Vanguard CT-7000 - Manual (Page 10)

CT-7000 Operating Instructions
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personal computer. A Windows-based Breaker Analysis Software is supplied with each CT-7000.
The software is compatible with Windows 95, 98, Me, 2000, NT and XP. The software allows the
user to:
n Remotely time circuit breakers from a personal computer.
n Retrieve timing shots stored in the CT-7000.
n Down-loading circuit-breaker test plans to CT-7000.
n Recall timing shots from a hard drive for reanalysis at an office PC.
2.9 Timing Shots Storage Capabilities
The CT-7000 uses Electrically Erasable Programmable Read-Only-Memory (EEPROM) to
store timing-shot data. Unlike other media, EEPROMs are immune to temperature, shock and
humidity. Stored shots can be recalled to reanalyze the test data, to reprint test reports or to
transfer data to a personal computer for record keeping. Up to 100 timing shots can be stored in
the EEPROMs. The number of shots stored in the EEPROMs may vary depending upon the size
of the shot records.
2.10 Breaker Test Plan Storage Abilities
Up to 99 breaker’s test plan can be stored in the CT-7000. Test plans comprise breaker
specifications (i.e., stroke, velocity, contact time). By recalling and using a test plan, operators can
immediately test breakers and view a pass/fail report (made by comparing test performance with
specifications in the test plan.
A breaker test plan can be created by using the Breaker Analysis Software (supplied with each
CT-7000). Test plan is then loaded into the CT-7000 via the RS-232C serial port.
2.11 Diagnostic Capabilities
The CT-7000 is designed with self diagnostic capability to check the integrity of the
electronics. Self testing of the contact cable hook-up and transducers permits the user to examine
the CT-7000‘s components whenever verification is required.
2.12 CT-7000 Display and Control Switches
An alphanumeric keypad enables the user to operate the CT-7000 and to enter the breaker’s
nameplate data such as: the substation name, breaker model and other descriptions. A 4-line by
20-character LCD readout displays user messages and menus. The LCD is backlit to allow
messages can be viewed in low light conditions.