TESTING INSTRUMENTS FOR CONDITION MONITORING AND DIAGNOSTIC TESTING SERVICES
                                                                                                                            

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 1.0   Automatic Insulation Analyzer : (Capacitance and Tan delta test set) :
         Make : Doble, USA, Type : M 4000

         The test data for respective HT capital equipments are stored for establishing the trend
         periodically, which is very important for any condition monitoring testing.
         1.1   Laptop with latest configuration with all licensed software.
         1.2   User friendly windows Software for operation, data  collection.
         1.3   Measuring range of bridge for Tan d : 0 to 100 %, Resolution 0.001% accuracy + 1% of
                  the reading.
         1.4   Measuring range for capacitance: 1pF to 5mF and Resolution  0.01pF on lowest range
                 and accuracy + 0.25 % of the reading.

         1.5   Calibration unit for validating accuracy at site.

         1.6   Induction cancellation unit for energized switchyard operation.

         1.7   0-12 kV AC, 300 mA.
         1.8   Resonating Inductor with current rating up to 5 Amps. (Satisfies the rating to test up to
                 600 MW machine).

         1.9   Test set with Temperature and Humidity measurement facility.

         1.10 In built charts for Tan delta value correction.

2.0  Tan delta, Dielectric Constant and Resistivity measurement test set with  
        Oil Cell and Oil cell Heater for insulating oils

         2.2    Oil test cell as per BIS standards

         2.3    Heater for Temp, up to 150 °C
 

        3.1    The test Instrument detects Partial Discharges in the high voltage insulation.

        3.2    The Unit of measure is apparent charge pico coulomb (pC)

        3.3    The ndb make XDPIIB test instrument can be used :

                  ·        To check the insulation quality of HT equipment at the time of manufacture.

                  ·        To have the base foot print values before commissioning.

                  ·        To check the discharge values during every maintenance cycle to check the ageing

                        of the insulation.

        3.4    Depending upon the measured values every six or twelve months to trend monitor the

                 insulation.

                 Detailed description of this test can be viewed at :
                 www.powersystemconsultant.com/htm/partialdischarge.htm      

4.0   Sweep Frequency Response Analyzer (SFRA) : For Transformer Core and
         Winding Movement Diagnosis.

         4.1   The best diagnostic instrument for detecting "hidden" transformer defects

         4.2   The M5200 detects mechanical failure or movement of windings due to short
                  circuits, mechanical stresses, or transportation. Used to ensure transformer
                  performance, reduce maintenance cost, reliability and increase the service
                  life of transformers.

         4.3   The M5200 can "see" inside transformers and can detect problems early,
                  before they become costly failures. This test is used ;

• To improve the quality of your regular inspection program

• To eliminate unnecessary detanking and costly internal inspections

• To check new transformers to verify good condition on site

• To inspect for damage if the 'transformer' has experienced mechanical
               stress during transportation or in service

• In case of system problems, like short-circuit faults that can damage
              transformers

• After earthquakes, lightning, or other environmental events

         4.4  The entire set is operated with a software which can be used for analyzing
                 SFRA plots. Detailed description of this test can be viewed at :
                  www.powersystemconsultant.com/htm/SFRA.htm

  5.0  HV / MV Power Cables testing by : Very Low Frequency (VLF) test method

  6.0   Lightning Arrester Test Set : For ON line health check up of Lightning Arresters

           6.1   Lightning arresters are tested online

          6.4   Detailed description of this test can be viewed at :
                   www.powersystemconsultant.com/htm/SCAR-10.htm

 7.0    RSO Test Set : For main rotor winding Earth fault and Inter turn fault detection.

           The testing instrument used is,

           Rotor Reflectometer   

           7.1   This is a world renowned, highly accurate Rotor Reflectometer for Recurrent Surge

                    Oscillograph test.

           7.2   There are several modes in which the Reflectometer can be used.
                   These are,
                    a) Testing of stationary rotor within generator,
                    b) Testing of rotor at speed within generator (unexcited) and
                    c) Testing of rotor when removed from generator

           7.3   Testing set can be used for,
                    a) Fault between winding and rotor body (earth fault).
                    b) Inter turn fault.
                    c) High resistance joint in rotor.
                    d) Inter winding fault.
 

           7.4   Detailed description of this test can be viewed at :
                    www.powersystemconsultant.com/htm/RSO.htm

  8.0   Digital Dual Channel Storage oscilloscope

           Make : Tektronix, USA  with PC communication software.

           This equipment is used in conjunction with RSO test instrument and partial discharge

           measurement for storage, transfer of measured wave form.

  9.0   Motorized digital megger having variable
           DC output ranges from 0-12KV with high accuracy for,
           ·        Insulation Resistance value

           ·        Polarization Index  measurement

           ·        Step Voltage Test

           ·        Dielectric Absorption Test

           ·        Dielectric Discharge Measurement

           ·     The Digital meggers are communicable with software for further analysis.

            This meter is designed on the principle of Kelvins bridge method.

              i.    Works on 230V AC mains