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Apply single- and dual-axis cyclic loading to full-scale wind turbine blades and sub-components at resonant frequencies to meet fatigue-testing demands of International Electrotechnical Commission (IEC) Technical Specification 61400-23. The MTS offering includes two complementary solutions: the fast, powerful Ground-coupled Resonance Excitation (GREX) System, and the flexible, efficient Inertial Resonance Excitation (IREX) System.
State-of-the-art controls, data acquisition and application software comprise an efficient, high-fidelity test and simulation environment.
Configurable for flap-wise, edge-wise and dual-axis resonant blade fatigue testing
Features automated control of test end-levels and test frequency
Integrates fatigue-rated MTS test actuators, swivels and mounting hardware
Diagram
GREX 50 Standard Specifications | |
Force capacity | 50 kN |
Actuator Length | 5.67 m at mid-stroke |
Stroke | 1.75 m |
Velocity | 2.5 m/sec (@25kN force) |
Servovalve | 450 lpm |
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Special Options |
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Extension Tube | Up to 3m extension |
Hydraulic System | 260 lpm (minimum recommended) |
Accumulation required | 75 L Pressure / 37.75 L Return (recommended) |
Diagram
IREX Standard Specifications | |
Force capacity | 50 kN |
Moving mass range | 160-1010 kg |
Moving mass increment | 50 kg |
Stationary mass (typ) | 170-230 kg |
Total mass (typ) | 330-390 kg |
Dimensions | 1.42x.53x.48 m |
Stroke | 0.15 m |
Velocity | 1.37 m/sec |
Servovalve | 120 lpm |
Hose sizes | -16P, -16R, -8D JIC |
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Special Options |
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Tilt angle range | +/- 10 deg |
Tilt angle increment | 2 deg |
Accumulation required | 2 L (normal) |
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Model 505.60 |
Model 505.90 |
Model 505.120 |
Model 505.150 |
Model 505.180 |
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Flow rates (for 60 Hz models) |
227 lpm (60 gpm) |
340 lpm (90 gpm) |
454 lpm (120 gpm) |
568 lpm (150 gpm) |
681 lpm (180 gpm) |
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Flow rates (for 50 Hz models) |
200 lpm (53 gpm) |
300 lpm (80 gpm) |
400 lpm (106 gpm) |
500 lpm (133 gpm) |
600 lpm (160 gpm) |
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Noise level* |
68 dB (A) |
68 dB (A) |
70 dB (A) |
71 dB (A) |
72 dB (A) |
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Reservoir capacity (maximum) |
950 L (250 gal) |
950 L (250 gal) |
1,893 L (500 gal) |
1,893 L (500 gal) |
1,893 L (500 gal |
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Width |
100 cm (39 in) |
100 cm (39 in) |
100 cm (39 in) |
100 cm (39 in) |
100 cm (39 in) |
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Height |
200 cm (79 in) |
200 cm (79 in) |
200 cm (79 in) |
200 cm (79 in) |
200 cm (79 in) |
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Length |
287 cm (113 in) |
287 cm (113 in) |
457 cm (180 in) |
457 cm (180 in) |
457 cm (180 in) |
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Weight with maximum oil |
1,907 kg |
2,134 kg |
2,338 kg |
2,542 kg |
2,747 kg |
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(4,200 lb) |
(4,700 lb) |
(5,150 lb) |
(5,600 lb) |
(6,050 lb) |
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Motor starter configuration |
Wye-Delta |
Wye-Delta |
Wye-Delta |
Wye-Delta |
Wye-Delta |
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Motor size |
45 KW (60 Hp) |
45 KW (60 Hp) |
45 KW (60 Hp) |
45 KW (60 Hp) |
45 KW (60 Hp) |
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Number of Motor/pump units |
2 |
3 |
4 |
5 |
6 |
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Heat exchanger |
Stainless steel plate style |
Stainless steel plate style |
Stainless steel plate style |
Stainless steel plate style |
Stainless steel plate style |
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Hydraulic connections |
Pressure & Return: SAE 2-inch C61 Flange |
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Drain: JIC -16 |
Drain: JIC -16 |
Drain: JIC -16 |
Drain: JIC -16 |
Drain: JIC –16 |
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Cooling water connection |
3.8 cm (1.5 in) |
3.8 cm (1.5 in) |
3.8 cm (1.5 in) |
3.8 cm (1.5 in) |
3.8 cm (1.5 in) |
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* Sound levels [dbA] are expressed as a free field value. Readings may vary with acoustic environment. |
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Specifications subject to change without notice. Please contact MTS for specifications critical to your application. |
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Operating pressure: 210 bar (3,000 psi) |
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Pump type: Variable displacement pumps |
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Filtration: 3 microns on the return side |
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Maximum ambient operating temperature: 40° C (104° F) |
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Minimum ambient operating temperature: 5° C (40° F) |
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