SEV 440A Series

The SEV 440A Series of Shakers are matched with the DSA 60K and DSA 80K Series of Power Amplifiers. Its armature and field supplies are assembled in two 19-inch network rack of 36 unit height.

Standard Features

• Complies with Machinery Directives, Low Voltage Directive and Electromagnetic Compatibility Directive under CE
• Magnesium alloy armature structure
• Cooling hose pipe of extended temperature range
• Self-lubricating central guidance bearing
• Trunnion mounted shaker for operation in vertical and horizontal position
• Pneumatic and DC based auto-centring of armature head
• Body isolation using air bellows to isolate vibrations from the shaker
• Air isolation mounts between system base and ground

Optional Features

• Up to 76 mm (3.0 in) with Long Stroke
• PC based Power Amplifier Remote
• Auto Resume from power failure
• Auto Stop after user profile completion
• Attachment to Horizontal Slip Table and Head Expander
• Integration with Environmental Chamber
• Lowering of gauss level at the armature head

Technical Specifications

SEV 440A Series Shaker, DSA Series Amplifier	SEV 440A – DSA 60K	SEV 440A – DSA 80K
System Performance
Armature Diameter	640 mm	640 mm
Sine Force (peak)	6000 kgf	8000 kgf
Random Force (rms)	6000 kgf	8000 kgf
Shock Force (rms)	12000 kgf	16000 kgf
Acceleration (sine)	90 g	85 g
Velocity (sine peak)	1.8 m/s	1.8 m/s
Velocity (shock peak)*	2.4 m/s	2.4 m/s
Displacement (pk-pk)**	51 mm (2 in) / 76 mm (3 in)	51 mm (2 in) / 76 mm (3 in)
Axial Resonance (±5%)	2000 Hz	2000 Hz
Useful Frequency Range	5 to 2000 Hz	5 to 2000 Hz
Protection Interlocks	Mains Input Over & Under Voltage, Over Current, Loss of Input Phase, Over Temperature Amplifier & Shaker, Field Fail, Cooling, User Safety Interlock if specifically required by the customer
Shaker Characteristics
Moving Element Mass	68 kg	85 kg
Internal Load Capability	680 kg	680 kg
Suspension Axial Stiffness	15 kg/mm	15 kg/mm
Suspension Cross-Axial Stiffness	500 kg/mm	500 kg/mm
Stray Magnetic Field***	< 1 mT (10 gauss)	< 1 mT (10 gauss)
Cooling Air Flow	3000 cfm	3000 cfm
Compressed Air****	6 bar (87 psi)	6 bar (87 psi)
Shaker Body Mass	6000 kg	6000 kg
Dimensions (L x W x H)	1700 x 1080 x 1345 (mm)	1700 x 1080 x 1345 (mm)
Amplifier Characteristics
Power Output	60 kVA	80 kVA
Total Harmonic Distortion*****	Typically 0.5%	Typically 0.5%
Input Impedance	> 10 kΩ	> 10 kΩ
Input Sensitivity	4 Vrms, Compatible with all standard controllers	4 Vrms, Compatible with all standard controllers
Signal-to-Noise Ratio	> 75 dB	> 75 dB
Power Efficiency*****	> 92%	> 92%

Armature Insert Pattern	SEV 440A Shaker
Pattern	PCD	PCD	PCD	PCD
Position of Insert	Centre	141.4 mm	200 mm	300 mm
No. of Inserts (Total – 17)	1	4	4	8

Safety Norms
CE	Complies with Machinery Directive (2006/42/EC), Low Voltage Directive (2014/35/EU), and Electromagnetic Compatibility Directive (2014/30/EU)

Notes:

*Peak shock velocity with reduced field power **76 mm (3.0 in) with Long Stroke option ***150 mm above armature head ****Compressed air to be provided by customer at installation site *****Measured on pure resistive load Customised specifications are also tailored on request Please contact Sdyn for advice on the optimum specifications to meet your testing requirements Specifications are correct at the time of publication and are subject to improvement or amendment without prior notice