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3
Operation
Subaddress
Parameter
Selection
2301
Function
Enable
cr Disable
2302
Curve
Detnte Time,
hverseTime
2303
TrpOnVolt
Una-to-Neutral,
Une-to-Lne
2304
Ac~qJp
40-260V
2305
Time Delay (definite
0.1
-
60.0 s
time)
2306
Time Dial (nverse
0.1 - 9.9
time
2310
Freezewtm1
on Pickup, on
Trip,
or None
2311
Freezewtm2
on Pickup, on Trip,
or None
Table 3.16
27 Undervoltage Configuration, Major
Block 2300
This protective ft.nction responds to an mdervoltage condi-
tion as determined by the protection settings. The element
may be disabled or enabled (2301), the voltage type which
is monitored is selected (2303), and the voltage value for
pickup (2304) is specified.
If the VTs are comected line-to-neutral, the voltage type
selected can be either line-to-line or line-to-neutral. If the
VTs are connected line-to-line, only the line-to-line voltage
type may be selected. In either case, the maximum normal
voltage would be 150 volts as measured line-to-line.
The trip delay can be selected as either definite time or
inverse time (2302). If definite time is selected, the trip delay
is specified in seconds at address 2305. If inverse time is
selected, the time dial value is specified in address 2306.
Each of the two waveform capture buffers can be
indepen-
dently programmed to freeze the snapshot on pickup, on
trip, or not at all (2310 and 2311). For this protection ele-
ment, the default for both buffers is
"None."
These settings
are not included in the alternate parameter sets.
3.7.13 Phase Sequence Voltage 47 (Address
2400)
Use this address block to change the phase sequence volt-
age protection settings. The function may be enabled or dis-
able. This protective fmction is available only in the voltage
input option is installed on the relay. These parameters are
not included in the alternate parameter sets. The associated
relay subaddresses are listed Table 3.17.
26
Subaddress
Parameter
Selection
2401
Function
Enable
or
Disable
2410
Freeze
Wfm1
on Pickup, on
Trip,
or None
2411
Freeze
Wfm2
on Pickup, on
Trip,
cr None
Table 3.17
47 Phase Sequence Voltage Configuration,
Major Block 2400
This protection element responds to an incorrect voltage
phase sequence condition. The correct phase sequence is
defll19d at address 1003 in the device configuration. The
element may be disabled or enabled (2401). There is no trip
delay. This protection element does not function if the input
voltage is less than 40 volts.
Each of the two waveform capture buffers can be indepen-
dently programmed to freeze the snapshot on pickup, on
trip, or not at all (2410 and 2411). For this protection ele-
ment, the default for both buffers is
"None."
3.7.14 Breaker Failure 50BF (Address 2800)
Use this address block to change the breaker failure protec-
tion settings. The pickup value and trip delay may be speci-
fted. The associated relay subaddresses are listed in Table
3.18. These parameters are not included in the alternate
parameter sets.
Subaddress
Parameter
Selection
2801
Function
Enable cr Disable
2802
Pickup
5ACTS:0.1- SA
Of'
1
A crs:
o
.02
-
1 A
2804
Time Delay
8-254
cydes
Table 3.18
50BF Breaker Failure Conftgurat1on, Major Block
2800
This protective fmction responds to a fault condition where
current flow is not interrupted after a trip has been issued to
the circuit breaker. The element may be disabled or enabled
(2801) and the maximum allowable current after a trip is
specified (2802). The trip delay (in cycles) is set in address
2804.
In operation, the protective function, when enabled, will
begin to monitor the current flow in the circuit following a trip
command by the relay. Simultaneousty, the protective func-
tion starts a timer. If the current flow does not drop below
the pickup value specified in address 2803 before the time
delay specified in address 2804 has elapsed, a breaker fail-
ure is assl.llled. At this point an another trip command can
be issued to a different breaker.
Siemens Energy & Automation, Inc.
~·
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