MTS Non-Torque Loading (NTL) Systems

Apply precise, extremely high-force rotational and off-axis loading to wind turbine drive train and bearing systems to study their performance and durability characteristics under a full-spectrum of real-world operating conditions. Available in a range of capacities, these highly robust systems are deployed worldwide to help achieve critical improvements in wind turbine reliability.

Applications

Performances sous charge
Mesure de la déflexion statique et de la rigidité
Durabilité
Simulation et vérification du système

Test Specimens

Assemblages de nacelles
Systèmes de transmission
Composants de transmission
Principaux systèmes de roulements
Systèmes de paliers de lacet

Test Standards

Commission électrotechnique internationale Spécification technique 61400-23

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Key Product Features

Innovative Technology

Integral low-friction hydrostatic bearing technology delivers superior dynamic performance

Accurate / Repeatable

State-of-the-art MTS controls and software ensure high-fidelity simulations and optimum test accuracy

Versatile

Ideal for optimizing nacelle assemblies, drivetrain systems and components, and blade pitch, yaw and main bearing systems

Efficient Operation

Robust, efficient designs result in low cost of operation, high uptime and long life

Featured Case Studies

Technical Overview

	NTL 5U ²	NTL 10	NTL 20
Maximum Force & Moments ^3,4
Axial Force (Fx)	4 MN	4 MN	8 MN
Radial Force (Fy)	3.25 MN	3.25 MN	8 MN
Vertical Force (Fz)	3.25 MN	3.25 MN	8 MN
Drive Moment (Mx)	8 MNm	8 MNm	19 MNm
Bending Moment (My)	7.2 MNm	14.3 MNm	56 MNm
Bending Moment (Mz)	7.2 MNm	14.3 MNm	56 MNm
Motion @ 0 angle ⁵
Axial Range of Motion (x)	+/-38 mm	+/-38 mm	+/-70 mm
Lateral Range of Motion (y)	+/-30 mm	+/-30 mm	+/-50 mm
Vertical Range of motion (z)	+/-30 mm	+/-30 mm	+/-50 mm
Angular Motion ⁵
Angular Range of Motion (Ѳy)	+/- 1.75 deg	+/- 1.75 deg	+/- 2.0 deg
Angular Range of Motion (Ѳz)	+/- 1.75 deg	+/- 1.75 deg	+/- 2.0 deg
Maximum Rotational Speed (N)	50 rpm	50 rpm	30 rpm
System Dimensions/Weight
Length (x/thrust direction)	2.98 m	2.98 m	-
Width (y/lateral direction)	3.8 m	3.8 m	-
Height ^{6, 7}	3.6 m	3.6 m	-
Weight ⁸	~76,000 kg	~80,000 kg	-

NOTES:

1. Specifications subject to change, please contact MTS for specification verification

2. Fully field upgradable to NTL10 Moment capability

3. All forces and moments specified at face of NTL output shaft

4. Uniaxial (single-axis) performance

5. Under unloaded conditions

6. Does not include foundation adapter plate (must be at least 700 mm tall)

7. Does not include optional safety railing on top of system (approximately 1.1 m additional)

8. Does not include foundation adapter plate, coupling or input shaft; does include output shaft

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