Predictive Maintenance of Power TransformersDiagnostic and condition based maintenance tests on Power Transformers in Substations, Power Plants and large Industrial Plants.
www.tecnalia.com
TECHNOLOGICAL SERVICES
AIMED AT
• Utilities
• Power plants
• Manufacturers of electrical equipment
• Industrial plants
• Promoters of wind farms
• O&M companies
TESTS
• Tan Delta and capacitance of windings
• Tan Delta and capacitance of bushings
• FRA - Frequency Response Analysis
• Return voltage
• Insulation resistance and polarisation index
• Windings resistance
• Magnetic core characterization
• Voltage ratio
• Short-circuit impedance
SERVICES
Tests to assess transformer condition: insulation, windings, core and bushings, as part of predictive maintenance and asset management programmes.
• Expertise on the performance and interpretation of the tests• Long Experience in on-site tests
www.tecnalia.com
Contact Info:
Luis Martínez [email protected]
TECNALIAParque Científico y Tecnológico de BizkaiaC/ Geldo, Edificio 700E-48160 Derio - Bizkaia (Spain) T 902 760 000*T +34 946 430 850 (International calls)www.tecnalia.com
FULLY UPDATED TESTING EQUIPMENT FROM THE MAIN MANUFACTURERS
• DOBLE
• TETTEX
• UNITRONICS
• BAUR
• Other
Wide scope of on-site tests at substations, power and industrial plants on:
• Transformers
• HV & MV Cables
• Generators
• MV Motors
Resistencia de fase a 75 ºC
135
140
145
150
1 3 5 7 9 11 13 15 17 19 21
Posición CTC
Res
iste
ncia
(moh
ms)
0
1
2
3
4
5
disp
ersi
ón (%
)
U W U V W V Dispers.%
Ensayo FRA sobre el arrollamiento de Baja Tensión
-80
-70
-60
-50
-40
-30
-20
-10
2 E+01 2 E+02 2 E+03 2 E+04 2 E+05 2 E+06
Frecuencia (Hz)
Am
plitu
d (d
B)
uwvuwv
TECNALIA is a private applied research and testing centre with the necessary human resources to generate technological knowledge. A combination of technology, tenacity, efficiency, courage and imagination. TECNALIA has over 1.500 expert staff working together towards a common goal: generating business opportunities through applied research.
FRA test on low voltage winding Phase resistance at 75 ° C
Am
plitu
de (d
B)
Frequency (Hz)
Resi
stan
ce (m
ohm
s)
Dis
pers
ion
(%)
ANALYSIS: RECOVERY VOLTAGE
Position CTC