lmeTTest-DONG GUAN LMET TEST TECHNOLOGY CO.,LTD

Home > Product > Vibration Tester

Electro-Dynamic Shaker

Electro-Dynamic Shaker
  1. DESCRIPTION & SPECIFICATION

ELECTRO-DYNAMIC SHAKER

FUNCTIONAL FEATURES

■Double magnetic circuit structure to ensure high magnetic field intensity & reduce flux leakage; Special degaussing structure can reduce flux leakage to below 1 mt;

■U-type spring ,rollers and linear bearing for strong resistance of deflecting load;

■Air spring are used for vibration isolation; Vibration system work steadily even with heavy load; no need special foundation;

■Protection devices are provided for over-thermal, over-load, over-current, over-voltage, and over-displacement of the vibration tester; Electrical network protection devices for over-voltage, under-voltage, lacking phase; Drive power , current-limiting , soft-start, over-temperature, short-current,module fault protecting;

■Able to complete sine ,random , impact environmental tests;

■This system requires voltage fluctuation, ≤±10% ;

■This system requires Grounding resistance, ≤4Ω;  

■High reliability, especially suitable for long-time operation;

TECHNICAL PARAMETERS

Model No.Rate Sine Force(kgf)Rated Random Force RMS (kgf)Frequency Range(Hz)Displacement  (mm p-p)Max. Velocity(m/s)Max. Acceleration(Sine)(g)Armature Mass(kg)
LTS-200200200DC~450025.41.81002
LTS-300A300300DC~400025.41.81002.5
LTS-300B300300DC~3000401.8407
LTS-600600600DC~3500511.81006
LTS-100010001000DC~4500511.810010
LTS-150015001500DC~3000511.87520
LTS-200020002000DC~3000511.810034
LTS-340034003400DC~2500511.810034
LTS-400040004000DC~2500511.810034
LTS-500050005000DC~2700511.810050
LTS-640064006400DC~2500511.810064
LTS-700070007000DC~2500511.810064

AMPLIFIER

GENERAL INTRODUCTION

Using the MOSFET field-effect’s high frequency switch power, through digital circuit to amplify and restore the low-voltage signal which input by controller, Then the output the original signal to vibration tester's moving coil circuit, and drive vibration tester's extension table movement.

FUNCTIONAL FEATURES

This system adopts the sine pulse width modulation technology of digital power amplifier. Its working principle Is: 

Using the MOSFET field-effect’s high frequency switch power, through digital circuit to amplify and restore the low-voltage signal which input by controller, Then the output the original signal to vibration tester's moving coil circuit, and drive vibration tester's extension table movement.

The main part of the digital power amplifier: the front control, power amplifier module, protection circuit, the power part and electric cabinet.

Easy maintenance: Interchangeable power module box, compact design, saving space, easy to maintenance.

LCD display: Logic module adopts microcomputer CPU chip processor, LCD display function; Can be showed various system data in detail (The power amplify output True RMS value, with additional data display) and operation state and fault judgment. With remote control, remote measuring, remote communication function, friendly interface, easy operation.

Protection function: The power amplifier set up protection of power grid over-voltage, power grid under-voltage, power grid lack of phase, logic fault, power module, power temperature module, output over-current, output over-voltage,driving power, the table’s displacement, table temperature, etc. Any failure occurs, shut down output, with sound and lighting alarm at the same time. Except the above protection, also has poor RMS value the protection, and emergency stop protection.

High conversion efficiency ( higher than 92%) ,and high conversion frequency .

TECHNICAL FEATURES

Amplifier ModelMax No. of sub-modules supplied Max Power OutputMax Output VoltageMax Output CurrentAmplifier EfficiencySignal-Noise-RatioSwitching Frequency
LT-A-100212 kVA 120 V rms 100 A rms> 92%More than 65 dB at 100 V rms output, 10 k ohm input termination with rated resistive load.112 kHz
LT-A-400848 kVA 120 V rms400 A rms> 92%112 kHz
LT-A-7001484 kVA 120 V rms400 A rms> 92%112 kHz
LT-A-30003584 kVA120 V rms3,000 A rms> 92%112 kHz


Video Link : https://www.youtube.com/watch?v=kv_7SfFQ6oY 

DONG GUAN LMET TEST TECHNOLOGY CO.,LTD