Devi power tech Services

Testing and calibration

Testing of Protection Relays

  • Numerical Relays
  • Electro Mechanical Relays
  • Static Relays
  • IDMT OCR/EFR
  • Differential Relays
  • Transformer Protection Relays
  • Motor Protection Relays

Calibration of Electrical & Process Measuring Instruments.

  • Analog/Digital Voltmeter
  • Analog/Digital Ammeter
  • Analog/Digital Frequency meter
  • PF Meter, KV meter, KVR, MVA, KW meters
  • Transducers
  • Welding machines
  • Phase sequence meter

Calibration of Mechanical and Measuring Instruments

  • Pressure Guage
  • Pressure Switch
  • Pressure Transmitter
  • Digital Temperature Indicator
  • Temperature Switch
  • Temperature Guage
  • Temperature Sensor
  • Dead Weight Tester

Calibration of Single Phase & 3 Phase Energy Meters.

  • Calibration of the 3 phase energy meter, injecting three phase current & voltages, using phantom load set.
  • Variation of phase angles using 3 phase phase-shifter.
  • Calculation of errors in comparison with calibrated precision standard meter.

Transformer Testing Online and Offline Testing

Tests on Solid Insulation

  • Insulation Resistance (IR)
  • Polarization Index (PI)
  • DCAbsorption Test
  • Capacitance & Tan Delta
  • Leakage Current Test

Tests on Winding & OLTC

  • DC Winding Resistance Resistance Test
  • Neutral Floating Point Test
  • Tests on Bushings
  • Capacitance & Tan Delta

Tests on Core

  • HV Excitation Current
  • TestRatio & Polarity Test
  • Magnetic Balance Test
  • Sweep Frequency Response Analysis (SFRA)

Online Testing:

  • Thermography.
  • Harmonic Analysis.
  • Partial Discharge.
  • Vibration Analysis.
  • Noise Level

We Provide

Condition Monitoring Tests on Generators & motors

Offline testing:

  • Insulation Resistance (IR) Test.

  • Polarization Index (PI).

  • DC Absorption Test.

  • Capacitance & Tan Delta Test.

  • Leakage Current Test.

  • DC Resistance Test.

  • Impedence Measurement

  • Surge Oscilloscope

Online testing:

  • Thermography.

  • Harmonic Analysis.

  • Partial Discharge.

  • Vibration Analysis.

  • Current Signature Analysis.

We Provide

Transformer Oil & Filtration

  • Break Down Voltage (BDV).

  • Moisture Content.

  • Interfacial Tension (IFT).

  • Neutralization Number (Acidity).

  • Dielectric Dissipation Factor (Tan Delta).

  • Resistivity (Specific Resistance).

  • Flash Point.

  • Sludge & Sediments.

  • Dissolved Gas Analysis (DGA).

  • Furan Analysis.

  • Kinematic Viscosity.

  • Pour point.

  • Density.

  • PCB.

We Provide

Solar panel & High mast Installation

  • Suppling Octagonal High Mast Pole

  • LED Floodlight & Sodium Lights

  • All Types of Electrical Lights

  • Installation & Maintenance of High Mast

  • Installation of Solar Light

  • Supplying of Batteries & Solar Panels