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Breaker failure to
open
Breaker failure to open
enable
Fail to open timer
Cold load pickup
Cold load pickup
enable
Pickup time
Drop out time
Constant. 50P pickup
Constant 51P pickup
COMMENTS ON SETTINGS:
1. The ACTIVE TABLE setting, in the Advanced General Settings, selects which of the two settings tables is active at
a given time. Its default value is 1 (TABLE 1).
2. The procedure to set the Phase and Ground TOC (Time Delayed Overcurrent) functions (51P / 51N) is the same
for both functions: First, the pickup value must be set (PICKUP); Then, using the CURVE TYPE (current versus
time tripping characteristic curve), the type of time delay preferred is selected, either DEFINITE TIME, or any of
the three inverse curves; If the choice is any of the inverse curves (Inverse, Very Inverse or Extremely Inverse),
then the relay takes into account the TIME DIAL setting, to identify which of the curves in the family (there are 195
different curves for each curve type, depending on the Time Dial Selected) must use; If the current versus time
tripping characteristic is DEFINITE TIME, then the Time Dial setting is ignored and the time delay used is the
specified in DEFINITE TIME setting.
5.4
TIME SYNCHRONIZATION
MIF relay includes an internal clock to time tag events. This clock can be synchronised with the computer clock using
the ENERVISTA MII SETUP software program. It can also be set to a given Date and Time using the faceplate
keypad.
GEK-106273L
PRODUCT DESCRIPTION
ENERVISTA MII
SETUP
Breaker failure to
open
Breaker failure
BF ENABLE
function
Fail to open timer
ENERVISTA MII
SETUP
Cold load pickup
Cold load pickup
CLP ENABLE
function
T IN
T OUT
K 50P
K 51P
MIF Digital Feeder Protection
5.3.9.
HMI
DEFAULT
BF
NO
BF TIME
400
HMI
DEFAULT
CLP
NO
T IN
2
T OUT
2
K 50P
1
K 51P
1
BREAKER FAILURE TO OPEN
RANGE
Y/N
50-999 ms
5.3.10.
COLD LOAD PICKUP
RANGE
Y/N
0-60 s
0-60 s
1-5
1-5
STEP
NA
1 ms
STEP
NA
0.001 s
0.001 s
0.01
0.01
5-37
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