Date Code 20010719
701 Motor Protection Relay
Metering & Monitoring
Load Profiling
8.7
Load Profiling
The SEL-701 Relay includes a built-in load profiling function that does not
require any configuration. The relay automatically records selected quantities into
nonvolatile memory every 15 minutes, synchronized to the quarter-hour. The relay
memory is sized to hold data for the past 34 days for relays equipped with voltage
inputs or 48 days for relays not equipped with voltage inputs before beginning to write
over the oldest data. Download the load profile data using the serial port
LDP
command described in
Section 6: ASCII Serial Port Operation
.
Load profile data retained depends on the relay options you select.
lists
the load profile data retained for each relay option.
Table 8.7
Load Profile Values
shows an example
LDP
serial port command response.
Table 8.7
Load Profile Values
Relay Option
Load Profile Values
All Models
Ia, Ib, Ic, In Fundamental Magnitudes
% Thermal Capacity
% Unbalance
Frequency
With RTD
Monitoring
(Relay Models
0701010 and
0701011) or when
the SEL-2600 RTD
Module is
connected
Hottest Winding RTD Temperature
Hottest Bearing RTD Temperature
Ambient Temperature
With Voltage
Inputs
(Relay Models
0701001 and
0701011)
Vab, Vbc, Vca Fundamental Magnitudes
kW, kVAR, and kVA
Содержание SEL-701
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