Vanguard Instruments Company CT-6500, Руководство по эксплуатации

Страница: 10 / 69

CT-6500 Operating Instructions
3
software allows the user to:
n
Remotely time circuit breakers from a personal computer.
n
Retrieve timing shots stored in the CT-6500.
n
Recall timing shots from a hard drive for reanalysis at an office PC.
2.9 Timing Shots 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 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 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 user 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 backlit to allow
messages can be viewed in low light conditions.
3.0 Test Result Tabulation
3.1 Electrical Measurement Results
Under the Time Travel Mode, each CT-6500 contact channel provides the following test
results:
n
Contact Close time
n
Contact Open time
n
Insertion Resistor Contact Open and Close times
n
Contact Bounce time
n
Resistor On time
n
Contact Spread time