Startco Engineering Ltd.
Page 18
FPU-16 Feeder Protection Unit
Rev. 1
Pub. FPU-16-M, November, 1997
Downloaded from the Internet, see Disclaimer.
When I
2
t IMMEDIATE RESET is selected in Mode 5, pressing RESET in Mode d
will set I
2
t to 0%.
The pre-trip percent I
2
t value can be recalled by pressing ENTER.
Percent I
2
t:
Range......................................... 0 to 100%
Resolution .................................. 1%
Trip Value ................................... 100%
Reset Value ................................ 30%
Time-to-Reset:
Range......................................... 0 to 85 minutes
Resolution .................................. 1 minute
3.14
MODE E — EARTH LEAKAGE
This mode is used to display earth-leakage current. For currents above 999 A,
the last value digit is replaced by E to indicate an extended range. To obtain the
actual value, multiply the reading by 100. For example, 10E is read as 1000 A.
The pre-trip earth-leakage value can be recalled by pressing ENTER.
Range................................................... 0 to 1.25 x I
e
Accuracy ............................................... ± 3% I
e
Resolution With:
EFCT-1 or EFCT-2 ...................... 0.02 A
5-A- or 1-A-Secondary CT ........... 1 A for I < 1000 A,
100 A for I
1000 A
3.15
MODE F — OPERATION COUNTER
The counter increments by one each time an external contact closes. The
maximum count is 65535 and the counter returns to zero on the next count.
The value digits display the three least-significant digits of the counter. When
ENTER is pressed, the two most-significant digits are displayed.
To reset the counter, defeat the program-change lockout by connecting FPU-16
terminals 20 and 21 and press RESET and ENTER simultaneously in Mode F.
