DV Power CAT I series CAT03 is a standalone or PC-controlled circuit-breaker timer. The timing channels record closing and opening, of the main and resistor contacts instantly when the CAT03 senses a voltage over a breaker coil.
DV Power CAT I series CAT31/CAT34 are standalone or PC-controlled digital instruments for condition assessment of the circuit breakers. Both are intended for timing measurement of circuit breakers with one break per phase.
Common features:
1 break per phase
Simple and easy to operate
Robust design for field use
Accurate measurement in high voltage environment
Timing and motion measurement
Voltage and current measurement
Detailed analysis of test results using DV-Win software
Resistance measurement of pre-insertion resistors
Features for each model:
CAT03:
3 timing channels for main and resistive contacts
Download of test results on a USB memory stick
CAT31:
Timing measurement
3 Channels for main contacts
3 Channels for auxiliary inputs
TRIP & CLOSE coils current measurement
CAT34:
Timing and motion measurement
3 timing channels for main and resistive contacts
3 timing channels for auxiliary inputs
4 Analog Inputs + 1 Transducer Input
Supports both digital and analog transducers
Application:
Simultaneous timing measurement of up to 6 main contacts (*1 break per phase, depends on model) including pre-insertion resistors (if present in the circuit breaker) and 3 auxiliary contacts,
Resistance measurement of the pre-insertion resistors (if present in the circuit breaker),
Evaluation of synchronization between the circuit breaker poles,
A measurement of the coil currents, simultaneously for 2 coils,
Evaluating the state of the substation’s batteries by graphically showing the voltage value,
A measurement of displacement, contact wipe, over-travel, rebound, damping time and average velocity of the breaker’s moving parts,
“First trip” test.
Software:
Full control of the CAT functions from a PC
Downloading the test results from the instrument
Acquisition and analysis of the test results
The test results can be viewed, edited, saved, printed and exported
Viewing and overlaying several graphs, for an easy test result comparison
Selecting the measurement points and intervals using the two cursors
Zoom and pan graph feature
Specific test sequence setup
Customized configuration of the test result graphs
Creation of predefined test plans for an easy and quick field testing