Vanguard CT 7000 - HVTEST South Africa

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CT-7000 The Model CT-7000 Series 2 is a third generation, stand-alone, microcomputerdriven EHV Circuit-Breaker Analyzer. It is inexpensive and easy to use. The CT- 7000 is available in models with 3 dry contacts (CT7000-3), 6 dry contacts (CT- 7000-6), or 12 dry-contact inputs (CT-7000-12). The CT-7000 fully analyzes circuit-breaker performance: contact time, stroke, velocity, over-travel, and contact wipe. Contact-motion analysis includes: Open, Close, Open-Close, Close-Open, and Open-Close-Open. The CT-7000 timing window is selectable: 1-second, 10- second, or 20-second periods. The 10-second and 20-second timing windows allow timing of long duration events (Circuit-Switcher contacts). Contact Timing Inputs Breaker contact timing uses dry-contact input channels. Each contact-input channel can detect main contact and insertion-resistor contact times (displays milliseconds and cycles). Voltage Monitoring Inputs One analog voltage input channel is dedicated to monitoring circuit-breaker dc power supply or coil voltages 0 to 300 volts, dc or peak ac. One digital voltage input channel allows users to monitor voltage on/off status of an A/B switch. Trip/Close Current Monitoring A built-in Hall-effect current sensor records Trip/Close current level and duration. The breaker’s operate-coil current waveform duration (effectively, a performance "fingerprint" or "current profile") can be used as a diagnostic tool for analysis of a breaker’s performance. Breaker Stroke and Velocity Three travel transducer digital channels let the CT-7000 measure stroke, over-travel, and bounce-back. Unlike other types of transducers, the digital transducer requires neither calibration nor setup. A breaker contact-velocity calculation is based on a contact’s travel distance over a period of time, which is defined by the breaker manufacturer’s specifications. A special feature lets users "slow-close" a breaker and produce a test result report. Resistor Type Transducer Input Channel One optional resistor type input channel is also available with the CT-7000. This input channel allows the CT-7000 to interface directly with resistive type transducers (optional). The transducer resistance ranges from 200 ohm to 10K Ohm. Timing Record Storage Capabilities The CT-7000 uses Flash Electrically Erasable PROMs (EEPROMs) to store timingrecord data. Unlike other storage media, EEPROMs are immune to shock, temperature, and humidity. Stored timing records can be recalled by users to re-analyze test data, to print copies, or to transfer data to an IBM-compatible PC for record keeping. Up to 100 timing records can be stored in EEPROMs. Breaker Test Plan Up to 99 circuit-breaker test plans can be stored in the CT-7000. Test plans comprise all circuit-breaker performance specifications (stroke, velocity, contact time). By recalling a test plan, the user can immediately test a breaker and view a pass/fail report (made by comparing actual performance with the specifications listed in the stored test plan). A user does not need to look-up the breaker specifications to compare with the test results to determine if the breaker passed the performance tests. Test plans can be downloaded to the CT-7000 via a USB or RS-232C port. Breaker Initiate Features A built-in solid-state initiate device lets users operate the breaker from the CT- 7000. The operational modes include: Open, Close, Open-Close, Close-Open, and Open-Close-Open. Multiple operations (e.g., Open-Close, Open-Close- Open) can be initiated by using programmable delay time or by sensing the breaker’s contact condition. Diagnostic Capabilities The CT-7000 can perform diagnostics on its internal electronics. Self testing of transducer and contact-test cables lets users check out the Timer whenever verification is required. Computer Interface The CT-7000 can be used in the stand-alone mode or computer controlled mode. USB and RS-232C Ports allow an IBM-PC compatible computer to control the CT-7000. From the PC, circuit breakers can be timed and users can retrieve timing shots saved in the CT-7000 flash EEPROM. A Windows ® XP-based Breaker-Analysis software lets users time circuit breakers, retrieve test-shot data stored in the computer’s hard-drive, re-analyze the stored data, and generate reports in the office. Test reports can be exported to Excel, allowing the user to generate customized test-result reports. Users may also create a circuitbreaker database library. Additionally, users can create circuit-breaker test plans to be downloaded to the CT-7000. User Interface An alpha-numeric keypad lets users enter breaker ID and control functions. A 4- line by 20-character LCD readout displays user messages. The LCD is back lighted so messages can be viewed in low light levels. A display contrast control is located on the front panel. Built-in Thermal Printer A built-in thermal printer prints the breaker contact analysis results in both tabular and graphic formats on 4.5-inch-wide thermal paper. Digital Circuit Breaker Analyzer H.V. TEST (PTY) LTD 3 Gaiety Ave, Robindale, Randburg, South Africa, 2010 Tel: +27(11) 782 1010 Fax: +27(11) 782 2770 P.O. Box 651287, Benmore, 2010 Email: sales@hvtest.co.za Website: www.hvtest.co.za
lyze Contact Timing Channel Voltage Input Channels Linear Transducer RS-232C Port Trigger Input Connector USB Port Resistor Type Transducer Connector Digital Transducer Connector Thermal Printer 4x20 Backlit LCD Display Breaker Initiate Output 16-Key Membrane Keyboard Breaker Initiate Arm Switch H.V. TEST (PTY) LTD 3 Gaiety Ave, Robindale, Randburg, South Africa, 2010 Tel: +27(11) 782 1010 Fax: +27(11) 782 2770 P.O. Box 651287, Benmore, 2010 Email: sales@hvtest.co.za Website: www.hvtest.co.za
Page 1: H.V. TEST (PTY) LTD 3 Gaiety Ave, R
Page 5: FEATURES • Full Breaker Tabulated

Vanguard CT 7000 - HVTEST South Africa

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