Field testing of circuit breakers often requires a solution that is easier to carry and faster to deploy than a conventional full-size analyzer. The DV Power CAT Handheld Series is designed for exactly that role. DV Power describes this series as a handheld circuit breaker analyzer and timer developed for situations where it is not practical to use conventional robust circuit breaker analyzers. It is intended for testing circuit breakers with one break per phase and is positioned for use in low-, medium-, and high-voltage substations as well as industrial environments.
One of the biggest strengths of the CAT Handheld Series is portability without giving up important test functions. DV Power states that the series includes two models, CAT-P and CAT-H, both built with a 5.7-inch color touch-screen display for visibility in both dark locations and bright sunlight. The instruments also include an internal Li-Ion battery with up to 8 hours of testing without recharging, which makes them practical for field crews who need mobility and long working time on site.
The CAT Handheld Series is built to capture the core results maintenance teams need during breaker assessment. DV Power says the instruments record main contacts operating times, contact synchronization, sequence time, pre-insertion resistor resistance, open and close coil currents, main contacts bounce time, auxiliary contact time, and DC voltage. This gives users a compact solution for evaluating key circuit breaker operating parameters without moving to a larger analyzer platform.
Another practical benefit is support for multiple operating sequences. DV Power notes that operations such as Open-Close and Open-Close-Open can be initiated either by using a predefined delay time or by a trigger signal from current clamps connected to the breaker coil. That flexibility is valuable for field technicians who need to perform realistic breaker operation sequences under different testing conditions.
The difference between the two models is also important when selecting the right instrument. According to DV Power, the CAT-H is capable of coil control, while this feature is optional on the CAT-P. On the other hand, the CAT-P can perform the First Trip test, which DV Power specifically contrasts with the CAT-H. This means the best choice depends on whether the user values coil control capability or needs First Trip testing in a handheld platform.
For on-site troubleshooting, result presentation is another strong point. DV Power states that both instruments display numerical and graphical results, and users can overlay up to 4 records in graphical form for quick comparison and analysis of possible defects. This can help technicians identify inconsistencies and trends directly in the field instead of waiting to return to the office before making an initial assessment.
Data handling is also designed for practical follow-up work. DV Power says test results can be transferred to a PC via Bluetooth for more detailed analysis using DV-Win software. That gives the CAT Handheld Series a useful combination of fast field testing and deeper office-based review, which is important when documenting breaker condition or comparing results over time.
From a specification standpoint, DV Power lists the CAT Handheld Series with 1 break per phase, 2 coil control channels, 1 analog channel, a 145 mm / 5.7-inch touch screen, and battery life up to 8 hours. These specifications show that the platform is focused on portability and practical field application rather than trying to replace every feature of a large stationary breaker analyzer.
For utilities, industrial plants, and breaker service teams, the real value of the CAT Handheld Series is convenience combined with meaningful diagnostic capability. When the job does not justify carrying a larger analyzer, a handheld unit that still records timing, synchronization, coil current, auxiliary contact time, and DC voltage can be a very efficient solution. This is especially useful for field inspections, routine maintenance, and quick breaker assessments where mobility and speed matter. That practical positioning is exactly how DV Power presents the CAT Handheld Series on its product page.
Overall, the DV Power CAT Handheld Series is a strong option for users who need a compact and ergonomic circuit breaker analyzer for field work. With two model choices, sunlight-readable touch display, long battery life, Bluetooth data transfer, and the ability to record the key parameters of breaker operation, it offers a practical balance of portability and diagnostic value for one-break-per-phase circuit breaker testing.
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