Lyviksvagen 8
Ludvika, SE - 771 31
Sweden
Overview
Mailing Address:
P.O. Box 707, SE – 771 80 Ludvika, SWEDEN
Key Contact Personnel:
Pablo Rey, General Manager pablo.rey@stri.se
Ronnie Branér, Assistant Marketing Mgrronnie.braner@stri.se
Year Founded HV Lab: 1991
Total Number of Employees: 22
Major Export Markets Served: Europe
Services
High Voltage Laboratory
Number of Employees – High Voltage Laboratory: 20
Dimension of Main Test Hall:
37 m length x 25 m width x 30 m height
Dimension of Second Test Hall:
35 m length x 18 m width x 21 m height
Dimension of Third Test Hall:
19 m length x 18 m width x 21 m height
Dimension of Fourth Test Hall:
13 m length x 10 m width x 12 m height
Dimension of Fifth Test Hall:
10 m length x 10 m width x 5 m height
Dielectric Testing Facilities
| Max. Volt./Current | Standard/Remarks | |
| Lightning Impulse | 2800 kV | |
| Switching Imp. (Dry) | 1850 kV | |
| Switching Imp. (Wet) | 1850 kV | |
| A.C. Testing: | ||
| Dry | 1200 kV/1 A | 50 Hz single phase |
| 600 kV/4.0 A | 50 Hz single phase | |
| 550 kV/3.0 A | 50 Hz single phase | |
| 430 kV/2.0 A | 50 Hz 3-phase | |
| Wet | As dry test except 600 kV/4 A | |
| D.C. Testing: | ||
| Dry & wet | 1250 kV/0.3 A/2 A | continuous current/ pulses |
Partial Discharge & RIV Testing:
Same voltage as for AC-dry test
Capacitance & Tan ∂ Testing:
Same voltage as for AC-dry test
Pollution and Environmental Testing
Dim. of Main Test Chamber (length x width x height):
• Ø 18 m x 23 m
• 3 m x 3 m x 5 m
| Standard | Max.A.C. Volt. | Max.D.C. Volt. | Temp from– to °C | |
| Salt Fog | IEC 60507, 61245 | 860 kV | ±1200 kV | / |
| Clean Fog | IEC 60507, 61245 | 860 kV | ±1200 kV | Max. 55°C |
| Environmental | IEC 60068 | 180 kV | ±260 kV | -60°C to +70°C |
| Icing Tests | IEC 62271-102 | 860 kV | ±1200 kV | -15°C to 0°C |
Ageing Tests
• 5000 h test at multiple stresses acc. to IEC TR 62370,2000 h terna cycle
• 2 chambers each 10 m3
• 1000 h salt fog test according to IEC 62217, two with dimensions 2.1 m x 2.1 m x 2.2 m, one 3 m x 3 m x 5 m, and one 2.0 m x 1.2 m x 2.6 m
Other Testing Facilities
HV Cable Testing
| Max. Volt./Current | |
| Load Cycling | DC current 2000 A ±5 V on potential up to 1200 kV |
| AC current 3000 A | |
| AC Voltage | 1200 kV/1 A, 650 kV/5,5 A |
| DC Voltage | ±1200 kV |
| Lightning Impulse | 2.80 MV |
| Switching Impulse | 1.85 MV |
Test Loop Length Limited only by required supply current
PQ testing on cables:
• DC ±1050 kV, AC 650 kV
• Bending test on cables up to 3 m bending radius
UHVDC Test:
Outdoor UHVDC test system for long term test of equipment up to 1050 kV.
Temperature Rise Tests:
On bushings, instrument transformers, disconnectors, circuit breakers, etc., up to 9000 A AC, 8400 A DC
Other Test Capabilities
High Power Tests:
In collaboration with other laboratory partners
Mechanical Tests:
Maximum tensile load 420 kN. Higher tensile load, compression tests, torsional tests and thermal-mechanical tests up to 500 kN at 1.8 m length in collaboration with other laboratory partners.
Material Test:
Non-electrical tests for cables
Additional Special Facilities:
• Instruments for RIV tests up to 2.7 GHz.
• Probes for AC and DC E-field measurements controlled by an insulated robot.
• Cameras with UV sensitive lenses for detection of corona activities.
• A remote-controlled UV-sensitive video system (Ofil DayCor II) for detection of small partial discharges.
• IR-camera (FLIR SC640) for measurement of temperature profiles and hot spots.
• Test for switching of bus-charging currents on disconnectors and breakers for gas-insulated metal-enclosed switchgear (TD1, TD2 and TD3) up to 1100 kV.
