MP8000 Bluetooth Overload Relay FAQ
■The MP8000 has a wide voltage and current range, and operates on 50/60 Hz to protect nearly any motor or pump. It can also be used to retrofit older current-only based electronic overloads.
■90–690 V ac
■0.5–1,000 A
■For less than 100 A, conductors can be passed through the built-in current transformers on the MP8000. For applications above 100 A, external current transformers are required.
▲Overload (Overpower) (49)
▲Underload (Underpower) (37P)
▲Overcurrent (51)/Jam
▲Undercurrent (37)
▲ Current Unbalance/Phase Loss (46)
▲ Phase Reversal (47)
▲Overvoltage (59)
▲ Undervoltage (27)
▲ Voltage Unbalance (47)
▲Rapid Cycling/Jog
▲ Contactor Failure
▲Zero-Sequence Ground Fault (50Ns)
▲PTC Motor Overtemperature (49)
■No, the MP8000 is compatible with all of these applications except for the 777-HVR 480 V ac applications.
■No, the MP8000 can be used in both single-phase and 3-phase applications.
■Yes, the MP8000 can be put into current-only mode which will disable voltage-based protection functions. However, Littelfuse strongly recommends utilizing the voltage-based protection functions for superior protection especially prior to motor startup. The current-only mode is intended for retrofit applications on voltages above 690 V ac.
■The small amount of space available on the front of a traditional relay limits the number of settings that can be displayed on the screen. By using an app to provide this information, we were no longer restricted when providing details about each setting.
■We also took advantage of our long history with pump protection (single and 3-phase), to add unique capabilities useful for pump applications.
■−40 °C to 70 °C (–40 °F to 158 °F)
■The MP8000 is 74.4 mm high, 103.6 mm wide, and 121.7 mm deep.
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FAQ |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2020/6/16 |
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Rev: 2-A-060820 |
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PF704 |
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727 KB |
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