User login
User name:
Register  Forget password?
      Product List
Finished Motor Tester
Motor Tester
Motor Parts Tester
Special Motor Tester
Other Testers
  All Products >> DS920 Universal Type

DS920 Motor Armature Tester (universal type)

Appearance Reference      Application Case


Applicable to electrical properties test of motor armature with any number of commutator bars, for example, automotive motors, motorcycle starter motors, power tools motors, traction motors, vacuum cleaner motors, fitness equipment motors, motors for kitchens, permanent magnetic micro-motors, special-purpose motors

Functional Features

All test items of an armature, including insulation resistance, AC HIPOT, bar-to-bar resistance and transresistance, winding hook direction, welding resistance, turn-to-turn surge test, are completed automatically at one time;

Enable or disable any test items, set pass criteria; release automatic light or sound alarm upon test result over-limit

Measure the welding resistance accurately to the micro-ohm level; the automatic judgment threshold for armature welding resistance can be set to 100 micro-ohms (ie 0.100 milliohms) or even smaller; discover armature rosin joints and nonconforming welds fast and accurately; the screen provides fault location information to facilitate armature troubleshooting

Unique automatic range switching and test tracking; therefore a higher accuracy than other similar instruments throughout the measurement range. It is not required to set the instrument measurement range as the armature resistance range is not required to know beforehand; even an ordinary operators can sample an armature with its parameters unknown very easily and formulate the automatic judgment criteria

Proprietary bar-to-bar resistance fuzzy sort and identification; automatically identify single-fork, double-fork or large and small bar winding process, and hookup direction; automatically track and test an armature regardless of where it is placed;

Automatic judgment of turn-to-turn surge test between any bars under any form of surge; more accurate identification of turn-to-turn faults in a large number of armatures with significant difference in process

HIPOT, turn to turn surge test voltage settable, automatically generated and regulated; test data immune to fluctuations from external grid; offset the inherent leakage current of test system automatically

Immune to armature high-voltage breakdown ignition in the test process, the instrument can work stably and reliably

Save, edit and call the automatic judgment criteria for armatures of different models or specifications; with no quantity limitations

Powerful data management function; can automatically number each armature, check the test result and graph for each model and armature, and generate statistics reports; reports can be exported via a USB disk

High test speed, standard double-station design, extremely high test efficiency

Upon order requirements, other special functions can be made available, for example: wrong hookup identification, inductance test, resistance compensation based on measured armature temperature, error prevention and correction, etc.

>>> Enter the Product Selection Guide ...

Technical Specifications

Commutator Bars


DC Resistance Test

Measurement Range: 0.500mO ~ 500.0.0O (automatically switch the range in the FSR; selected based on the order requirements)

FSR Accuracy: ±1.5%, ±0.5% (optional)

Welding Resistance Test

Measurement Range: 0.00199.00 mΩ, Resolution: 1 μΩ

Measurement Accuracy: ±10 μΩ (@ bar to bar resistance<1 Ω), ±20 μΩ (@1 A<bar to bar resistance<10Ω)

Note: NOT for 3-bar armatures

Insulation Resistance Test

Test Voltage: DC 500V auto-regulated (set a voltage up to DC 1000V, auto-regulated)

Measurement Range: 5500 MΩ

Measurement Accuracy: ±5%


Test Voltage: max. 1kV/2kV/3kV optional (settable, auto-regulated)

Leakage Current: 0.15 mA, 10 mA optional

Measuring Accuracy: ≤±5%, ±3% optional

Test Time: continuously adjustable from 0 to 60 seconds

Surge Test

Voltage Peak: max. 1kV/2kV/3kV optional (voltage peak settable, automatically regulated)

Measurement Accuracy: ±5 %; Comparison Method: wave differential area

Sampling Frequency: 40MHz adaptive

Host Computer


Color Display

17-inch LCD, true color



Input Device

Keyboard and mouse

Operating Power Supply

AC220V±10%, 50Hz

Operating Air Pressure


Operating Ambient Temperature


Operating RH


Outline Dimensions Reference (mm)

Height: 16801720

Width: 500820

Depth: 9001100

Dielectric Strength

1500V, 50Hz, 1min

Equipment Weight

About 100kg (depending on configuration)


1. “Optional” parameters, functions, number of stations, test fixtures and special specifications are subject to order negotiation and the state at delivery.

2. For technical indicators, test functions, system functions, shape & structure, configuration of fixtures & clamps, the ordering requirements shall prevail

网站设计Hits:5075  AoboorUpdateTime:2012-2-25 【Print】 【Close
Sales TEL: 021-56987200 66056657 Fax: 021-56987210 Switchboard: 021-56989500 56987206
1233 New Republic Rd. (near N. Zhongshan Rd.), Shanghai 200070

Copyright@2001-2020 Shanghai Aoboor Electric Co.,Ltd. China ICP No.2021022848