The new Model CI-50 has numerous improvements over previous versions, such as:
Tinker & Rasor re-introduces the Model CI-50 50 Amp Current Interrupter.The new Model CI-50 is the perfect companion for the CP Tech with isolated trouble. This product is easy to use, and programs quickly in the field. The instrument offers a a wide range of cycle times and has many new and innovative features not found anywhere else. The instrument represents the latest in electronics in the industry, with a new design and numerous improvements.
TECHNICAL APPENDIX A Important Note Regarding Rectifier Spikes:
Most rectifiers experience a voltage spike when opening and closing, due to a capacitance effect in the system that can be quite large and very fast. Depending upon the magnitude and duration of the spike, the CI-50, and most other current interrupters made today, can become significantly damaged.
It is recommended that an oscilloscope be connected to a rectifier and the rectifier be manually cycled to see what type of spike may be present, prior to using an interrupter.
This step becomes especially important when the DC output of the rectifier is ≥ 50% or of the maximum current the interrupter can handle. In the case of the Quasar, which is a 100 Amp max instrument, a rectifier with an output greater than 24 amps should be investigated with an oscilloscope.
The Magnitude and duration of the voltage spike is expressed in the graph below. The green area of the graph is 0 – 750 volts and 0 – 2 milliseconds (0.002s) of time. The red area shows higher voltages and longer durations which can damage the instrument.
If a rectifier is found to have a voltage spike in the red area of the graph, it is not suggested that the current interrupter be used if the current to be interrupted is greater than or equal to 50% of the max specified current of the instrument.