The Baker DX static motor analyser gives you confidence that a motor is correctly wound and insulated before it’s deployed in the field. In an industrial setting, the consequential cost of failure or unplanned downtime of critical rotating machinery can be significant. The Baker DX series can apply a wide set of off-line electrical tests to assess the condition of motors and coils.


The standards-compliant surge test – this has been a signature feature of Baker testers for decades – is the only test that can safely expose turn-to-turn insulation weaknesses. The Baker DX can find early indications of insulation weakness and faults in windings, between phases, coil-to-coil and in groundwall insulation. It can identify if contamination is impacting insulation strength. It can also detect problems with connections such as feed cable insulation weakness, motor imbalances, opens, or high resistance.


The DX’s benefits can be extended to low-impedance coils, such as armatures, through the use of the Baker ZTX low impedance coil accessory. The ZTX, which includes the ATF5000 commutator probe accessory, allows the DX to apply surge tests to coils which require higher currents.

DC tests

Voltage accuracy: 3%

Maximum resistance:

4 and 6kV models: > 25 / 50 GΩ

6kV HO model: > 50 GΩ

12kV model: > 75 GΩ

12kV HO model: > 75 GΩ

15kV models: > 100 GΩ

Current accuracy: 5%

Minimum resistance: 

4 and 6kV models:1 MΩ 

6kV HO model: 1 MΩ 

12kV model: 5 MΩ 

12kV HO model: 5 MΩ 

15kV models: 5 MΩ

Maximum output current: 

4 and 6kV models: 5 mA 

6kV HO model: 5 mA 

12kV model: 5 mA 

12kV HO model: 10 mA 

15kV models: 8.3 mA

Over-current trip: 1.2 mA


Surge tests

Capacitor size: 

4 and 6kV models: 40 nF 

6kV HO model: 100 nF 

12kV model: 40 nF 

12kV HO model: 100 nF 

15kV models: 100 nF

Surge energy:      

4 and 6kV models: 0.32 J/ 0.72 J

6kV HO model: 1.8 J

12kV model: 2.88 J

12kV HO model: 7.2 J

15kV models: 11.25 J

Short circuit current:     

4 and 6kV models: 280 A / 340 A

6kV HO model:  50 A

12kV model: 600 A

12kV HO model: 800 A

15kV models: 700 A / 2000 A

65 μH load voltage:    

4 and 6kV models: 4 kV / 6 kV 

6kV HO model: 6 kV

12kV model: 12 kV

12kV HO model: 12 kV

15kV models: 15 kV / 1.5 kV

Surge voltage accuracy: 12% 

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