Basler Electric BE1-79M - Manual (Page 29)

9170100990 Rev N BE1-79M Functional Description 3-5
cycle time at power loss are 00, the least significant digit is seen as 9 on power restoration. If the relay is
in RESET when power is lost and logic switch S23 power-up to reclose function is enabled, the relay will
close the breaker during power-up if RI or PI is present.
Outputs
Output commands from the microprocessor light LED indicators and are amplified by driver circuits to
energize the coils of the output relays. Individual output contacts and their functions are listed in Table
3-2.
Table 3-2. Output Contacts
Output Contacts Function
Reclose
Normally open contacts are closed to energize the closing coil of the controlled
circuit breaker.
Lockout Normally open contacts are closed to indicate lockout.
Relay Fail
Normally closed contacts will be closed to indicate a malfunction of the
microprocessor or power supply. (These contacts open on the completion of the
power-up sequence.)
Reclose Fail
(Optional)
Normally open contacts are closed to indicate that the breaker has not
responded to the reclose command output in the allotted time.
Pilot (Optional)
Normally open contacts are closed to energize the closing coil of the controlled
circuit breaker on the first reclosure attempt of a pilot initiated reclosing
sequence.
Pre-lockout (Optional) Normally open contact that is closed to signify that the last programmed reclose
attempt is taking place.
Instantaneous Trip
Enable (Optional)
Normally open or normally closed contacts change state to enable an
instantaneous tripping scheme during the reclosing sequence. These contacts
are controlled by the front panel switches and the selected reclosing sequence.
A normally open ITE will close to enable instantaneous tripping, and a normally
closed ITE will open to enable instantaneous tripping.
Block Load Tap
Changer (Optional)
Normally closed or normally open contacts change state to disable automatic
load tap changer operation during a reclosing sequence.
Power Supply
Basler Electric enhanced the power supply design for unit case relays. This new design created three,
wide range power supplies that replace the four previous power supplies. Style number identifiers for
these power supplies have not been changed so that customers may order the same style numbers that
they ordered previously. The first newly designed power supplies were installed in unit case relays with
EIA date codes 9638 (third week of September 1996). A benefit of this new design increases the power
supply operating ranges such that the 48/125 volt selector is no longer necessary. Specific voltage ranges
for the three new power supplies and a cross reference to the style number identifiers are shown in Table
3-3.
Relays with a Y type power supply also have a field selectable link (J2) on the contact sensing board to
match the power supply nominal input voltage of 48 Vdc or 125 Vdc. The contact sensing functional
description at the beginning of this section described the field selectable link J2.