ENEL

LABORATORY FOR ELECTRICAL TESTING

The Laboratory within the Company is part of the Testing Division. Based on the Company's basic documents, the Laboratory provides independence in contracting and conducting surveys.

The work of the Laboratory is organized in accordance with the requirements of SRPS ISO/IEC 17025 standard.

Since 2017, the Laboratory is accredited by the Accreditation Body of Serbia for 20 test methods in the field of electrotechnical testing, the number of Accreditation Certificate 01-459.

The expert team made up of engineers and technicians performs the following testings in the field of electrical engineering:
   • testing and control during the execution of assembly works,
   • Final control and testing prior to commissioning of equipment and installations,
   • regular annual, legally binding, testing on equipment, plants and facilities.

TEST METHODS

The test methods applied in the Laboratory are determined by international standards and national regulations applied in the Republic of Serbia.

Low voltage electrical installations

Testing the continuity of the protective conductor and conductor of main and additional equipotential bonding by measuring electrical resistance for low voltage electrical installations

Testing of the insulation resistance of the electrical installation

Fault Loop impedance testing

Testing of the Residual Current Devices (RCD)

Earth resistance test

Testing of of the additional equipotential bonding in low-voltage electrical installations

Ground loop resistance testing with earth clamp tester

     

Electric power plants with a nominal voltage greater than 1000 V

The Impedance system testing by the method of measuring the current and voltage

Testing of galvanic connection of equipment and metal masses

Visual inspection of materials and cross-sections and joints in the grounding system

Contact voltage and step voltage testing by the method of measuring the current and voltage

Testing of the specific resistance of the soil (soil resistivity)

     

Lightning protection installations

Testing of the continuity of the receiving system, the system of the conductive conductors and the grounding system of lightning installations

Earth resistance test

Testing the continuity of conductor of main and additional equipotential bonding

Testing of the specific resistance of the soil (soil resistivity)

     

Working conditions - lighting and electrical lighting installations

Testing of the lighting in the workspace

Testing of the lighting in the outer workspace

     

Bus-bars

Dielectric Voltage Withstand Test with AC test voltage

Testing of bus-bars resistance

     

Scope of acreditation

     

Electric power cables and cable accessories

The Dielectric Voltage Withstand Test with DC test voltage

The Dielectric Voltage Withstand Test with AC test voltage

The Dielectric Voltage Withstand Test with VLF test voltage

Tan delta (tgδ) testing with VLF test voltage

Cable continuity testing

Testing the insulation resistance of the cable jacket

Cable jacket continuity testing

     

Heating cables

Insulation resistance testing of heating cables

Heating cable continuity testing

     

Circuit breakers

Insulation resistance testing

Contact resistance testing

     

Electric motors

Insulation resistance testing

Dielectric Voltage Withstand Test with VLF test voltage

Tan delta (tgδ) test with VLF test voltage

     

Transformers

Insulation resistance testing

Dielectric Voltage Withstand Test with VLF test voltage

Tan delta (tgδ) test with VLF test voltage

     

Certificate