CERDA

call-answer +33 4 72 683434 noun_18959 +33 4 72 683541 Visit website

21, Rue Cyprian
Villeurbanne, 69100
France

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Overview

Key Contact Personnel:
Georges Gaudart, Head of CERDA
Telephone: (33) 4 72 68 35 41
Year Founded:
HV Lab: 1937
HP Lab: 1929
Total Number of Employees: 50

Services

All tests are performed according to IEC, IEEE, EN, VDE, GOST, FURNAS, GB, DL and other standards or customer specifications.

High Voltage Laboratory

Testing room: D x W x H = 36 x 21 x 25 m
Testing area: D x W x H = 20 x 12 x 18 m

Testing Portfolio
• A.C. power frequency tests
• Switching impulse tests
• Lightning impulse tests
• D.C. dielectric tests
• Combined voltage tests (BiAS)
• Chopped wave tests
All tests can be performed also under rainy conditions

Technical Capabilities

A.C. Power frequency: Up to 1,2 MV 50 Hz
Lightning impulse: Up to 2,5 MV (1,2 μs / 50 μs)
Switching impulse: Up to 1,6 MV (250 μs / 2,500 μs)
D.C. Direct voltage: Up to 1 MV D.C.
Partial discharge: Up to 750 kV
RIV testing: Up to 550 kV

High Power Laboratory

Testing Portfolio

Basic short circuit test duties: Full pole 500 kV / 63 kA / 50 Hz
Half pole 800 kV / 63 kA / 50 Hz
Short line fault tests duties: Artificial line simulation up to 63 kA
Capacitive current switching tests : 420 kV / 63 kA / 50 Hz full pole
Out of phase making & breaking tests 300 kV full pole
420 kV and higher in half pole
Internal arc tests up to 63 kA

• Commutation switching tests in D.C.
• Power supply di/dt measurement using Rogowski coils
• Arc voltage measurement tests

Technical Capabilities:

Maximum generator output : 2 x 2,500 MVA
Maximum short-circuit current (single) : 100 kA
Maximum voltage for synthetic tests: 1,000 kV
Frequency: 50/60 Hz
Testing Halls : 3

Medium Power Laboratory

Testing Portfolio

Short time current withstand for:

-1 transformer:

– 2 transformer:

 

up to 80 kA rms for 3s and 200 kAp

up to 80 kA rms for 3s and 260 kAp

Disconnector busbar transfer current up to 4,000 A

• Earthing switch breaking and making of inductive current

Technical Capabilities

Transformers 2 x 23 MVA – 72.5 kV to 1200 kV
Regulator transformer 10 V to 850 V and 4,000 A – Power factor < 0,15

Climatic & Mechanical Tests Laboratory

Testing room: D x W x H = 11 x 6 x 6.8 m

Testing Portfolio
• Icing tests
• Mechanical tests
• Leakage measurements: SF6, CF4, N2
Technical Capabilities:
Temperature range: from -60 °C to +60° C


Temperature Rise Tests Laboratory

Testing room: 2 parallel & independent

Testing Portfolio:
• Short term temperature rise tests
• Long term temperature rise tests
• Calculation of temperature rise values based on the resistance measurement of the current transformers

Technical capabilities:

Tests in A.C. Single-Phase (50/60 Hz) – up to 50 kA
Tests in A.C. Three -Phase (50/60 Hz) – up to 10 kA
Tests in D.C. up to 4 kA
Number of temperature sensors Up to 200 x PT1000
Ambient temperature Controlled up to 40 °C.

Value Added Services

Consulting & technical advisory
Logistics, assembly, gas handling and operational assistance
Gas mixture management including SF6, CF4, N2 and g3
Gas analysis with material lab
Mechanical endurance assets
Decontamination
Destruction after tests
Internationally recognized type tests reports covered by accreditation of COFRAC for the tested equipment according to ISO/ IEC 17025. (Accreditation N°1-0260)
ASEFA certification with inspector.