EATON MP-4000 motor protection relay

EATON MP-4000 motor protection relay

Product basic positioning and upgrade core

Product attributes: Eaton MP-4000 is a multifunctional protection relay specifically designed for medium voltage motors. It integrates protection, fault diagnosis, power metering, and multi-dimensional communication without the need for additional relays/instruments, achieving one-stop motor management and outstanding cost-effectiveness.

Upgrading background: Based on the industry-leading protection/control/diagnostic functions of MP-3000, the core has been upgraded with the addition of a voltage transformer (VT) input interface, expanding voltage related protection and metering capabilities, while upgrading metering functions and communication protocols.

Core Design: Adopting a high reliability structure, flexible functionality, and user-friendly operation, it is an industrial grade motor protection core equipment belonging to Eaton's PowerChain power system solution system.

Panel operation and safety design

The MP-4000 is equipped with a user-friendly operation panel and multiple safety designs, with the following key details:

Visual indication: LED indicator lights can quickly view relay, trip, and alarm status, making the status clear at a glance.

Convenient operation: Set up a help button to provide full process operation guidance on the device side; Display and navigation buttons to quickly access real-time data, relay settings, and historical information with minimal keystrokes; The programming button is used for parameter input.

Security protection: The restricted access function is protected by a safety cover with an instrument seal to prevent unauthorized operations.

Emergency function: The emergency override button is disabled by default. After enabling it, users can reset the hot bucket and start the prohibition timer/counter to achieve emergency motor start.

Exclusive Core Protection Algorithm - Intel-I-Trip

Algorithm features: Eaton's self-developed Intel-I-Trip overload protection algorithm is unique to the MP-4000 and can be connected to the motor RTD (thermistor) through an optional URTD module. Based on the real-time temperature of the motor, it achieves adaptive tripping characteristics, balancing maximum motor protection and capacity utilization.

Usability: Custom trip curves do not require professional programming technicians/engineers. Simply input motor manufacturer data into the device to automatically generate the optimal trip curve for the motor; The help menu can provide full operation assistance and lower the threshold for use.

Full functional system (including IEEE standard equipment number correspondence)

MP-4000 covers full functions of protection, metering, control, and diagnosis, and adds voltage related functions brought by VT input. The core functions correspond to IEEE standard equipment numbers, and the specific classifications are as follows:

table

Functional Category Core Functional Item Remarks/Associated Modules

Protection functions (IEEE standard) include motor thermal overload (49), locked rotor (50P), phase imbalance (46), grounding overcurrent (50G), phase overcurrent (51), undercurrent (38), underpower, reverse phase (32/37), bearing temperature (14), speed switch (14), undervoltage/overvoltage, negative sequence voltage, frequency monitoring undervoltage/overvoltage, etc., which are newly added for VT input; The bearing temperature/speed switch is optional; Differential protection needs to be paired with MD-3000

Measurement function voltage (V), current (I), frequency (F), power factor (PF); Active/reactive/apparent power; Voltage ratio% V2/V1; V/I average value; RTD temperature reading VT input expands voltage measurement capability

Control and diagnostic functions include anti reverse, voltage reduction startup, incomplete sequence protection, and forward/reverse startup; Historical logs, event logs, startup logs, startup curves; Local/remote data display start curve is the core function of Motor Start Profile

Core competitive advantages and distinctive features

1. Anti interference capability of power quality

Equipped with industry-leading voltage sag tolerance (SRT) capability, capable of withstanding 20 cycles of voltage sag, easily addressing most power grid power quality issues; At the same time, it can withstand the typical 15-20 cycle reclosing process of the power grid without resetting, avoiding motor shutdown caused by "flashing lights".

2. Certification and Environmental Protection

UL 1053 certification: Compliant with ground fault protection standards, no need to separately configure grounding relays, saving wiring, space, time, and cost.

Standard dielectric conformal coating: Eaton's exclusive standard can withstand harsh weather/industrial environments, prevent relay failures, and adapt to various harsh working conditions.

3. Humanized maintenance and start-up control

Armed/Shielded maintenance mode: When armed, the motor is protected normally; When Disarm is activated, the relay only indicates the trip status and does not actually trigger the motor trip, solving the problem of false tripping during maintenance/testing.

Motor Start Profile intelligent start control: provides start logic control for direct start/voltage reduction start motors to prevent excessive starting or insufficient cooling before starting; It can also be used for developing protection parameters for old motors without data.

4. Advanced data logging and troubleshooting

Log storage: Record 20 latest trip/alarm events, 100 latest motor operation events, and the last 4 startup processes, all with accurate timestamps.

Data monitoring: Continuously monitor motor current, temperature, and operating status, which can be displayed locally or remotely viewed on the PC through the optional Power Xpert Server Core Software.

Troubleshooting: Eliminating guesswork through complete historical data and significantly reducing motor downtime.

5. Non disruptive maintenance design

The optional quick release pull-out housing allows the relay to be pulled out for periodic testing or equipment modification, without interrupting the industrial production process and ensuring operational continuity.

Integration of Communication and Power Systems

Communication protocol: Upgraded and added Modbus RTU and DeviceNet communication options to achieve seamless integration with industrial control systems, greatly improving communication versatility.

Power Xpert architecture integration

As the core component of Eaton's PowerChain power system solution, the MP-4000 integrates with the Power Xpert architecture to transform the power system into an integrated agile system that can efficiently monitor, control, and manage.

Flexible integration method: 1-2 devices can be monitored through the Power Xpert gateway with a basic web interface; MP-4000 can also be connected to process control, facility management, or enterprise level information systems through Power Xpert Server Core Software to achieve full system power management.

Data value: Transforming the raw data of motor operation into valuable information, supporting predictive maintenance, operation and maintenance decision-making, and improving system reliability and start-up rate.

High cost-effectiveness optional supporting products

Eaton provides targeted optional accessories for MP-4000 to meet the needs of different scenarios and avoid functional redundancy:

URTD module: optional accessory, used to connect the motor RTD temperature sensor, providing real-time temperature data for the Intel-I-Trip algorithm and achieving temperature adaptive overload protection.

MD-3000 relay: designed in conjunction with MP-4000, it provides special protection functions such as differential protection for large motors, and can be selected as needed to reduce unnecessary costs.

Pull out shell: As mentioned earlier, it achieves uninterrupted maintenance and provides support for industrial continuous production.