Principles Of Operation; Inputs - GE MLP1000 Manual

225 ZONE II REACH
You may not set this setting to a value greater that set for 226 ZONE III
REACH.
228 ZONE I TRIP TIMER
You may not set this setting to value greater that set for 230 ZONE III TRIP
TIMER minus 20 ms.
229 ZONE II TRIP TIMER
You may not set this setting to value greater that set for 230 ZONE III TRIP
TIMER minus 20 ms.
Recloser settings:
303 TIME DELAY FOR THE FIRST RECLOSING ATTEMPT
304 TIME DELAY FOR THE SECOND RECLOSING ATTEMPT
305 TIME DELAY FOR THE THIRD RECLOSING ATTEMPT (MLP2000 and
MLP3000)
The reclosing time must not be set to a time less than the opening time of the
installed breaker; by doing so reclosing procedures cannot be performed since
the recloser, the recloser will be blocked at the end of a reclosing time and the
breaker will be closed instead of open.
308 RESET TIME: (All models)
When the setting 208 PROTECTION SCHEME has been set too ZONE I
EXTENSION, you may not set this timer to a value less than that set for 229
ZONE II TRIP TIMER.

4. PRINCIPLES OF OPERATION

4.1 INPUTS

The external connections of the MLP protection system can be seen in diagrams
3.1, 3.2, 3.3 and 3.4 (MLP1000), 3.5, 3.6,3.7, and 3.8 (MLP2000), 3.9, 3.10, 3.11, and
3.12 (MLP3000).
Digital Inputs
The protection system includes the following digital inputs:
CC-1: Breaker status (52/b)
CC-2: External trip block ( to the protection system)
CC-3: Line pick up (to the protection system)
CC-4: Reclosing initiate (to the recloser /MLP2000 and MLP3000)
GEK-98846A
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