Product Specification

The Model 189 is a low ratio wound primary current transformer suitable for primary currents up to 100 amperes. The Model 189 table lists the most common current ratings. Primary terminals for the Model 189: for ratios of 30:5 and below are, No. 10-32 brass screws with one lockwasher (Dimension A=3.28), for ratios of 40:5 and above, 3/8-16 brass studs with one lockwasher and regular nut (Dimension A=4.10). 

Model 189 Low Ratio Wound Primary Current Transformer Features
? Secondary Terminals:
  Brass studs No. 8-32 UNC with one flatwasher, lockwasher and regular nut.

Model 189 Low Ratio Wound Primary Current Transformer Specifications
? Continuous Thermal Current Rating Factor:
  1.33 at 30° C amb., 1.0 at 55° C amb.
? Frequency: 50 - 400 Hz.
? Insulation Level: 0.6 kV, BIL 10kV full wave.
? Approximate weight: 0.75 lbs.

Model 189 Low Ratio Wound Primary Current Transformer Part Number