Eaton XN-322-8AO-U2 Analog output module
The MP-3000 is an advanced microprocessor-based motor protection
relay that is easy to set up and use. It monitors, controls, and protects
motors against overload, thermal damage to rotor or stator, electrical
faults, and excessive starting, and many process equipment failures.
Advanced algorithms and thermal models give safe operation over a
wide range of conditions.
The MP-3000 protects 50 or 60 Hz three-phase motors of any size
or voltage level. It can protect induction or synchronous motors, with
or without RTDs. The relay is frequently installed in motor starters or
switchgear.
The MP-3000 Motor Protection Relay provides the following pro
tection, alarm, and control functions. ANSI device numbers are in
parentheses.
Protection
Intel-I-Trip I2t Overload Protection (49/51)
Locked-rotor protection (49S/51)
Ultimate trip current (51)
Negative sequence current/phase unbalance and reverse
phase protection (46)
Instantaneous overcurrent trip (50)
Ground fault protection (50G)
RTD trip with accessory URTD module (49/38)
Underload trip power and current (37)
Starts per time limit (66)
Jam or stall trip (51R)
Zero-speed switch trip (14)
I2t Auto or manual reset (86)
Fail-safe or non-fail-safe trip modes
alarming
Ground fault
I2t Overload
Jam / Stall
Underload
Phase unbalance
RTD temperature with URTD module
Control features
Transition control for reduced voltage starters
Incomplete sequence (process feedback) detection and trip
Permits user-set number of cold starts
Limits number of starts per time
User sets minimum time between starts
Antibackspin (time from stop to next start) delay
Current-based process load shedding and restoration
Long acceleration timing feature
Motor stop input for synchronous motor and condenser
applications
Remote trip input
Differential trip input
Emergency override clears blocks to motor restarting (if
enabled)
Program settings while motor runs, with controlled change
over (if enabled)
Disarmed mode for commissioning and checking in a
running process