8
Metering & Monitoring
SIMPRO-100
114 PRIM-2400C
8.3 Load Profiling
The SIMPRO-100 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 6.8.9, page 91.
Load profile data retained depends on the relay
options you select. Table 8.7 lists the load profile
data retained for each relay option.
Table 8.7 Load Profile Values
8.4 Motor Operating
Statistics
The SIMPRO-100 Relay retains useful
information regarding the protected motor. The
serial port MOTOR command and front-panel
Motor Statistics commands make the stored data
available. The data also appear in the Modbus
memory map. Items included in the report are
shown below.
Note: While the relay power is off, the elapsed
timers do not advance. If relay power is off
for a significant time, the elapsed
calendar time will not match the elapsed
time recorded by the relay.
8.4.1 Times & Totals
The relay records the total time that the motor is
running and stopped, then divides the running
time by the total time to indicate a percent time
running. These figures provide an indication of
the amount of use that the motor is receiving. The
relay also records the total megawatt-hours
consumed by the motor and the total number of
motor starts that have taken place.
8.4.2 Average & Peak Data
To help you discern operational trends early, the
relay records the average and peak of a number
of key measurements, listed below. Some of
these measurements are dependent on the
presence of optional voltage inputs and RTD
inputs. The relay stores average and peak values
of:
• Starting time in seconds
• Starting current
• Minimum starting voltage
• Starting % Thermal Capacity
• Running % Thermal Capacity
• RTD % Thermal Capacity
• Running current
• Running kW, kVAR, and kVA
Relay Option Load Profile Values
All Models Ia, Ib, Ic, In Fundamental
Magnitudes
% Thermal Capacity
% Unbalance
Frequency
With RTD Monitoring
or when the
SIMPRO-100-RTD
External Module is
connected
Hottest Winding RTD Temperature
Hottest Bearing RTD Temperature
Ambient Temperature
With Voltage Inputs Vab, Vbc, Vca Fundamental
Magnitudes
kW, kVAR, and kVA
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