SERVICES AND LABS
HIGH VOLTAGE TESTING
The screened High Voltage testing hall, 40 m x 25 m x 25 m (h) m, is the main room of the HV Laboratory. It is equipped with a power frequency generator up to 1 MV (50 Hz / 60 Hz), and a impulses voltage generator up to 2.8 MV for lightning impulses waveform and 1.8 MV for switching impulses.
The screened Medium Voltage hall, 29 m x 13 m x 12 m (h) is the secondary test hall. It is divided into five testing cells, to perform power frequency tests up to 150 kV, lightning impulse tests up to 400 kV, temperature-rise test, ratio and phase measurements on current transformers, high sensitivity partial discharges measurements (Faraday Cage), and other performance tests on distribution and medium power transformers and prefabricated substations including short-circuit impedance, load and no-load losses, temperature rise test, windings resistance measurement, induced overvoltage test, and measurement of noise level.
| MAXIMUN VOLTAGE OR CURRENT | STANDARDS | |
|---|---|---|
| IMPULSE TESTING | ||
| Lightning Impulse | 2000 kV 1.2/50 us | IEC, ANSI, CENELEC |
| Switching Impulse (Dry & Wet) | 1600 kV 250/2500 us | IEC, ANSI, CENELEC |
| AC TESTING | ||
| Dry tests | 850 kV, 50-60 Hz | IEC, ANSI, CENELEC |
| Wet tests | 800 kV, 50-60 Hz | IEC, ANSI, CENELEC |
| Induced tests | 700 kV 100-200 Hz | IEC, ANSI, CENELEC |
| AC Current | 8000 A 50-60 Hz | IEC, ANSI, CENELEC |
| DC TESTING | ||
| Dry & Wet | 800 kV 20 mA | IEC, ANSI, CENELEC |
| DC Current | 5000 A, DC | IEC, ANSI, CENELEC |
| OTHER TEST | ||
| Partial Discharge Measurement | 700 kV | IEC, ANSI |
| RIV Measurement | 400 kV | CISPR18, NEMA |
| Capacitance & Tan & measurement | 200 kV, 50-60 Hz | IEC, ANSI |
| Pollution Testing | 240 kV | |
| Temperature-rise tests | 8000 A 50-60 Hz | |
| CLIMATIC TESTING | STANDARD | RANGE OF TEMPERATURE |
|---|---|---|
| Icing, Environmental Tests | IEC | -40 °C up to +60 °C, up to 95 % HR |
HIGH POWER TESTING
By means of an agreement with HPL (laboratory of Ormazabal group, located in Boroa, Bilbao), combining personnel, expertise and measurement systems of LCOE with the HPL facilities.
| TEST | RATINGS |
|---|---|
| MEDIUM VOLTAGE TESTS (up to 36 kV AC) | |
| Short time and peak withstand current | 40 kA / 3 s (50-60 Hz) |
| Short-circuit making and breaking tests | 16 kA/40.5 kV; 20 kA/36 kV; 31.5 kA/24 kV; 40 kA/12 kV (50-60 Hz) |
| Making and breaking of active loads | up to 2000 A /40,5 kV (50-60 Hz) |
| Making and breaking of capacitive loads | up to 100 A /40,5 kV (50-60 Hz) |
| Internal arc tests | 40 kA for 1 s (50-60 Hz) |
| Transformers short circuit | up to 20 MVA /36 kV (50-60 Hz) |
| LOW VOLTAGE TESTS (up to 700 V AC) | |
| Short time and peak withstand current | lth 100 kA for 1 s/ ldyn 250 kA (50-60 Hz) |
| Internal arc tests | 80 kA for 1 s (50-60 Hz) |
- Instrument transformers
- Switchgear (MV and LV)
- Power transformers
- Cables and accessories
- R&D+i applications
- Short time and peak withstand current tests
- Short circuit tests
- Switching tests
- Power arc tests
HIGH CURRENT IMPULSES TESTS
The high current impulse tests are performed in a separate, specific chamber from the general high voltage tests. This chamber was designed by LCOE as an internal R&D project in order to meet the demand on Aircraft Lightning Direct Effect tests. Since the beginning, the high current laboratory has continued evolving by diversifying its test catalogue. These test catalogue ratings are summarized in the table below.
| WAVEFORMS | RATINGS |
|---|---|
| AIRCRAFTS | |
| High Current Testing | All waveforms and zones defined by the standard |
| High Voltage Testing | Waveforms A and B up to 2000 kV Waveform D up to 1600 kV |
| HIGH VOLTAGE SURGE ARRESTERS | |
| Distribution | Up to Heavy Duty Distribution Qrs ≥ 0.4 pC |
| Substation | Up to Substation Low. Qrs ≥ 1 C. Wth≥ 4 kJ/kV |
| LIGHTNING PROTECTION SYSTEM COMPONENTS | |
| Waveform 10/350 µs | Up to 200 kA |
