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2 PRODUCT DESCRIPTION
2.9 I2 COUNTER (AVAILABLE ONLY IN OPTION 2 MODELS)
2
2.9I
COUNTER (AVAILABLE ONLY IN OPTION 2 MODELS)
This counter is intended for breaker maintenance. It accumulates the breaker aging produced by a trip or a breaker
opening. In order to incorporate the breaker history, in the case of second-hand breakers, the system allows assigning an
initial value to the accumulated Amps and to the number of opening operations.
2
There is one I
counter for the three phases, where every time a trip or a breaker opening is produced, the counter value is
increased (in secondary value). If the tripping current is lower than the rated current, the accumulated value will be the
rated current.
2
2
When the counter reaches or exceeds a limit value (setting), an I
ALARM signal will be produced in the unit status, and the
corresponding event will be generated.
There is also a Breaker Opening counter available, for informational purposes only.
2
The I
counter, and the number of openings counter are stored in capacitor backed up RAM memory.
2
2
The setting associated to the I
COUNTER is the limit value of the counter that will produce the I
t ALARM. This setting is
included in the ADVANCED SETTINGS group, and is described in detail in the SETTINGS section.
2
Both the I
and the Number of Openings counters can receive an operation command to modify their contents. From the
2
ENERVISTA MII SETUP program, a valid value can be set for any of these two counters. The valid range for the I
counter
is from 0.000 to 999.000, and for the "Number of Openings" counter it is from 0 to 999.
From the keypad and display it is only possible to set both fields to zero.
GEK-106237P
MIFII Digital Feeder Relay
2-15
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