Schweitzer Engineering SEL-351P - Defeat the Reclosing Relay; Close Logic Can Still Operate When the Reclosing Relay Is Defeated

6-14 Close and Reclose Logic Date Code 990215
SEL-351P Manual Técnico
Defeat the Reclosing Relay
If any one
of the following reclosing relay settings are made:
• Reclose enable setting E79 = N.
• Open Interval 1 time setting 79OI1 = 0.00.
then the reclosing relay is defeated, and no automatic reclosing can occur. These settings are
explained later in this section. See also the settings sheets at the end of Section 9: Setting the
SEL-351P Recloser Control.
If the reclosing relay is defeated, the following also occur:
• All three reclosing relay state Relay Word bits (79RS, 79CY, and 79LO) are forced to
logical 0 (see
Table SECTION 6: .1).
• All shot counter Relay Word bits (SH0, SH1, SH2, SH3, and SH4) are forced to
logical 0 (the shot counter is explained later in this section).
• The front-panel LEDs RS, CY, and LO are all extinguished – a ready indication that the
recloser is defeated.
Close Logic Can Still Operate When the Reclosing Relay is Defeated
If the reclosing relay is defeated, the close logic (see
Figure SECTION 6: .1) can still operate if
SEL
OGIC Control Equation circuit breaker status setting 52A is set to something other than
numeral 0. Making the setting 52A = 0 defeats the close logic and
also defeats the reclosing
relay.
For example, if 52A = IN101, a 52a circuit breaker auxiliary contact is connected to input IN101.
If the reclosing relay does not exist, the close logic still operates, allowing closing to take place
via SEL
OGIC Control Equation setting CL (close conditions, other than automatic reclosing). See
Close Logic earlier in this section for more discussion on SEL
OGIC Control Equation settings
52A and CL. Also see Optoisolated Inputs in Section 7: Inputs, Outputs, Timers, and Other
Control Logic for more discussion on SEL
OGIC Control Equation setting 52A.