DIAGNOSTICS OF TRANSFORMERS
PRECISE CONDITION ASSESSMENT FOR PRECISE DECISIONS.WWW.REINHAUSEN.COM
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nostics Service
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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
latin
g oi
l
Cellu
lose
insu
latio
n
Win
ding
s
Core
Tap
chan
gers
Bush
ings
Cabl
e te
rmin
als
com
part
men
t
Rout
ine
mon
itorin
g
Oil
cond
ition
Failu
re in
vest
igat
ion
Cond
ition
ass
essm
ent
Conf
orm
ity/c
omm
issi
onin
g
Spec
ial m
easu
rem
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
latin
g oi
l
Cellu
lose
insu
latio
n
Win
ding
s
Core
Tap
chan
gers
Bush
ings
Cabl
e te
rmin
als
com
part
men
t
Rout
ine
elec
tric
al t
ests
Failu
re in
vest
igat
ion
Cond
ition
ass
essm
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: [email protected]
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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