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Preventive maintenance for high and medium tension electric substations.
• Tests for power transformers.
• Tests for power interrupt switches.
• Tests for instrument transformers (TP'S & TC'S).
• Tests for lightning rods.
• Cleaning of insulators and connecting testing
• Testing and adjustment of breaker blades.
• Verification of charging and batteries.
• Testing of grounding system.
Corrective maintenance for high and medium tension electric substations.
• Power transformer oil changes.
• Oil change and inspection of low charge taps exchangers.
• Oil filtering, degassing and dehumidification in power and distribution transformers.
• Repair of oil leaks in power and distribution transformers.
• Accessories changes in transformers: rele bucholz, oil and windings thermometers, level indicators, high and low tension nozzles, sampling and filling valves.
• Field drying using high vacuum.
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Thermography
We have the latest technological equipment for providing highly professional, quality work.
MikroScan 7200 Camera
Temperature ranges:
• R1-40°C / 120°C.
• R2 0°C / 500°C.
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Mounting of high and medium power transformers up to 400 kv.
• Accessories installation: Radiators and cooling pumps, heat exchangers, conservation tanks, nozzles, relé bucholz and accessories (fans, thermometers, level indicators).
• Internal inspection to verify taps exchanger, insulation, cleaning, connections torque.
• Residual humidity test.
• High vacuum process.
• Filling process using oil treatment equipment.
• Electrical tests as per manufacturers and users protocols.
• Verification of the correct operation of all accessories.
Verification of Safety and Control Schemes.
• Tests of differential protection relays 87 T.
• Tests of overload protection relays 50/51.
• Tests of voltage relays 47/27.
• Tests of power interrupt control schemes.
• Tests of power transformers alarms, firings and control.
• Startup of power equipment: interruptors and transformers.
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