Motor Current Signature Analysis Services is the online analysis of current to detect faults in a single or three-phase induction motor drive while it is still operational and in service. The possible defects caused in motor current signature is Broken Rotor Bar, Numerous Broken Bar, Stator Core and Winding Damage, Broken and Damaged Bars and Core Damage due to excessive heating, Abnormal Airgap Eccentricity and certain mechanical problems train characteristics.
Electrical Signature Analysis (ESA) consists of the frequency-domain representation, processing, and analysis of electrical signals and has been usually applied in electric machinery condition monitoring. In general, ESA comprises of an FFT (Fast Fourier Transform) algorithm to represent the time-domain signals in the shape of spectra, which are referred in this work as electrical signatures. ESA is based on the assumption that a significant change in a machine condition results in the change of its electrical signature. Moreover, there are specific frequency components whose magnitudes change in the presence of faults. These frequency components are related to the type and location of fault, being dependent on the power line frequency and structural characteristics of the motor or generator. Thus, it is possible to obtain a set of ESA fault patterns for fault detection and identification in electrical machines.
Bearing damage
Cavitation
Shorted turns in stator windings
Air-gap eccentricity: a non-uniform air gap between the rotor and the stator
Load effects
Equipment wear effects
Broken rotor bars that can cause sparking and overheating
Crest Factor
Current Spectral Analysis
In-Rush/Start-Up
Phase-to-phase Voltage RMS
Total Harmonic Distortion (THD)
% Full Load Amps
High Frequency Eccentricity Analysis
Torque
Phase Current RMS
Phase Impedance
Power Factor
Efficiency
Output Power
Average Current RMS
Line-to-Neutral Voltage RMS
Voltage Imbalance
Impedance Imbalance
Power (KW, KVA, KVAR)
AC/DC Motors
Generators/Alternators
Machine Tool Motors
Transmission & Distribution Transformers
Servo Motors
AC/DC Traction Motors
Control Transformers
(Virtually Any Size)
For Commissioning Testing
For Troubleshooting
For Reliability Testing