Mechanical Load Tester

The MLT24 is our most advanced test stand to simulate static and dynamic loads on modules and collectors. Twenty-four pneumatic cylinders with vacuum suction cups exert both compressive and tensile loads on the test sample, while reducing local mechanical stress points. The MLT24 is a reliability test stand for quality and product development testing. It offers a high degree of operational ease and flexibility. A high total exertable force allows product development with testing to failure.

See the YouTube video showing an MLT24 test stand in action at the CFV Solar Test Laboratory!

Technical specifications

Test area 2.25 m × 1.5 m
Simultaneous testing capacity 1
Number of pneumatic cylinders 24
Number of suction cups at one piston 1 (optional 4)
Maximum total exertable force with all cylinders Push +27,720 N
Pull -22,200 N
Corresponding maximum pressure load (on 2 m²) Push +13,860 Pa
Pull -11,100 Pa
Load cycle frequency 0.1 Hz (optional 1 Hz)
Number of deflection sensors 1 (optional 8)
Relevant standards IEC 61215, IEC 61646, IEC 62782, UL 1703, ISO 9806, EN 12975

Key facts

  • Reduced local mechanical stress on test unit through a high number of 24 suction cups
  • Fast and precise configuration of the cylinder array with mechanical coupling of the cylinders
  • Practical and ergonomic test setup through crank handles and scissor mechanisms
  • Fast adjustment for testing units of different sizes with sliding cross bars and quick release levers
  • High precision load measurement using sophisticated design of the force measuring frame
  • Static and dynamic load testing according to common international standards
  • Testing to failure through applicable forces up to +27 kN / -22 kN
  • Highly accurate deflection-measurement of the unit under test by optical distance sensors.
  • Electrical continuity measurement for PV modules available

Software features

  • Intuitive graphical user interface for full remote control of the test stand
  • Predefined load cycles according to IEC 61215 and IEC 61646
  • Dynamic testing according to IEC 62782
  • Tests with increasing load in 250 Pa steps according to EN 12975
  • Customized test schedules (even non-cyclic, free definition of various load setpoints, can be saved and restored)
  • Real-time visualization of key measurements in graphical displays
  • Quick and easy test scheduling – through displaying of required testing times