- Simple & easy to operate
- Timing measurement
- 3 Channels for main contacts
- 3 Channels for auxiliary inputs
- TRIP & CLOSE coils current measurement
- Resistance measurement of pre-insertion resistors
- Detailed analysis of test results with DV-Win software
The Circuit Breaker Analyzer & Timer CAT31 is a standalone or a PC-controlled digital instrument for condition assessment of the circuit breakers. It is intended for timing measurement of circuit breakers with one break per phase.
Multiple operations, such as Open-Close and Open-Close-Open, can be initiated by using a predefined delay time or by sensing a breaker’s contact position. External trigger is used to start timing of the breaker when sensing a voltage.
The auxiliary inputs are used to monitor the auxiliary (52a and 52b) contacts. The external trigger input can be used as the third auxiliary input.
The main contact channels can also measure the resistance value of the pre insertion resistors if they are present in the circuit breaker. Test results are printed on the 80 mm thermal printer (optional accessory) in tabulated and graphical form.
Viewing and overlaying several graphs for complete and easy test result comparison. Selecting the measurement points and intervals using two available cursors. Zoom and pan graph feature. Specific test sequence setup. Customized configuration of test result graphs.
For the CAT form of DV-Win software there is Help menu available, with detailed instructions and explanations of all functions and features.
- Measuring coil resistance using CAT device
- Deciding on length of a linear transducer for different types of circuit breakers
- Why do we record an actuating coil current waveform
- Dynamic contact resistance measurement
- First trip test
- Installation of linear and rotary motion transducers
- Using Test System CAT+SAT for CB Testing
- Using Non-linear Transfer Function for Rotary to Linear Motion Conversion
- O-C Time Results Interpretation
- Close-Open (Short-Circuit) Time Results Interpretation
- Recording Spring-Charging Motor Current Waveform