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Services Offerd

  1. Testing and Commissioning of Sub-station Equipment

    We conduct exhaustive Preventive Maintenance Inspection on various equipment used in power generation, transmission and distribution using sophisticated and specialiased instruments. Our teams of well-trained engineers carry out tests and conclude the results in the form of excellent reports that lead to actions to be taken be the power utilities to increase the life of such equipment by timely maintenance and avoid breakdowns. This results in huge direct and indirect savings in terms of equipment replacement and power outage costs.

    For Testing services covering a large number of sub-stations, over a long period, ISSPL offers an innovative service pioneered by SCOPE’s SCHELOG software. This is SCOPE’s own web-based software that is directly accessible from the field for data entry and available to ISSPL for report generation and analysis.

    • Services offered for testing CIRCUIT BREAKERS.
      • Test the HV/EHV class Circuit Breakers of various makes like ABB, BHEL, CGL, ALSTOM, SIEMENS, NGEF Etc. for following tests:
        • Circuit Breaker Operation times, like C, O, C-O, O-C-O…
        • Travel Characteristics of breaker contact / mechanism
        • Trip & Close Coil Current characteristics
        • Static Contact Resistance
        • Dynamic Contact Resistance (DCRM)
        • Tan Delta of Grading Capacitors and
        • Dew Point Measurement of SF6.
      • Testing a particular breaker at any location using our equipment for above parameters.
      • Testing a group of circuit breakers in a substation using the customer’s equipment.
      • Test data is handed over to the customer in the form of a hard copy – wherever the customer has access to a computer, we provide help to record the data in its soft format through SCOPE’s “CPLOT” software.

    • Services offered for testing TRANSFORMER, CT, PT, CVT etc.
      • Test the HV/EHV class of Transformers of various makes like ABB, BHEL, CGL, ALSTOM etc. for their
        • IR value with Polarization Index (PI) & Absorption Index (AI),
        • Capacitance & Tan Delta of windings as well as bushings,
        • Winding Resistance Measurement,
        • Magnetic balance test,
        • Magnetizing Current test,
        • Vector group confirmation test,
        • Frequency Response Analysis (FRA),
      • Test the HV/EHV class of Current Transformers (CT) of various makes for their
        • IR value with PI & AI,
        • C & Tan Delta,
        • DC Resistance measurement,
        • Primary Injection Test,
        • Polarity test & Meg Curve test.
      • Test the HV/EHV class of Potential Transformers (PT) & CVT of various makes for their
        • IR value with Polarization Index (PI) & Absorption Index (AI),
        • C & Tan Delta,
        • DC Resistance measurement &
        • Primary Injection Test.
      • Test the HV/EHV class of Surge Arrestors of various makes for their
        • IR value with Polarization Index (PI) & Absorption Index (AI),
        • C & Tan Delta,
        • Leakage Current monitoring

  2. Services offered for testing PROTECTION RELAYS.
    • Testing of Various makes of relays with help of Single Phase & Three Phase Automated Relay Test Kits.
    • Distance protection Relays - Numerical or Non numerical, Line differential Relays, Back up Protection relays, REF Protection relays, Static relays, Voltage Frequency & Current Relays & Old Electromechanical Relays can be tested as per the characteristics of the manufacturers.We have large data bank of the characteristics of various relays like MICROMHO, YTG, RAZFE, LZ 96, OPTOMHO, and THR etc.

  3. Services offered for RLA & RLE study of Switchyard Equipments
      4. We undertake RLA (Residual Life Assessment) and RLE (Residual Life Extension) studies for entire sub-stations. We carry out testing of Various types & makes of test objects such as Transformers, Circuit Breakers, Isolators, CT/CVT etc using state of the art test and measuring instruments. The data is uploaded in a proprietary web-based software of SCOPE called SCHELOG for further analysis. We create a detailed analysis report and submit our recommendations to repair/replace parts or equipment. Actions taken on our recommendations lead to a drastic reduction of equipment break-downs an increase in the availability of sub-station equipment.

  4. Services offered for Infra-red Scanning of Switchyard Equipments
      5. This service is offered to identify hot spots in Joints of Transformers, Circuit Breakers, Isolators & Bus-bars by using Infra-Red Thermography. This is a reliable and proven method of locating hot spots in the substation that could lead to future failures due to over heating. All such tests are conducted in live switchyards without taking shutdown of these critical equipments thus resulting into substantial saving in downtime cost.

  5. Automation of substations: Erecting; Commissioning & Testing RTU; Bay Controllers & Data Concentrators
      6. Renovation and modernization is a necessity for improving the performance of power transmission and distribution. ISSPL has acquired the knowledge and expertise to modernize sub-stations using automation in association with ABB, Siemens and Allen Bradley, amongst others.

  6. Training / retraining to existing customers on a contractual basis
      7. ISSPL conducts specialized Custom built Training Programs on chargeable basis such as -
      • On the job Training for testing Circuit Breakers, Dynamic Contact Resistance Measurement of Circuit Breaker; Transformers; CTs; PTs; CVTs; LA’s & Relays.
      • Training for interpreting tests results.
      • Preventive Maintenance actions based on test results.
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