9.5
Date Code 20170814
Instruction Manual
SEL-700G Relay
Analyzing Events
Event Reporting
Currents, Voltages, and RTD Temperatures
The relay determines the maximum phase current during an event. The instant
the maximum phase current occurs is marked by an asterisk (*) in the event
report (see Figure 9.3). This row of data corresponds to the analogs shown in
the summary report for the event.
The
Current Mag
fields display the primary current magnitudes at the instant
when the maximum phase current was measured. The currents that are
displayed are listed below (model dependent):
➤
X and Y-Side CIAX Currents (
IAX
,
IBX
,
ICX
,
IGX
[IAX+ IBX+ ICX]
,
IAY
,
IBY
,
ICY
,
IGY [IAY +IBY +ICY]
)
➤
Neutral Current (
IN
)
The
Voltage Mag
fields display the primary voltage magnitudes at the instant
when the maximum phase current was measured. The voltages that are
displayed are listed below (model dependent):
➤
DELTAY_X or Y := WYE
➢
Phase-to-Neutral Voltages (
VAX
,
VBX
,
VCX
,
VAY
,
VBY
,
VCY
)
➢
Residual Voltage
VGX
(calculated from
VAX
,
VBX
,
VCX
),
VGY
(calculated from
VAY
,
VBY
,
VCY
)
➤
DELTAY_X or Y := DELTA
➢
Phase-to-Phase Voltages (
VABX
,
VBCX
,
VCAX
,
VABY
,
VBCY
,
VCAY
)
➤
Sync Voltage (
VS
)
➤
Neutral Voltage (
VN
)
If the RTDs are connected, the hottest RTD (°C) fields display the hottest RTD
reading in each RTD group. The hottest RTD temperatures in degrees
centigrade (°C) are listed below:
➤
Ambient
➤
Winding
➤
Bearing
➤
Other
Event History
The event history report gives you a quick look at recent relay activity. The
relay labels each new event in reverse chronological order with
1
as the most
recent event. See Figure 9.2 for a sample event history. Use this report to view
the events that are presently stored in the SEL-700G.
Remote Trip
REMTRIP AND TRIP
CommIdleLossTrip
(COMMIDLE OR COMMLOSS) AND TRIP
Trigger
Serial port TRI command
ER Trigger
ER Equation assertion
Trip
TRIP with no known cause
Table 9.1
Event Types
(Sheet 2 of 2)
Event Type
Event Type Logic
Содержание SEL-700G Series
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