Breaker diagnosis in the palm of the hand
CAB
Circuit breaker testing
CAB
Handheld circuit breaker analyzer and timer
Timing, synchronism and coil currents on breakers with one break per phase.
Product overview
Two complementary handheld devices
The handheld series comprises the CAT-P (1.4 kg) and the CAT-H (1.6 kg). Both time the main contacts with one break per phase, record the opening and closing coil currents, the substation battery voltage and the auxiliary contacts, and measure the resistance of the pre-insertion resistors.
Each with its own speciality
The CAT-H integrates coil control to operate the breaker from the device itself; the CAT-P offers it through an external module and adds the online first trip test based on the CTs' secondary currents.
Main features
- Internal Li-ion battery for 8 hours of testing (user replaceable on the CAT-P).
- 5.7-inch colour touch screen readable in full sunlight.
- Overlay of up to 4 graphical records to compare operations.
- Internal memory for over 30,000 results.
- O, C, CO, O-C, C-O and O-C-O operations with delay or contact-position sensing.
- Direct download to USB memory and PC communication.
- IP40 protection rating in 310 × 170 × 58 mm.
Applications and software
Applications
- LV, MV and HV breakers with one break per phase.
- First trip test with the installation in service (CAT-P).
- Verification of control circuit wiring.
- Pole synchronisation and bounce times.
- Maintenance contractors and industrial environments.
PC software for control and analysis
The included PC software downloads the tests over Bluetooth or USB, presents the curves with cursors and zoom, overlays several records for comparison, converts units automatically and exports the results for reports.
Measurement triggers for every case
Recording can start from the coil control channel, from the DC current clamp or from the DC voltage channel, depending on whether the operation is initiated from the control room, a local switch or the test device itself.
CAB — MEASUREMENT DATA
| Main contact inputs | 3 (1 per phase); closed ≤ 10 Ω; pre-insertion 10 Ω – 5 kΩ; open ≥ 5 kΩ |
|---|---|
| Time resolution | 0.05 to 10 ms depending on test duration (sampling up to 20 kHz) |
| Time accuracy | 0.05% of reading ± resolution |
| Coil current | ±35 A DC to 5 kHz; 30/300 A clamps (300 A RMS / 450 A peak) |
| DC voltage | ±300 V; typical ±0.5% ±0.5% FS; guaranteed ±1% ±1% FS |
| AC clamps for first trip (CAT-P) | 0.05 – 5 A RMS; ±3% to ±1% by range |
| Coil control (CAT-H) | 2 channels; ±300 V DC/AC peak; ±35 A |
| Memory | Over 30,000 numerical and graphical results |
The contact circuit works with 20 V DC and 50 mA open-circuit values. Specifications valid at +25 °C with standard accessories.
CAB — TECHNICAL SPECIFICATIONS
| CAT-P | CAT-H | |
|---|---|---|
| Weight | 1.4 kg | 1.6 kg |
| Coil control | Via external module (optional; 0.6 kg) | Built-in (2 channels, ±300 V, ±35 A) |
| Online first trip test | Yes (AC clamps 0.05 – 5 A) | — |
| Internal battery | 2 × 3.7 V, 2900 mAh; user replaceable | 2 × 3.7 V, 2900 mAh |
| Display | 5.7-inch colour touch screen | 5.7-inch colour touch screen |
| Dimensions | 310 × 170 × 58 mm | 310 × 170 × 58 mm |
Common: 8-hour autonomy; 12 V DC / 5 A adapter with 90 – 264 V AC input; memory for over 30,000 results; IP40; operation -10 to +55 °C; storage -40 to +70 °C; humidity 0 – 95% non-condensing. Standards: safety EN 61010-1 (Directive 2014/35/EU); EMC EN 61326-1 (Directive 2014/30/EU); installation category II; pollution degree 2. Specifications valid at +25 °C.