End-to-end engineering
for energy systems.
A specialist technical team for every critical process, from the PLANning phase to TEST and commissioning, from operation to maintenance.
Main services
The full life cycle of an energy facility.
We cover project management, installation, commissioning, operation, maintenance and core testing disciplines in an integrated scope.
RES and GES Project Management and Consulting
Feasibility, permitting, design, tendering and site management for licensed and unlicensed wind and solar power plants.
HV Electrical Installations Engineering, Installation, Testing and Commissioning
Primary-secondary design, installation supervision, testing and commissioning for substations and collector systems.
HV Electrical Installations Operation Responsibility and Maintenance
Operation responsibility, preventive-predictive maintenance, fault analysis and improvement for high-voltage installations.
Transformer and Distribution Substation Maintenance
Primary-secondary equipment maintenance, function checks and condition reporting for transformer and distribution substations.
Primary Tests
Field tests and technical reporting for current-voltage transformers, power transformers, circuit breakers and earthing systems.
Secondary Tests and Relay Tests
Function and injection tests for protection relays, metering circuits, interlocks, signals and the trip chain.
Thermal Camera Measurement and Predictive Maintenance
Hot spot detection, critical connection analysis and photographic thermal reporting on energized facilities.
SELVaz Earthing Measurements
Earthing impedance, step-touch voltage measurement and reporting for substations and power plants.
Specialist services
Equipment- and function-based technical services.
Testing, fault analysis and maintenance pages for breakers, disconnectors, transformers, protection relays, meters, substations, wind and solar plants.
Circuit Breaker Opening and Closing Time Measurement
Measurement of opening-closing times, inter-pole simultaneity, coil current, and operating sequences on HV and MV circuit breakers.
Circuit Breaker Contact Resistance Test
High-current micro-ohm measurement on breaker main contacts, phase comparison, and evaluation of connection-related overheating risk.
Circuit Breaker DC Insulation Test
Verification of phase-to-earth and open contact insulation on breakers through DC insulation resistance and, where applicable, DC withstand testing.
Circuit Breaker AC Insulation Test
Verification of insulation withstand between phase-to-earth, phase-to-phase, and open contacts on MV and HV breakers using an appropriate AC test voltage.
Circuit Breaker Fault and Maintenance Services
Detection of mechanical, electrical, and control circuit faults on MV and HV breakers; planned maintenance, repair, and function tests.
Disconnector Contact Resistance Test
High-current micro-ohm measurement of main and hinged contacts on HV disconnectors, phase comparison, and hot-spot risk analysis.
Disconnector Insulation Test
Insulation resistance and appropriate AC/DC withstand checks for phase-to-earth, phase-to-phase, and open contact distance on disconnectors.
Disconnector Fault and Maintenance Services
Detection of drive, contact, hinge, interlock, and insulator faults on HV disconnectors; mechanical-electrical maintenance and function verification.
Transformer Turns Ratio Test
TTR measurement on all taps and phases of power and distribution transformers, plus vector group, polarity, and tap changer checks.
Transformer Winding Resistance Test
DC winding resistance measurement on power transformers, temperature correction, phase-tap comparison, and OLTC contact analysis.
Transformer DC Insulation Test
Assessment of insulation condition on power transformers through insulation resistance, polarization index, and, where applicable, DC leakage current testing.
Transformer AC Insulation Test
Verification of main and inter-winding insulation on transformers through applied and induced AC voltage tests under appropriate field conditions.
Transformer Fault and Maintenance Services
Fault analysis, planned maintenance, oil and electrical tests, OLTC-bushing checks, and return-to-service verification on power and distribution transformers.
Distance Protection Relay Test
Distance relay zone, direction, time, load blindness, power swing, and trip chain tests on transmission and distribution lines.
Differential Protection Relay Test
Operating-restraining curve, phase compensation, harmonic blocking, and trip tests on transformer, generator, and line differential relays.
Busbar Protection Relay Test
Zone selection, check-zone, disconnector replica, CT supervision, breaker failure, and trip matrix tests on busbar differential protection.
Overcurrent Protection Relay Test
Threshold, curve, direction, instantaneous trip, time delay, and trip chain secondary injection tests on phase and earth overcurrent relays.
Relay Fault and Maintenance Services
Analysis of incorrect tripping, failure to trip, communication, and hardware faults on protection relays; settings, circuit, and function verification.
Electricity Meter Tests
Accuracy class, load points, phase angle, pulse constant, time, and measurement circuit tests on active-reactive energy meters.
Meter Fault and Maintenance Services
Detection and verification of measurement deviation, display, communication, pulse, time, and CT/VT circuit faults on energy meters.
Substation Installation Works
Installation and quality control of primary-secondary equipment, cable, grounding, panels, and auxiliary systems in 1–380 kV substations.
Substation Fault and Maintenance Services
Analysis of primary, secondary, DC system, cable, and auxiliary plant faults in substations; planned and corrective maintenance.
RES Fault and Maintenance Services
Turbine HV system, MV collector network, substation, protection, and SCADA fault-maintenance services in wind power plants.
GES Fault and Maintenance Services
Panel-array, inverter, DC/AC cable, transformer, cell, protection, and SCADA fault-maintenance services in solar power plants.