High Voltage Laboratory

Number of Employees in High Voltage Laboratory: 9
Dimensions of Main Test Hall: 20 m length x 14 m width x 12 m height
Dimensions of Secondary Test Hall: 15 m length x 10 m width x 12 m height

Dielectric Testing Facilities

Specialized Facilities & typical tests performed

HV Cable Testing: According to IEC 60502, IEC 60840 and IEC 62067 for cable systems up to 220 kV rated voltage
Instrument Transformers Testing:• According to IEC 61869 up to 220 kV on CTs (for measuring and protection)and VTs.
• Tests on non-conventional transformers
MV Switchgear Testing: According to IEC 62271
Distribution Transformers Testing: According to IEC 60076 for liquid immersed and dry-type transformers
MCCBs Testing: According to IEC 60947
LV Switchgear and Assemblies Testing: According to IEC 61439 and IEC 60947
Ageing and Material Tests: • Test chamber for 5000 h ageing test on composite insulators.
• Test chamber for UV test on silicon rubbers of the composite insulators.
Other Tests Performed on Insulators, Bushings, Cable Terminations:  Partial Discharge, mechanical tests, long-term ageing, all standard insulator tests, all standard cable qualification tests, all standard bushing and termination tests
Corona & RIV Testing Insulator assemblies, line hardware and station equipment for up to 500 kV AC
Safety Equipment Testing Services: Portable equipment for earthing and short-circuiting, voltage detectors, insulating earthing rods, blankets, mats, shoes

High Power Laboratory

Total Number of Employees in HP Laboratory: 7
Dimensions of Main Test Hall: 15 x 9 x 15 m (MV & LV Test Bays)
Dimensions of Secondary Test Hall: 6 x 7 x 8 m (Internal Arc)
Kind of Power Source for the HP Laboratory: 220/3÷38 kV Short-circuit Three-phase Transformer

Specifications of Main Test Bay

Possible Power Frequency: 50 Hz
Max MVA: 300, 3-ph
Max kV: 38.5
Max kA & Duration: 31.5 kA 3-ph, 1 s (MV), 130 kA 3-ph, 1 s (LV)

Electrical Tests

Low Voltage Tests: Short-time and peak withstand current tests; breaking capacity, internal arcing
Medium Voltage Tests: Making and breaking: inductive current, capacitive current, transfer current; short-circuit making capacity; internal arc /Short-time withstand current tests; ability to withstand short-circuits
Other Types of High Power Tests Offered: Test bay for Internal Arc Tests
High Current Test Facilities & Capabilities 200 kA 1-ph, 130 kA 3-ph below 1.000 V

Mobile Laboratory for HV Cable Testing

Total Number of Employees for On-site Tests: 7
Type of Source: Variable Frequency Resonant Test Unit
Ratings: 260 kV, 80 A, 20-300 Hz
Tests: Voltage Withstand Test, Partial Discharge, Tan Delta, DC Sheath test Measurement of resistance, capacitance and line impedance

Low Voltage & Climate Laboratory

Total Number of Employees in LV & Climate Laboratory: 6
Dimension of Main Test Hall: 12 m length x 5 m width x 15 m height
Dimension of Secondary Test Hall: 15 m length x 6 m width x 10 m height
Temperature-rise Tests: up to 12.000 A 3-ph
Large Climatic Chamber: 5,5 x 4 x 4 m; -20 to 70ºC
Walk-in Large Climatic Chamber: 4,2 x 3 x 2,6 m; -45 to 85ºC
Small Climatic Chambers: 1 x 1 x 1,5 m; -40 to 140ºC

Other Test Capabilities

Tests of Enclosures: IP & IK testing
Mechanical Tests: Tensile, compression, bending, mechanical operation
Environmental Tests: According to IEC 60068
Acoustic Measurement: Sound level for power transformers
Additional special facilities: EMC & Telecom Tests, Smart Meters Tests & Protocols Certification
Power Electronics: Inverters & Converters
On-site Diagnosis of Rotating Machines
Predictive Maintenance of Power Transformers