4.187
Date Code 20170814
Instruction Manual
SEL-700G Relay
Protection and Logic Functions
Other Settings
TDURD Minimum Trip Time
This timer establishes the minimum time duration for which the TRIP Relay
Word bit asserts. This is a rising-edge initiated timer.
Trips initiated by the TR Relay Word bit (includes OPEN command from
front-panel and serial ports) are maintained for at least the duration of the
minimum trip duration time (TDURD) setting.
TR Trip Conditions SEL
OGIC
Control Equation
There are five trip logic equations within the SEL-700G. These equations are
designed to operate when the SEL
OGIC
control equation trip variable setting
TRm is asserted (m = X, 1, 2, 3, or Y), and to unlatch when the SEL
OGIC
control equation setting ULTRm is asserted.
The TRm equations and associated Relay Word bits TRIPm of the trip logic
(see Figure 4.126) are intended for applications as listed below:
➤
TRX, TRIPX—Trip breaker 52X
➤
TR1, TRIP1—Trip field breaker 41
➤
TR2, TRIP2—Trip prime mover
➤
TR3, TRIP3—Trip generator lockout
➤
TRY, TRIPY—Trip breaker 52Y
UNLATCH TRIP 3
SV
ULTR3 := NOT TR3
BREAKER
m
STATUS
SV
52A
m
:= 0
CLOSE X EQUATION
SV
CLX := SV03T OR CCX OR
SV11T AND 25C
CLOSE X EQUATION
SV
CLX := SV03T AND NOT LT02
OR CCX
CLOSE X EQUATION
SV
CLX := SV03T AND NOT LT02
OR CCX OR SV11T AND 25C
f
CLOSE Y EQUATION
SV
CLY := SV03T AND LT02 OR
CCY
CLOSE Y EQUATION
SV
CLY := SV03T AND LT02 OR
CCY OR SV12T AND 25AY1
UNLATCH CLOSE
m
SV
ULCL
m
:= TRIP
m
a
m = X or Y.
b
Default settings shown are for the SEL-700G0 and the SEL-700G1.
c
Default settings shown are for the SEL-700GT with optional generator protection.
d
Default settings shown are for the SEL-700GW.
e
Default settings shown are for the SEL-700GT and the SEL-700GW.
f
Default settings shown are for the SEL-700GT.
Table 4.53
Trip/Close Logic Settings
a
(Sheet 2 of 2)
Setting Prompt
Setting Range
Setting Name := Factory Default
Содержание SEL-700G Series
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