Vanguard EZCT-2000C Plus - Manual (Page 8)

EZCT-2000C USER’S MANUAL REV 1
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Internal Test Plan Storage
The EZCT-2000C can store up to 128 CT test plans in Flash EEPROM. A test plan is comprised of
the excitation test voltage, current range selection, CT nameplate ratios, and CT winding
terminal combinations (X1 to X5) for each test and also includes the insulation test definition.
Up to 10 test definitions can be stored per test plan. The ability to store test plans makes CT
testing an extremely simple process. To perform a test, the EZCT-2000C is connected to the CT
terminals and a test plan is selected to run.
Creating test plans for the EZCT-2000C is also a simple process. A test plan can be created using
the EZCT-2000C’s keypad or can be created on a PC (with provided software) and then
downloaded to the EZCT-2000C via the USB port or Bluetooth. For added convenience, test
plans can also be copied from a USB Flash drive to the EZCT-2000C via the USB Flash drive
interface.
External Data Storage
The EZCT-2000C features a USB Flash drive interface that makes it very convenient to store and
transfer test records and test plans. By using a USB Flash drive, test records and test plans can
be quickly transferred between a computer and the EZCT-2000C without the need to connect
the unit to the computer.
1.3 EZCT-2000C Plus Features
CT Winding Insulation Resistance Test Feature
The EZCT-2000C Plus can also measure the insulation resistance of the CT’s secondary winding
using a test voltage up to 1000 Vdc. The DC winding resistance reading range is from 2 to 500
Mega-ohms. The insulation resistance test results are displayed and printed on the report.
CT Burden Test
The EZCT-2000C Plus can measure the CT’s actual connected burden by injecting a 1A or 5A test
current into the load. The CT burden measurements (Voltage, current, Cos
ϕ, and burden
impedance) are displayed on the screen and printed on the test report. This important test
verifies the actual CT measured burden before putting the CT in service, thus avoiding any
potential configuration conflicts.
Current Source
The EZCT-2000C Plus offers an optional programmable current source (0-20A, 0-15Vac) that can
be used to verify CT loads. The on-time timer and output current are displayed on the LCD
screen.