Vanguard CT-6500 S2 - Manual (Page 10)

CT-6500 Series 2 Operating Instructions
9
breaker's AC or DC control circuit. . The CT-6500 initiate circuit is capable of carrying up to 30
amperes. Separate 5 Ampere, fast-blow fuses protect each trip and close circuits. An interlock
“ARM” switch action is required by the operator to operate the initiate circuit.
2.7 Built-in Thermal Printer
The breaker's contact analysis results can be printed in both tabular and graphical formats by
a built-in, 4.5 inch wide, thermal printer. Refer to paragraph 7.5 for ordering thermal paper.
2.8 Computer Interface Capabilities
Built-in, RS-232C and USB ports allow the CT-6500 to be interfaced with an IBM-compatible
personal computer. A Windows XP Circuit Breaker Analyzer software is supplied with each CT-
6500. The software allows the user to:
- Control CT-6500 from a personal computer.
- Retrieve timing records stored in the CT-6500.
- Transfer circuit breaker test plans to CT-6500.
- Recall timing records from a hard drive for reanalysis at an office PC.
2.9 Timing Records Storage Capabilities
The CT-6500 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 records can be stored
in the EEPROMs. The number of test records stored in the EEPROMs may vary depending upon
the size of the records.
2.10 Diagnostic Capabilities
The CT-6500 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-
6500‘s components whenever verification is required.
2.11 CT-6500 Display and Control Switches
An alphanumeric keypad enables the users to operate the CT-6500 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 back-lighted to allow
messages to be viewed in low light conditions.
3.0 Test Result Tabulation
3.1 Timing Test Measurement Results
In the Time Travel Mode, each CT-6500 contact channel provides the following test results:
- Contact Close time
-
Contact Open time
- Insertion Resistor Contact Open and Close times
-
Contact Bounce time
- Resistor On time
- Contact Spread time