Circuit Breaker Analyzer & Timer (CAT) series are standalone or PC controlled digital instruments for circuit breakers’ condition assessment. They enable simultaneous measurements of up to 12 main contacts (4 breaks per a phase) including pre-insertion resistors and 6 auxiliary contacts. CAT series instruments record graphs of both, the open and close coil currents and displacements of the HV and MV circuit breaker moving parts. The main contact channels can also measure the resistance value of the pre-insertion resistors (if present in the circuit breaker).
The 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). Test results can be stored in the instrument’s internal memory, an USB memory stick or printed on a thermal printer (optional accessory) in both tabular and graphical form.
CAT instruments are supplied with DV-Win software, which provides full control of all CAT functions from a PC, as well as acquisition and analysis of test results.
•Internal battery power supply
•Online measurement (First trip test)
•Offline measurement
•DC voltage and DC current measurement
•Touch screen color display 145 mm (5.7 in)
•On-site analysis of test results (overlay up to 4 records in graphical form)
•Test results analysis and comparison with results obtained from other CAT instruments using DV-Win software
Number of contact inputs: 3 (3 x 1), 1 per phase
Each channel detects Main contacts
- Closed ≤ 10 Ω
- Resistor contacts range 10 Ω to 5 kΩ
- Open ≥ 5 kΩ
Open circuit voltage: 20 V DC
Short circuit current 50 mA
Time measurement resolution:
0,05 ms for 1 s test duration
(sampling rate 20 kHz)
0,1 ms for 2 s test duration
(sampling rate 10 kHz)
Time accuracy: 0,05% of the reading ± resolution
DC Current Clamps
Nominal current: 300 ARMS or 450 A DCPK
Measuring ranges: 30/300 A
Frequency range: DC to 20 kHz (-3 dB)
AC Current Clamps
Measuring Range: 0,05 A to 5 ARMS
Accuracy: ±3% ±1 mV (from 0,05 A to 0,5 A),±1,5% ±1 mV (from 0,5 A to 1 A), ±1%(from 1 A to 5 A)
DC Voltage Measurement
Range: ±300 V
Typical accuracy: ±0,5% RDG ±0,5% FS
Guaranteed accuracy: ±1% RDG ±1% FS
Handset Power Supply
12 V DC, 1 A
Inline Power Supply
Input: 90 – 264 V AC, 50/60 Hz
Internal Battery Supply
2 x 3,7 V, 2900 mAh rechargeable Li-ion battery
8 hours under normal usage
Environmental conditions
Operating temperature:-10 ºC to + 55 ºC / 14 ºF to +131 ºF
Storage & transportation:-40 ºC to + 70ºC / -40 ºF to +158 ºF
Humidity 5 % - 95 % relative humidity,non condensing
