Electrical Measurements and Testing
What are electrical tests for?
Electrical testing is a technical procedure designed to assess the safety, integrity and operation of electrical systems. It is essential because it prevents accidents such as short circuits and fires and ensures compliance with safety regulations.
They allow preventive maintenance, prolonging the useful life of the equipment, optimizing energy performance, and avoiding costly repairs or interruptions.
Electrical Measurements and Testing
Distribution and power transformers
Insulation resistance
It measures the capacity of insulating materials to prevent current leaks in electrical components, ensuring their safety and correct operation.
Transformation Ratio (TTR) Measurement
Test that verifies that the transformer has the correct relationship between the number of turns of the primary and secondary, ensuring that the voltage is transformed properly.
Oil dielectric strength tester
It evaluates the ability of the insulating oil in a transformer to withstand high voltages without breaking down or losing its insulating properties.
Ohmmeter for transformers
Measures the electrical resistance of transformer windings, helping to detect problems such as short circuits or faulty connections.
Soil resistance and resistivity test
It measures the capacity of the ground to safely dissipate electrical currents, ensuring that the grounding system is efficient.
Low contact resistance test
Checks the integrity of electrical contacts by measuring their resistance to ensure that the connections have low energy losses and proper operation.
Power factor to insulation up to 10 KV
Measures losses in high voltage insulation systems, evaluating insulation efficiency in systems up to 10 kV.
Excitation current
Test that measures the current required to magnetize the transformer core, identifying possible faults in the core or windings.
Gas chromatography
Technique that analyzes gases dissolved in transformer oil, helping to detect internal faults before they become serious problems.
Testing switches and secondary circuits
Electrical protections
Systems that detect electrical faults and act to disconnect the affected equipment, protecting electrical systems from serious damage.
Simultaneity of contacts
Test that ensures that the contacts of a switch operate at the same time, guaranteeing the correct disconnection or connection of the circuit.
Primary current injection
Test that introduces a high current into the system to verify the operation of the protection relays and the calibration of the equipment.
Vacuum bottle test
Evaluates the integrity of vacuum switches, checking that they maintain adequate separation without leaks, ensuring their disconnection capacity