The DVPower CAT-H is a portable circuit breaker analyzer and timer designed to quickly and accurately assess the condition of circuit breakers with single-phase tripping in low-, medium-, and high-voltage substations, as well as in industrial environments. With a compact, ergonomic design weighing approximately 1.6 kg and a 5.7-inch color touchscreen, this instrument records both operating times of main and auxiliary contacts, as well as opening and closing coil currents, pre-insertion resistor values, and substation battery voltage, enabling on-site trend analysis with superimposable numerical and graphical results. Thanks to its internal lithium-ion battery with up to 8 hours of runtime and its integrated coil control capability, the CAT-H offers an effective solution for maintenance testing, commissioning, and diagnostics of electrical circuit breakers.
Frequently Asked Questions
What types of switches can the CAT-H test?
The CAT-H is designed to test single-pole circuit breakers in medium- and high-voltage electrical power systems, making it suitable for circuit breaker maintenance and diagnostics in substations and industrial settings.
What parameters and measurements does the CAT-H record during testing?
The device measures and records:
Operating times of main and auxiliary contacts
Synchronization of contacts and sequence timings
Coil open and close currents
Resistance of pre-insertion resistors (if present)
Contact rebound times
DC battery voltage
This data is presented in both numerical and graphical formats to facilitate local analysis.
How does the CAT-H start testing, and what operating modes does it support?
Tests can be initiated by a predefined delay time or by an external signal from current clamps connected to the circuit breaker coil, and the CAT-H supports operating modes such as Open (O), Close (C), and Open-Close-Open sequences to evaluate different operating conditions.
What are the advantages of the touchscreen and the graphical display of results?
The 5.7-inch color touchscreen displays clear data even in bright daylight, and the ability to overlay up to four graphical records facilitates on-site comparative analysis of multiple test cycles or configurations, identifying atypical behavior in contacts or coils.
How are the results exported and analyzed off-site?
Test results can be downloaded via Bluetooth to a PC for more detailed analysis using the DV-Win software, which allows users to generate comprehensive reports, compare trends, and archive test data for predictive maintenance.
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