

Please note: The data in our publications may differ from the data of the devices delivered. We reserve the right to make changes without notice.IN6123850/00 EN – DIAGNOSTICS – F0368700 – 11/19 – uw – ©Maschinenfabrik Reinhausen GmbH 2018

THE POWER BEHIND POWER.

MORE POWER. MORE VALUE.

More than just data.

More knowledge about the transformer

I Thanks to our decades of experience, we provide a well-founded interpretation of the measured values along with clear, practical recommendations for action

I In the area of tap-changer diagnostics, our specialists have comprehensive expert knowledge that is unsurpassed by anyone else worldwide.

Your one-stop shop

I We provide the entire measurement portfolio and corresponding services for power transformers from a single source

I In addition to oil analyses and electrical tests, we also provide a detailed visual inspection and infrared thermography

Get more out of your transformers

I Our experts provide you with a comprehensive and independent assessment of the condition of your transformers as a basis for making maintenance and investment decisions

I Extend the service life of your transformers through suitable optimization measures and a condition-based maintenance strategy

Benefi t from our service network

I Worldwide MR service networkI Can be reached 24/7 and support is quickly on site

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