Services

IES offers a holistic brand of service that ensures comprehensive diagnosis and complete solutions tailor-fitted to customer's specific need.

Preparation of electrical design for new and/or upgrading of electrical installation of high-rise residential and commercial buildings, substation equipment and facilities, protection and control panel layout and wiring diagrams

Consultancy services related to power system study, automation and integration, and medium and low voltage systems

Preparation of power system study and analysis using ETAP electrical power system design and analysis software for equipment evaluation, cable sizing & ampacity, load flow, voltage drop, panel studies & single phase systems, short circuit analysis, protective device coordination and sequence of operation

Automation of integrated substation equipment and devices including supervisory control and data acquisition (SCADA), data logging of meter reading, breakers and disconnect switch status, controls of breakers and disconnects, controls of on-load tap changers (OLTC) and monitoring of transformer installed devices and substation events

New SCADA System Master Station

Integration of substation devices such us protection & control relays, meters, circuit breaker controls, motorized disconnect controls and transformer monitors & controls

Installation and commissioning of pre-wired protection and control panels, meter panels, SCADA panels and other online substation monitoring devices

Standard commissioning and preventive maintenance testing of high, medium and low voltage generation, transmission and distribution substation and line equipment, the details of which are as follows:

Power Transformer Testing

  1. Turns Radio Test
  2. Polarity Test
  3. Insulation Resistance Test
  4. Insulation Power Factor Test
  5. Winding Resistance Measurement
  6. Exciting Current Measurement
  7. Ground Resistance Test
  8. Tap Charger Check
  9. Oil Test/ Dissolved Gas Analysis

Power Circuit Breaker Testing

  1. Timing Test
  2. Contact Resistance Test
  3. Ground Resistance Test
  4. Insulation Resistance Test
  5. Insulation Power Factor Test
  6. DC High Potential Test

Current Transformer Testing

  1. Ratio, Burden and Polarity Test
  2. Phase and Magnitude Error Test
  3. Excitation/Saturation Test
  4. Insulation Resistance Test
  5. CT Circuit Continuity Test

Potential Transformer Testing

  1. Ratio and Polarity Test
  2. Phase and Magnitude Error Test
  3. Secondary Burden Test
  4. Insulation Resistance Test
  5. Excitation Test

Other Tests

  1. Recloser Testing
  2. Power Factor of Insulting Liquid and Permittivity Testing
  3. Primary Current Injection of up to 2,000 Amperes

These are special tests for high voltage power transformers, bushings, current and potential transformers. They are advanced tests considered as the "CT scan and MRI" in high voltage testing.

1. Sweep Frequency Response Analysis (SFRA)

Injection of a sinusoidal excitation voltage with a continuously increasing frequency into one end of the transformer winding and measurement of the signal returning from the other end. The comparison of input and output signals generates a unique frequency response which can be compared to a reference data. Deviations indicate geometrical and/or electrical changes within the transformer. No additional data processing is required due to a direct measurement in the frequency domain.

2. Dielectric Response Analysis (DIRANA)

Determination of the dielectric properties of insulation materials within a wide frequency band by analyzing the moisture content particularly in oil-paper-insulated power transformers, based on dissipation factor and capacitance.

Functional and Accuracy Testing of Generator Relays

  1. Installation, upgrade and commissioning of protection systems
  2. Automation and integration of high voltage substation and distribution line equipment
  3. Impedance testing of transmission lines
  4. Electrical audit and power quality assessment of power systems
  5. Thermographic scanning and analysis of power systems
  6. Ultrasonic detection and analysis
  7. On-line condition-based monitoring of substation equipment
  8. Power system study (short circuit analysis, coordination study, etc.)

Field Services

  • Electrical Troubleshooting and Repair
  • Preventive Maintenance
  • Maintenance Testing
    • High/medium/low voltage circuit breakers
    • Instrument Transformer
    • Meters and transducers tests and calibration
    • Protective relays tests and calibation
    • Switchgears and switchboards
    • Panelboards and motor control centers
    • Disconnect switches
    • Automatic transfer switches
    • Surge arresters
    • Power Cables
    • Communiciation
    • Capacitors and reactors
    • Generators and motors
  • Ground Resistance Testing
  • Time Travel Tests and Analysis
  • Harmonic and Power Quality Measurements
  • Voltage/Load Recording
  • Line Impedance Testing

Engineering

  • Protection System Upgrade
  • Pre-wired Panels
  • Retrofitting
  • Power Quality Analysis
  • Grounding Audit

Startup

  • Acceptance Testing
  • Performance Baseline

Predictive Maintenance

  • Dissolved Gas Analysis
  • Thermographic Scanning
  • Ultrasonic Detection