Littelfuse MP8000, MP8000 Series, Motor Protection System, 90–690VAC
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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 | <5 W |
| Pollution Degree | 3 (conformal coating standard) |
| Class of Protection | IP20 |
| Relative Humidity | 10–95 %, non-condensing per IEC 68-2-3 |
| Terminal Torque (depluggable terminal blocks) | 5.5 in.-lbs. |
| Terminal Torque (Earth Ground) | 7.9 in.-lbs |
| Standards Passed | |
| Electrostatic Discharge (ESD) | IEC 61000-4-2, Level 3, 6 kV contact, 8 kV air |
| (RFI), Conducted | IEC 61000-4-6, Level 3 10 V/m |
| (RFI), Radiated | IEC 61000-4-3, Level 3 10 V/m |
| Fast Transient Burst | IEC 61000-4-4, Level 3, 3.5 kV input power |
| Surge | IEC 61000-4-5, Level 3, 2 kV line-to-line; Level 4, 4 kV line-to-ground |
| FCC |
Rating Part 15.107 for emissions, Part 15.247 for intentional radiators |
| Short Circuit Withstand Rating | 100 kA symmetrical at 690 VAC |
| Hi-Potential Test | Meets UL 508 (2 x rated V +1000 V for 1 minute) |
| Maximum Conductor Size (with insulation) | 0.63” |
| Dimensions |
H 74.42 mm (2.93”) W 103.63 mm (4.08”) D 121.67 mm (4.79”) |
| Weight | 0.85 lbs (13.6 oz, 385.6 g) |
| Mounting Method | Surface mount (4 - #8 screws) or DIN-rail mount |
| Certification & Compliance | |
| cULus | UL 60947, UL 1053, C22.2 (File #E68520) |
| CE | IEC 60947 Edition 5.2, IEC 60947-8 |