Services

POWERPAC considers after sales care most important for the complete satisfaction of its customers. We have a 12 member team with experienced technicians and graduate engineers to support the service department. Every key person of the department is equipped with a mobile phone for instant communication, even during off-duty hours. The service department is equipped with the following:


  • Megger 5000V
  • Hot stick for live line maintenance
  • Ratio meter for transformer
  • Earth resistance tester
  • Transformer oil dielectric testing set
  • Oil filer machine
  • Boom truck with crane, 18 ton, Hino
  • Set of tools and equipment
  • Handling equipment
  • Light duty transport
  • Testing is an important activity in the manufacture of any equipment. Preliminary tests are carried out on the transformer before it is put into the tank. Final tests are carried out according to IEC 76 on completely assembled transformer. The following tests are required as per BS-171.

    Routing Test:

  • Measurement of voltage ratio & polarity
  • Measurement of vector group
  • Measurement of insulation resistance
  • Measurement of windings resistance (D.C resistance)
  • No load loss test
  • Impedance and Load loss test
  • Separate source voltage withstand test
  • Induced over voltage test
  • Dielectric strength of oil
  • Type Test:

  • Temperature rise test or heat run
  • Impulse voltage test
  • Noise Level test
  • P F I

    Dust and vermin proof sheet steel clad, Floor mounting indoor type power Factor Improvement plant (PFI) with Magnetic Contractor, Capacitor Bank, HRC Fuses of world renowned Brand Manufacturers are manufactured at our factory according to IEC/NEMA standard.

    Power factor is defined as the ratio of active power W to the total apparent power (KVA)
    R.F.= KW/KVA= COSo

    Hence KW= KVA X R.F.= KVA x COS
    The apparent power S (KVA) is given by S = P±j
    S = Apparent power, KVA
    P = Real power, KW
    Q = Reactive power, KVAR

    Disadvantages of Low Power Factor

    An electrical plant or sub-station operating at low power factor has following demerits:

  • Reduced KW capacity, over loading of cables, transformers, lines for same KW load, increased KVA demand for same KW load
  • Reduced voltage level due to increase voltage drop in inductive reactance of line (IXL)
  • Poor efficiency of motor due to reduced voltage
  • Poorer illumination of lamps due to required supply voltage
  • Increased power losses due to higher currents drawn during lower factor
  • Increased cost of power due to high KVA demand
  • Advantages of Low Power Factor

    An electrical plant or sub-station operating at low power factor has following merits:

  • Reduced lagging -current through supply circuit
  • Reduced IVR losses supply line. Improve power factor. Energy saving, and economy
  • Increased voltage at load -end during full load. Reduced voltage fluctuations at load end
  • Improved voltage regulation if capacitor units are properly switched. If not properly switched the voltage rises during low load
  • Reduced KVA demand, hence same transformer distribution circuit having certain rated KVA can deliver higher KW
  • Reduced KVA demand, hence lesser charges to be paid to the electricity board for the same consumption of electrical energy
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