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Multilin 469 Motor Management Relay ... - GE Digital Energy

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4.6.4 Trending (Data Logger)<br />

CHAPTER 4: INTERFACES<br />

The trending or data logger feature is used to sample and record up to eight actual values<br />

at an interval defined by the user. Several parameters can be trended and graphed at<br />

sampling periods ranging from 1 second up to 1 hour. The parameters which can be<br />

trended by the EnerVista <strong>469</strong> Setup software are:<br />

• Currents/Voltages:<br />

Phase Currents A, B, and C, and Average Phase Current<br />

<strong>Motor</strong> Load<br />

Current Unbalance<br />

Ground Current<br />

Differential Currents A, B, and C<br />

System Frequency<br />

Voltages Vab, Vbc, Vca Van, Vbn & Vcn<br />

• Power:<br />

Power Factor<br />

Real (kW or hp) Reactive (kvar), and Apparent (kVA) Power<br />

Positive Watthours<br />

Positive and Negative Varhours<br />

Torque<br />

• Temperature:<br />

Hottest Stator RTD<br />

Thermal Capacity Used<br />

RTDs 1 through 12<br />

• Demand:<br />

Current<br />

Peak Current<br />

Reactive Power<br />

Peak Reactive Power<br />

Apparent Power<br />

Peak Apparent Power<br />

• Others:<br />

Analog Inputs 1, 2, 3, and 4<br />

Tachometer<br />

4–42 <strong>469</strong> MOTOR MANA<strong>GE</strong>MENT RELAY – INSTRUCTION MANUAL

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