The MP8000 series motor protection relay is designed to protect three-phase or single-phase motors with operating voltages of 90-690 V ac (use of external potential transformers can extend upper voltage range above 690 V ac). The MP8000 protects any motor drawing 0.5-1,000 full load amperes (external CTs are required above 100 A). The MP8000 series provides locked rotor, overload, overtemperature, and unbalance protection. Voltage-based protection elements are standard. These relays include inverse time-over current elements suitable for overload protection, and they also provide monitoring functions. The protection is unsurpassed by combining overload, voltage, phase loss and reversal, voltage and current imbalance, power monitoring, and underload in one package. Operation The relay operates as a fail-safe device. This means when the voltage is within the programmed limits, the relay will energize—the NO contact will close. When the unit loses power or senses a fault condition, the relay will de-energize and contacts will return to their original state. Once the unit has been installed and programmed, it is ready to operate. Once acceptable voltage is applied and the RD0 timer expires, the relay will energize—the NO contact will close. Bluetooth/Ethernet Programming This advanced motor protection electronic overload relay is fully programmable via Bluetooth* using an iPhone or Android smartphone/tablet with the Littelfuse App. The Bluetooth and Ethernet functions are easy to use, and arc-flash safety is increased because the app allows settings to be modified and real-time operational information viewed. The user is not required to open the control panel for viewing operational information and faults on the app. These relays also feature an Ethernet communications port that can be used to form an Ethernet Modbus TCP/IP or Ethernet/IP network. They can be remotely monitored and controlled from a PC, or SCADA system, and data logging through a PC with the optional MP8000 software or other software program using the MP8000 memory map. This capability allows for a simple cost-effective way to further enhance arc-flash safety. Specifications Functional Characteristics Frequency 50/60 Hz TC- Overcurrent Trip Class Trip class 02-60 or linear Output Characteristics Output Contact Rating Control Relay SPST - Form A Auxiliary Relay SPDT - Form C Pilot Duty Rating B300 General Characteristics Ambient Temperature Range Operating -40 °C to 70 °C (-40 °F to 158 °F)Storage -40 °C to 85 °C (-40 °F to 185 °F) Accuracy Voltage ±1 % of reading ±0.5 V Current ±2 % (2 to 100 amperes direct) Timing /-0.5 % of setting +/- 1second GF Current ±5 % Repeatability Voltage ±0.5 % Current ±1 % (2 to 100 A direct) Power Consumption
