1-30
Factory-Set Logic
Date Code 990215
SEL-351P Manual Técnico
•
Close capacitor charged – supervises FECHAR operator control and serial port CLOSE
command
Other close logic details in Figure SECTION 1: .20:
•
The BLOQUEIO operator control also supervises other front-panel operator controls
(see Figure SECTION 1: .37, Figure SECTION 1: .38, Figure SECTION 1: .39, Figure
SECTION 1: .41, Figure SECTION 1: .42, and Figure SECTION 1: .43)
•
Hot line tag also supervises auto-reclosing (see Figure SECTION 1: .25)
•
The trip and close capacitor charged conditions also supervises auto-reclosing (see
Figure SECTION 1: .30)
•
No standing close is possible with this logic. The FECHAR operator control (Relay
Word bit PB8) and serial port CLOSE command (Relay Word bit CC) pulse for only
one processing interval (one quarter cycle) when activated. Also, in referenced Figure
6.1, SEL
OGIC
Control Equation setting CL is rising edge triggered. Thus, if the
BLOQUEIO operator control (Relay Word bit LT4) or hot line tag (Relay Word bit
LT7) are turned ON or OFF, no surprise close takes place – there is no standing close
condition waiting to get through.
FECHAR operator control
pushbutton (pulsed output -
see Figure 1.35)
BLOQUEIO operator
control OFF
(see Figure 1.44)
Hot line tag OFF
(see Figure 1.49)
Serial port
CLOSE command
Close
Conditions
(other than
auto-
reclosing)
SEL
OGIC
Setting
CL
Input Into
Close Logic
(see Figure
6.1)
DWG: MP351P018
Relay
Word
Bits
PB8
LT4
LT7
CC
Remote
Local
TRCAP
CLCAP
Trip capacitor
charged
Close capacitor
charged
Figure SECTION 1: .20:
Close Conditions – Other Than Auto-Reclosing
Unlatch Close Conditions
Figure SECTION 1: .21 shows the means to unlatch the close signal output. Other unlatch close
logic details in Figure SECTION 1: .21:
Содержание SEL-351P
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