S&C 6800 Series User Manual

Switch Control Setup
The time selected for the next breaker operation after the instant reclose must be
longer than the time chosen for the First Reclose Qualification Time setting by
250 ms to allow the subsequent operation to qualify as the first recloser operation count.
Therefore, for reliable operation, the First Reclose Qualification Time setting MUST
be set to a value that is at least 250 ms shorter than the next breaker operation.
(Enhanced) First-Reclose Qualification Time (Only for SG6801 Software)
(Range 0.1 second to 60.0 seconds; Step: 0.1; Default: Disabled)
When a Reclose Counts to Sectionalizer Trip operation occurs, the Fault Detected
Counts value is set to 1, and the 3-Phase Voltage Loss Sectionalizing mode is set to
the No setting, the First-Reclose Qualification Time setting can be used to time coor-
dinate multipole sectionalizers with an IntelliRupter® PulseCloser® Fault Interrupter.
Examples:
FRQT = First-Reclose Qualication Time; S1 = Source 1; IR1 = IntelliRupter fault
interrupter 1,
SM1 = Scada-Mate switch 1; SM2 = Scada-Mate switch 2; NC = Normally Closed; Lx =
Line segment x where x = 1, 2, or 3.
Settings:
SM1 FRQT = 9 seconds
SM2 FRQT = 3 seconds
Both SM have Recloser Counts to Sectionalizer Trip, Fault Detected = 1.
Both SM have 3-Phase Voltage Loss Sectionalizing set to the No setting.
IR1 Test open intervals = 1 second for Test 1, 5 seconds for Test 2, 10 Seconds for Test
3, and 30 seconds for Test 4.
Fault in L3
S1(B)-------IR1 (NC)-----(L1)------SM1 (NC)-----(L2)------SM2 (NC)--X---(L3)-----
t = 0 all devices see the fault, IR1 trips and interrupts the fault.
t = 1 second IR1 pulse tests; fault still present, so IR1 remains open.
t = 3 seconds later, SM2 opens.
t = 5 seconds IR1 pulse tests; detects no fault, and closes and holds.
Fault in L2
S1(B)-------IR1 (NC)-----(L1)------SM1 (NC)-----(L2)---X--SM2 (NC)-----(L3)-----
t = 0 IR1 and SM1 see the fault, IR1 trips and interrupts the fault.
t = 1 second IR1 pulse tests, fault still present so IR 1 remains open.
t = 5 seconds IR1 pulse tests, fault still present so IR1 remains open.
t = 9 seconds SM1 opens.
t = 10 seconds IR1 Pulse tests, no fault and closes and holds.
Recloser Counts to Sectionalizer Trip, Fault Detected
This is the number of three-phase voltage losses associated with fault current that will
cause the control to open the line switch. The switch control trips open the line switch
when all of the following are true:
• The switch control detects a number of three-phase voltage losses equal to the
Recloser Counts to Sectionalizer Trip, Fault Detected setpoint
• Sectionalizing is enabled
• An overcurrent fault preceded the number of voltage losses set by the Fault Current
Required before First/All Voltage Loss(es) setpoint
For example, if the applicable value is 3, the switch control trips open the line switch
on the third qualifying voltage outage. (Range: 1-9; Step: 1; Default 3)
40 S&C Instruction Sheet 1045-530

S&C 6800 Series Specifications

General

Brand	S&C
Model	6800 Series
Category	Controller
Language	English