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  • Users: tayyab1020
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  1. tayyab1020

    Can I parallel YNyn0(d11) with YNyn0(d1)

    I want to parallel two tranfrormers. Both 132/33KV YNyn0, 75MVA but their tertiary windings are different d11 and d1 respectively. Can somebody tell me if it is possible to parallel these. In my opinion since the power windings are having the same vector group, it must possible to connect these...
  2. tayyab1020

    Which is a better option insulation class F Temp rise B or H/F

    Recently we are working on procurement of new Gas Turbine driven generator. One of the vendor has quoted insulation class H and temperature rise B while others have quoted F/B. We are currently using machines with F/B and donot have any prior experience of H/F. Please let me know if there are...
  3. tayyab1020

    API standard for driven load V/S capacity of motor

    I need to select a motor for pump of absorbed power 145KW. Can somebody tell me what is the API standard for selecting the motor capacity. Is it 10% or 15% or 20% higher than the absorbed power.
  4. tayyab1020

    Motor Rated Circuit Breaker for 160KW motor required

    I want to refurbish my motor feeder for 160 KW motor. Due to space limitation in the feeder, I want to use some smart type motor rated circiut breaker or motor starter. Can somebody tell me where can I find it for such a large motor.
  5. tayyab1020

    What is the benefit of using a duplexer with repeater for radio comm

    I Want to install a repeater station for communication with walkie talkies at my plantsite. The coverage area is 50km in radius. Can somebody tell me what is the top of the line repeater station available in the market. Please also let me know what are the benefits of using a duplexer with...
  6. tayyab1020

    Rating of Circuit Breaker for motor Protection

    I want to replace fuses of my Motor Control Centre with motor rated Circuit Breakers. The current rating of installed fuses is 2.5 to 3 times the rating of the motor. What rating of the motor rated circuit breakers should I use, either equivalent to the rating of the motor or maintain the same...

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