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  All Products >> NEW: DS-e/d Series Armature Tester

DS-e/d Series Armature Tester




DS820e                                     DS820d



Applicable to accurate test of armatures made by single-fork, double-fork or large and small bar winding process; and test of armatures made by piezoresistor, carbon commutator, equalizer, double-insulation and other special process


Functional Features

All electrical performance 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;

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 operator 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

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

Excellent dustproof, cooling, double-station lighting design



Dislocated Hookup (all hookup to bars is wrong)

Double-Insulation HIPOT

Piezoresistor Test

Equalizer Test

Armature Temperature Compensation

Error Prevention and Correction

Label Print

Connection with PLC


Technical Specifications






DC Resistance Test

Range: 0.500mΩ ~ 500.0Ω (automatically switch the range in the FSR; selected based on the order requirements)

FSR Accuracy: ±1.5%

Welding Resistance Test

Range: 0.00199.00 mΩ, Resolution: 1 μΩ

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

Note: NOT for 3-bar armatures

Surge Test

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

Accuracy: ±5 %; Comparison Method: differential area; Sampling Frequency: 40MHz adaptive

Insulation Resistance Test

Test Voltage: DC 500V automatic regulation; Measuring Range: 5 ~ 500MΩ Accuracy: ±5 %


Test Voltage: 0.52 kV (settable, auto-regulated)

Leakage current: 0.15 mA, 10 mA optional

Measuring Accuracy: ≤±5 %

Test Time: continuously adjustable from 0 to 60 seconds

Test Voltage: 0.52 kV (settable, auto-regulated), exclusive for double insulated armatures; perform surge test from core to shaft, coil to shaft and coil to core respectively

Leakage current: 0.15 mA, 10 mA optional

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

Test Time: continuously adjustable from 0 to 60 seconds

Operating Power Supply

AC220V±10 %, 50H

Operating Environment

Temperature 0-40, Humidity 80 %

Outline Dimensions



5.7′ blue-white screen

10' color touchscreen

5.7′ blue-white screen

10' color touchscreen

Data File Format




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

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1233 New Republic Rd. (near N. Zhongshan Rd.), Shanghai 200070

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