High power testing station dedicated to high current & high voltage electrical equipment
 

3300 MVA power testing station connected to the 420 kV 50 Hz network with several indoor cells and outdoor areas:

• short-circuit tests up to 130 kA – 3 s;
• Making and breaking tests for circuit breakers up to 100 kV – 25 kA using direct method and up to 420 kV – 63 kA using synthetic method;
• synthetic facilities 800 kV / 2x3,6 MJ ;
• internal fault tests and power arc tests.

Three-phase heat run tests up to 50 kA that may be coupled to a 230 m experimental overhead line.

Additional facilities: mechanical tensile tests, 100 m overhead lines for short-circuit tests,  power arcs test facility for insulator strings.

High voltage breaking tests

demonstrate the capacity of a circuit-breaker to interrupt all types of current (fault, inductive loads, capacitive loads).
  All the fundamental sequences: terminal fault, short line fault, phase opposition, capacitive and inductives breaking, busbar transfer,

  Main hall Synthetic Testing Hall
Sizes
(L x W x H)
Indoor Hall
32 m x 21 m x 31 m
Synthetic facilities
100 m x 30 m x 30 m
Testing capacity 3300 MVA
4 test transformers connected to the 400 kV 50 Hz power  grid
Testing voltage from 11,6 to 246 kV
2 capacity banks of 3,6 MJ 
Charge voltage +/- 800 kV
Current injection Weil-Dobke type 
2 and 4 parameters TRV
Power frequency recovery frequency
Circuit-breaker up to 100 kV - 25 kA in direct method
Circuit-breaker up to 420 kV - 63 kA complete pole in synthetic method
Performed tests All the fundamental sequences: terminal fault, short line fault, phase opposition, capacitive and inductives breaking, busbar transfer,
DC current breaking test (ask the lab)

 

Short-circuit tests

demonstrates the ability of a switchgear to support a short-circuit current. 
 

  Indoor Hall Outdoor areas
Sizes
(L x W x H)
32 m x 21 m x 31 m Internal hall  External dall16 m x 100 m
Scope of the overhead line of 100 m with intermediate gantry
Area of power transformer testing
Testing capacity 3300 MVA
4 test transformers connected to the 400 kV 50 Hz grid
Voltage vacuum tests from 11,6 to 246 kV
Up to 130 kA – 3 s Up to 80 kA – 3 s
Performed tests Short time withstand current on switchgears
Short circuit tests on power transformers up to 240 MVA 400 kV or 360 MVA 235 kV
Short circuit on cables, conductors and accessories, security equipment (earthing devices), surge arresters
Direct accuracy tests on measurement transformers

 

Internal fault Power arc

Creation of high-current electric arcs.
 

  Internal default area Insulator string area
Sizes
(L x W x H)
Secured area for internal default tests
Burial area of insulated cable
 
Testing capacity 3300 MVA
4 test transformers connected to the 400 kV 50 Hz power grid
Testing voltage from 11,6 to 45 kV
Up to 80 kA – 3 s Up to 80 kA – 3 s
Performed tests Internal fault on cable terminations or measurement transformers
Fault on insulated cable, buried or not
Internal fault on cable terminations or measurement transformers
Fault area on isolated cable, buried or not

 

Additional facilities

Temperature rise: permanent current tests to demonstrate non-thermal run-off of equipment.
Mechanics: resistance tests to mechanical stress or mechanical endurance of materials

  Heating Mechanical
Sizes
(L x W x H)
15 m x 11 m x 12 m hall 16 m x 9 m x 12 m hall
Testing capacity 13,8 MVA
50 kA in three phase low voltage (single phase or two phase tests possible as well)
5 kA under 2,7 kV max
2 tripods of 8 m 1000 daN force
2 tripods of 4 m 500 daN force
Performed tests Heating on circuit breaker, switchgears, measurement transformers, GIS, busbars…
Scope of 230 m experimental overhead line that can be coupled with temperature measurement, sag, mechanical tensile, etc ...
Static force or alternating traction on measurement transformers, switchgears, circuit breakers, cable terminations, bushings, 

 

Medium voltage test station

Power testing station dedicated to medium voltage electrical equipment

500 MVA power testing station connected to the 225 kV 50 Hz network with several indoor stands and outdoor areas:
three-phased short-circuit tests up to 40 kA;
Making and breaking tests for circuit breakers up to 24 kV – 12.5 kA using direct method;
protection tests for power transformers;
overload and overcurrent tests;
internal fault tests on MV cells and power arc.

Three-phase heat run tests up to 4 kA.

Additional facilities: mechanical endurance on MV equipment, sound-proof room for noise measurements, 1000 m experimental MV overhead line.
 

Medium voltage breaking tests

demonstrate the capacity of a circuit-breaker to interrupt a medium voltage current (fault, inductive loads, capacitive loads).
 

  SEMT A TRV Bench
Sizes
(L x W x H)
4 indoor testing cells
5,5 m x 9,2 m x 5 m
 
Testing capacity 2 x 250 MVA
2 test transformers connected to the 225 kV 50 Hz grid
Testing voltage from 3 to 24 kV
2 capacitiy banks
2 parameters TRV
24 kV RMS / 60 kV peak
50 Hz recovery frequence
Circuit-breaker up to 24 kV – 12,5 kA in three-phase direct method
Performed test All the fundamental sequences: terminal fault, phases opposition, capacitive and inductives breaking.
Break fuse

 

Short-circuit / Internal fault

demonstrates the ability of a switchgear to support a short-circuit current.
 

  SEMT A External area Short range of overhead line
Sizes
(L x W x H)
4 internal cells
5,5 m x 9,2 m x 5 m
3 m x 5 m MV overhead line of 1000 m
Testing capacity 2 test transformers of 250 MVA connected to the 225 kV 50 Hz power grid 
Test voltage from 3 to 24 kV
Test current up to 40 kA
1 test transformer of 250 MVA connected to the  225 kV 50 Hz power grid
Test voltage from 3 to 24 kV
Test current up to 10 kA
Testing voltage from 3 to 24 kV
Performed test Short circuit on transformer and other MV equipment Internal fault on MV equipment Protection against transformers cut
Internal fault and short circuit
Surge arrester
Fault detector testing, …

 

Additional facilities

Temperature rise: permanent current tests to demonstrate non-thermal run-off of equipment.

Mechanics: resistance tests to mechanical stress or mechanical endurance of materials
 

  Heating Mechanical Soundproof room
Sizes
(L x W x H)
5,2 m  x 4,6 m x 5,9 m hall 5,2 m  x 4,6 m x 5,9 m hall 5,2 m x 4,6 m x 5,9 m hall 
Testing capacity 4 kA three-phase or single phase
Room temperature up to 50°C

1400 operations/day (C-O)

Background noise of 18 dB(A)

Performed test Heating on all type of LV/MV
equipment
Mechanical life on HTA cells, powertrain, IP / IK degree  MV transformer noise measurement

 

Virtual tour of our testing facility :