Model 5895 Transformer Micro-Ohmmeter

Range, Full Scale, Resolution, Test Current & Accuracy

Range: 100 Ω

Full Scale: 180.00 Ω

Resolution: 10 µΩ

Test Current: 0.1 A

Accuracy: 0.1%

Range: 10 Ω

Full Scale: 18.000 Ω

Resolution: 1.0 µΩ

Test Current: 0.5 A

Accuracy: 0.1%

Range: 1 Ω

Full Scale: 1.8000 Ω

Resolution: 0.1 µΩ

Test Current: 1.0 A

Accuracy: 0.1%

Range: 100 µΩ

Full Scale: 180.00 µΩ

Resolution: 10 µΩ

Test Current: 5.0 A

Accuracy: 0.1%

Range: 10 µΩ

Full Scale: 18.000 µΩ

Resolution: 1 µΩ

Test Current: 5.0 A

Accuracy: 0.1%

Range: 10 µΩ

Full Scale: 1.8000 µΩ

Resolution: 0.1 µΩ

Test Current: 10 A

Accuracy: 0.2%

Supply

110/120 V 50/60 Hz

220/240 V 50/60 Hz

VA Rating

500 VA

Dimensions

460 × 460 × 150 mm

Net Weight

16.5 kg

Stable, accurate measurements can be achieved in a fraction of the time required when using more traditional bridge methods. For an average-size distribution transformer, the resistance reading is available within 10 seconds.

Typical Reading Times:

• 
  10 seconds – 11 kV, 220 kVA Transformer
  
• 
  40 seconds – 132 kV, 240 MVA Transformer
  
• 
  100 seconds – 400 kV, 220 kVA Transformer
  
• A high test current and unique circuitry is used to rapidly drive the core into saturation and to eliminate any oscillation of the magnetic field, thus enabling a steady reading to be obtained quickly. A large high intensity LED is illuminated when the instrument is in the "Read" mode and remains ON when the instrument is switched to "Zero" until any E.M.F.'s, generated in the transformer as the magnetic field collapses, have fallen to a safe level for the leads to be removed.