Vanguard EZCT-2000 - Manual (Page 20)

EZCT-2000 USER’S MANUAL REV 3
16
e. If the selected test included an excitation test, the following screen will be displayed:
Select the maximum test current for the excitation test by pressing the corresponding
key (
[1]
-
[6]
).
NOTE
Most CT’s will saturate before the excitation current reaches 1A. To reduce
stress on CT’s, a maximum test current of 1A is recommended.
f. If the selected test included a ratio test, the following screen will be displayed:
1. YES
Press the [1] key if you would like to enter the CT nameplate values. The
following screen will be displayed:
Type the first number using the keypad.
You can press the [CLEAR] key to restart a field entry if necessary.
Press the
[ENTER]
key. The following screen will be displayed:
Type the second number using the keypad. The screen will be updated as shown:
Press the [ENTER] key. Continue to step g.
ENTER PLATE RATIO:
1000 : 5.0
ENTER PLATE RATIO:
1000 : 0.0
ENTER PLATE RATIO:
0 :
XFMR NAME PLATE RAT.
1. YES
2. NO
SET TEST CURRENT:
1. 0.2A 2. 0.5A
3. 1A 4. 2A
5. 5A 6. 10A