• Three phase plus ground time and/or instantaneous overcurrent protection, replacing four separate relays. |
• Nine selectable time-overcurrent curves and one custom curve. |
• Large, 16 character, 2-line, back-lit LCD front panel display for easy review of metered data and settings. |
• Standard metering functions: |
| • RMS and average RMS currents |
| • Ampere demand (per phase & average) |
• Optional metering functions: |
| • RMS and average RMS voltages |
| • Active power (kWatts) |
| • kW demand |
| • kW hours |
| • Apparent power (kVA) |
| • Volt-amperes reactive (kVAR) |
| • kVAR hours |
| • Power factor |
| • Frequency |
• Optional protective functions: |
| • Over and/or under voltage protection (59/27) |
| • Phase and ground directional overcurrent |
| • Over and/or under frequency protection (81 O/U) |
| • Negative sequence overcurrent (46) |
| • Negative sequence voltage (47N) |
| • Voltage phase sequence (47) |
• Waveform capture (2 buffers at 1 full second duration each), allowing a review of the fault waveforms and line harmonic conditions on your PC. |
• Trip log, recording information on the last eight trip events, including time, date, interrupted amps, time in pickup and other pertinent data to add in quick disturbance analysis. |
• Event Log, monitoring relay functions for status changes and recording data available when one occurs. |
• Min/Max logs, storing data from metering functions, including current, voltage, power and frequency, all with time stamping. |
• Front-mounted RS232 port for local access to all data and settings. |
• Direct connection to the Siemens ACCESS electrical data system via an optional RS485 port for enhanced communications and control. |
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