E K L Schaltelektronik Dresden GmbH

Electrical Laboratory
Fast - Flexible - Favourable

Our test facilities and measuring equipment have primarily been designed for testing devices with rated currents of up to 1000 A:

Switching capacity, short-circuit, electrical endurance

  switching capacity
short-circuit *)
test voltage test current
AC up to 800 V / 50 Hz up to 10000 A up to 1000 A
DC up to 1100 V up to 2000 A up to 1000 A
DC up to 1500 V up to 100 A up to 100 A
load resistive, inductive resistive, inductive,

phase angle controlled
test current activation /
test specimen activation

selectable number of
current half-waves

test sequences
controlled and
monitored via PLC

3 load circuits

*) depending on operating parameters and in a very short duration of current flow higher peak values are possible

High-current testing at extra-low voltage

  • Test current up to 20 kA AC (single and three phase)
  • Magnetic release and contact systems
  • Phase angle controlled test current activation
  • selectable number of current halfwaves

Temperature rise / continuous current

alternating current
(single and three phase)
up to 2500 A unregulated
up to 1000 A regulated
direct current up to 1500 A unregulated
  • Temperature measurement with thermocouples, pyrometer, thermography
  • Continuous recording of temperatures and voltages (AC / DC) with data loggers
  • Prüfung in der Temperaturkammer bei -40...80 °C Umgebung möglich
  • Overload testing at devices with fuses
  • Long-term heating, cycling test, aging test of connections, terminals and contact points
  • Derating curves determination
  • Durability for terminals without screws
  • Test with aluminium conductors

Response values / tripping behaviour

  • Thermal magnetic and electronic release (e.g. contactors and relays)
  • Test current AC up to 1000 A regulated
  • PLC-controlled test sequences, 3 phases separate adjustable
  • Integratable change of the ambient temperature (-40...80 °C) in the sequence control

Contact safety as well switching time - / Bounce time measurement

  • Phase angle controlled operation timing
  • Test parameters available on request


  • AC voltage up to 6 kV
  • Impulse voltage (1,2 µs/ 50 µs) up to 10 kV
  • Protection against accidental contact
  • Clearance and creepage distance
    measuring / testing / designing