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  • Rotation Direction Tester RDT-308

Direction of rotation tester

Rotation Direction Tester RDT-308

Detects direction of rotation (CW/CCW), poor connection and wrong winding of stator coils!

Features

  • Simple and precise direction-of-rotation testing with two test modes.
  • Automatic sensitivity adjustment function for testing with optimum detection sensitivity.
  • Up to 16 stator coils can be tested with one detector.
  • Communication function enables settings, results data transmission and automation to external devices.

Overview

The direction of rotation tester RDT-308 applies a 3-phase or single-phase current to a stator coil and measures the direction of rotation, distribution and variation of the magnetic flux generated by the current using a detector (detection sensor) installed in the stator coil.
The system supports stator coils with up to 16 poles, and can also test 12 / 8 / 6 / 4 / 2 poles when a 16-pole detector is used. A full range of functions such as automatic pole number detection, automatic gain and overcurrent protection are also available.

Test mechanism

Test mode 1 Rotation direction inspection

The waveforms of multiple magnetic fluxes detected by the detector are combined into two waveforms, phase A and phase B, and the overall direction of rotation and intensity are determined from the phase difference and amplitude.

Test mode 2 Inspection of phase difference and magnetic field strength by magnetic field distribution

Detects abnormalities in all magnetic fluxes and magnetic flux distributions measured by the multiple sensor coils built into the detector. Partial magnetic flux disturbances can be captured even when the overall direction of rotation is normal, leading to the detection of abnormalities in windings and connections. Although the detector must be positioned in the centre of the stator bore, more accurate testing can be carried out.


Demonstration software introduction

Simulated visualisation of the magnetic field of the stator coils.



Specification

Test item Test mode 1 Direction of rotation test (CW/CCW)
Test mode 2Magnetic field distribution test (phase difference/magnetic field strength)
Excitation voltage Phase type 3-phase / single-phase
Output waveform3-phase / 2-phase Sine wave output
Frequency5kHz
Excitation voltage (Setting range)Phase 5Vp-p (100 steps)
Max. applied current500mA
Detection Sensitivity Range 10 steps+Auto setting range mode
Protection functionsOvercurrent protection
General Power consumption 100 - 240VAC ±5% 50/60Hz
40VA以下
EnvironmentTemperature range5℃-40℃ Humid range20%-80%
CommunicationSIGNAL IO / RS-232C
Dimensions/Weights192(W)×95(H)×235(D) 1.8Kg
Accessories Power cable (3m)     1 unit 3P-2P conversion adapter  1 unit Diteotor Cable(1.5m)   1 unit Excitation signal cable (1.5m)  1 unit Normal Ditector Coil  1 unit Manual      1unit Spare Fuse(1A)  1unit
Sold separately ※1 Detector
※1 Detector cable 1.5 m
  • Test item
    Test mode 1Direction of rotation test (CW/CCW)
    Test mode 2Magnetic field distribution test (phase difference/magnetic field strength)
  • Excitation voltage
    Phase type3-phase / single-phase
    Output waveform3-phase / 2-phase Sine wave output
    Frequency5kHz
    Excitation voltage (Setting range)Phase 5Vp-p (100 steps)
    Max. applied current500mA
  • Detection
    Sensitivity Range10 steps+Auto setting range mode
    Protection functionsOvercurrent protection
  • General
    Power consumption100 - 240VAC ±5% 50/60Hz
    40VA以下
    EnvironmentTemperature range5℃-40℃ Humid range20%-80%
    CommunicationSIGNAL IO / RS-232C
    Dimensions/Weights192(W)×95(H)×235(D) 1.8Kg
  • Accessories
    Power cable (3m)     1 unit 3P-2P conversion adapter  1 unit Diteotor Cable(1.5m)   1 unit Excitation signal cable (1.5m)  1 unit Normal Ditector Coil  1 unit Manual      1unit Spare Fuse(1A)  1unit
  • Sold separately
    ※1 Detector
    ※1 Detector cable 1.5 m

※1 Detectors should be ordered separately after selecting the model that matches the test object from the compatibility table below.