Gesellschaft für elektrische Hochleistungs­prüfungen Member of Short-Circuit Testing Liaison (STL)

Testing Standards & Testing Footprint

Depending on the location and the scope of accreditation, the PEHLA Laboratories offer various types of testing, e.g. performance tests, dielectric, mechanical, thermal and climatic tests according to international and national product standards. These include IEC, IEEE and DIN EN standards.

The accreditation certificates of the PEHLA laboratories provide information about their technical capabilities.

Testing Footprint

Switching capacity and short-circuit current carrying capacity

    • Direct test, three phase 6.4 GVA, 240 kV
    • Direct test, single phase 4.2 GVA, 240 kV
    • Synthetic test, single phase 43.8 GVA, 550 kV
    • Short-time current (1 to 3 s) 210 kA
    • Peak short-circuit current 650 kA
    • Load currents capacitive, inductive, ohmic

    Internal arc fault

    • Single-phase / three phase

    Dielectric tests

    • AC voltage 1.8 MV
    • Lightning impulse voltage 4 MV
    • Switching impulse voltage 2.4 MV
    • DC voltage 1 MV
    • Partial-discharge test Different methods of testing
    • Measurement of VFT (very fast transients) for equipment with a rated voltage up to 800 kV

    Temperature rise tests

    • Single-phase up to 50 kA / three-phase up to 25 kA
    • Temperature measurements: more than 100 temperature measuring points are possible
    • Voltage-drop-measurement / measurement of the resistance of the main circuit

    Mechanical tests

    • Mechanical function
    • Mechanical endurance
    • Tightness tests
    • Tests of interlocks
    • Verification of degree of protection

    Climatic tests

    • Temperature range - 65 °C to + 140 °C
    • Humidity Up to 98 % at + 40 °C
    • Room size 8.0 m x 5.0 m x 5.5 m
    • High-current source Up to 4 kA
    • High-voltage source Up to 300 kV (DC and AC voltage)
    • Icing test

    Other tests

    • Test of solid pollution layer
    • Salt-fog test
    • Further tests on request