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Circuit Breaker Analyzer and Timer CAT series instruments are designed for condition assessment of circuit breakers. Timing channels record closing and opening of main contacts, resistor contacts, and auxiliary contacts. CAT instruments records graphs of both Open and Close coil currents and displacements of HV and MV circuit breaker moving parts. Main contact channels can also measure resistance value of pre-insertion resistors (if present in the circuit breaker).
Test results are printed on an 80 mm thermal printer in tabulated and graphical form. User can select any desired operational mode: Close (C), Open (O), Close-Open (C-O), Open-Close (O-C), Open-Close-Open (O-C-O).
CAT instruments are supplied with DV-Win software, which provides full control of all CAT functions from a PC, acquisition and analysis of test results. |
| Typical application areas of CAT instruments are high-voltage substations and industrial environments. An important part of commissioning, maintaining and production of circuit breakers are: |
- Simultaneous measurement of Main contacts and auxiliary contacts, including pre-insertion resistors
- Resistance measurement of pre-insertion resistors
- Evaluation of the synchronization between the circuit breaker poles
- Measurement of coil currents, simultaneously for both coils
- Evaluating the state of the substation’s batteries by graphically showing the voltage value
- Measurement of stroke, contact wipe, over-travel, rebound and average velocity of breaker’s moving parts
- "First trip” test available
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| Circuit Breaker Analyzers and Timers CAT30 series |
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| TIME MEASURING CHANNELS |
3 |
3 |
3 |
3 |
3 |
3 |
| COIL OPERATION |
NO |
YES |
YES |
YES |
YES |
YES |
| COIL CURRENT MEASUREMENT |
NO |
YES |
YES |
YES |
YES |
YES |
| TRIGGER INPUT |
YES |
YES |
YES |
YES |
YES |
YES |
| AUX CONTACTS TIMING CHANNELS |
NO |
1 |
3 |
3 |
3 |
3 |
| ANALOG INPUTS |
NO |
NO |
NO |
YES |
YES |
YES |
| ANALOG TRANSDUCER INPUT |
NO |
NO |
NO |
YES |
NO |
YES |
| DIGITAL TRANSDUCER INPUT |
NO |
NO |
NO |
NO |
YES |
YES |
| FIRST TRIP TEST |
NO |
NO |
NO |
YES |
YES |
YES |
| PC SOFTWARE |
YES |
YES |
YES |
YES |
YES |
YES |
| BUILT-IN THERMAL PRINTER |
OPTIONAL |
OPTIONAL |
OPTIONAL |
OPTIONAL |
OPTIONAL |
OPTIONAL |
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| |
| Circuit Breaker Analyzers and Timers CAT60 series |
| |
| TIME MEASURING CHANNELS |
6 |
6 |
6 |
6 |
6 |
| COIL OPERATION |
YES |
YES |
YES |
YES |
YES |
| COIL CURRENT MEASUREMENT |
YES |
YES |
YES |
YES |
YES |
| TRIGGER INPUT |
YES |
YES |
YES |
YES |
YES |
| AUX CONTACTS TIMING CHANNELS |
1 |
3 |
3 |
3 |
3 |
| ANALOG INPUTS |
NO |
NO |
YES |
YES |
YES |
| ANALOG TRANSDUCER INPUT |
NO |
NO |
YES |
NO |
YES |
| DIGITAL TRANSDUCER INPUT |
NO |
NO |
NO |
YES |
YES |
| FIRST TRIP TEST |
NO |
NO |
YES |
YES |
YES |
| PC SOFTWARE |
YES |
YES |
YES |
YES |
YES |
| BUILT-IN THERMAL PRINTER |
OPTIONAL |
OPTIONAL |
OPTIONAL |
OPTIONAL |
OPTIONAL |
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| Accessories |
| Cables |
DV Power provides Main contacts cable set for time measurement, with different alligator clips. Coil control cable set, Auxiliary cable set and External Trigger cable set can have different terminations: |
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| |
 |
 |
Terminations available for Coil control cable,
Auxiliary cable and External trigger cable |
|
| Digital rotary transducer |
Allows for very accurate motion measurement.
Digital transducers don’t need to be re-calibrated.
Mounting becomes easier due to the fact that this transducer has no zero point. |
 |
| Linear analog transducers |
Linear analog transducers allow for motion measurement of circuit breaker's moving parts.
Linear transducers are available in several lengths. Please contact DV Power for more
information. |
|
| Built-in thermal printer |
| We deliver CAT series devices with 80 mm paper wide built-in thermal printer, as an optional accessory. |
 |
| Current clamps |
| Current clamps can be connected to Low voltage analog input in order to capture the “first trip” test and evaluate the condition of the circuit breaker mechanism that has been stationary for a long time. |
 |
Transducer mounting kit |
| The kit is very flexible and can be mounted in a number of
different positions, both on the circuit breakers poles and operating mechanisms. |
- Big clamping base
- Small clamping base
- Articulated arm
- Magnetic base
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