PPM Corona Probe - Offline Partial Discharge Tester

Product Overview

The Corona Probe is an off-line instrument to accurately pinpoint the source of partial discharge (PD) in a particular slot in generators and motors.

The Iris Power PPM-97 Corona Probe supplements on-line partial discharge measurements by more precisely locating the partial discharge to a particular slot and position, with the motor or generator winding energized by an external high voltage AC source.

This offline test provides a method of testing the quality of bonding between the ground wall insulation layers in the slot sections of new resin-rich and individually VPI’d coils/bars, and the adequacy of slot resin fill in global VPI windings.

On Line/ Off Line Partial Discharge: IRIS TGA

The test enables predictive maintenance of generators resulting in increased reliability and extension of the service life. The technique, developed by IRIS POWER, was introduced over two decades ago and has since been applied to more than 6,000 windings of generators, and is the most popular method in the world to measure partial discharge (PD). The method is non-destructive and is recommended by the generator manufacturers and the industry standards, such a as IEEE Std.1434-2000

ELCID: IRIS ELCID Evolution

Iris Power ELCID Evolution tester operates at only 4% of normal operating Flux, generated by its quickly installed excitation kit. Any imperfections in the core inter/laminar insulation produce fault currents which are detected by a chattock coil and analyzed by the Iris Power ELCID Evolution signal processing unit. Measurement results are digitally stored in the PC for analysis and report generation, and faults can be precisely located in the core. Future results can be compared to past results for trending analysis.

Stator Wedge Tightness: IRIS Stator Wedge Analyzer

The Iris Power SWATM instrument allows to easily and effectively assess the tightness of stator wedges in motors or generators. If the wedges are loose, this may allow stator coils or bars to vibrate in the slot, leading to insulation abrasion and a ground fault. Electronic measurement and storage enables easy and accurate trending of wedge tightness data from test to test.

Stator wedges are traditionally tested for tightness by tapping them with a hammer and listening to the sound produced. This method is slow and prone to inconsistency, the Electronic wedge tightness evaluation is faster, more accurate and provides more consistent results. The Iris Power SWA instrument can be used to test most types of generator and motor stator slot wedges, including those with ripple springs

Power Factor- Tip Up/ Tan- Delta: Double M4100

The M4100 is the industry standard for power apparatus and insulation testing. Its unique combination of test capabilities and artificial intelligence analysis software makes it the power industry’s most trusted Power Factor/Tan-Delta instrument. These instruments are used around the globe thanks to their comprehensive testing options, safety features and measurement accuracy.

Static Tests: Baker D65R

The D65R is specifically designed to diagnose faults in large electrical windings with lower impedance and higher capacitance. With the D65R Digital Winding Tester perform Resistance, HiPot and Surge tests, as well as digitize and store data for future uses.

High Pot: Megger 220072- 70 kV DC

For High Pot Testing above 25 kV, his equipment provides a regulated DC voltage to the coil allowing the leakage current to be instantly sensed for winding protection.

Black Out Test

This assembly functions as a source of high voltage AC regulated. The blackout test lets you visually identify partial discharges in the winding.

Dynamic Tests: Baker Explorer 4000

Baker- SKF’s dynamic motor test and monitoring instruments are built to conduct condition monitoring for motors and generators from a Motor Control Centre (MCC), or through a Baker EP1000 connection unit. The SKF Dynamic Motor Analyzer – EXP4000 is the latest generation of low-voltage, battery-operated instruments that test motors and generators in-service, or while they are in operation. The EXP4000 provides health and performance data on the motor, the motor's load, and incoming power to assess motor performance and suitability in context of the entire machine system it supports.

Power Logger: Fluke 1735

Fluke’s 1735 Three-Phase power data logger is the ideal power meter for conducting energy studies and basic power quality logging. The power quality meter measures most electrical power parameters, harmonics, and captures voltage events.

Ultrasound: EPOCH

Ultrasonic testing uses high frequency sound waves (typically in the range between 0.5 and 15 MHz) to conduct tests and measurements.

Vibration Analysis: Vb6B

Built on the proven track record of the classic vbSeries portable vibration analyzers and balancers, the all-new vbSeries data collectors, analyzers, and balancers have been re-engineered from the ground up to offer leading-edge reliability, accuracy, and usability.

Mechanical Laser Alignment: S-660

This equipment provides highly accurate, simultaneous measurement offset and angle using two 0.5 degree laser fans and two PSDs, offering full angular measuring range over the entire operating range between laser and target.

Magnetic Particles

Magnetic particle testing is one of the most widely utilized NDT methods since it is fast and relatively easy to apply and part surface preparation is not as critical as it is for some other methods. This method uses magnetic fields and small magnetic particles to detect flaws in components.

Thermography camera: TKTI 10

The SKF Thermal Camera TKTI 10 is an extremely user/friendly camera designed especially for use by maintenance technicians to visualize troublesome hotspots quickly and easily.

Borescope: RF SYSTEM VJ

The flexible borescope allows detailed inspection of inaccessible areas in anywhere of the windings.