Eaton MP-3000 Motor Protection Relay Guide

Eaton MP-3000 Motor Protection Relay Complete Technical Manual

Introduction: A New Generation Solution for Intelligent Motor Protection

In the field of industrial automation, as the core power equipment, the reliable operation of motors is directly related to production efficiency and equipment safety. The Eaton MP-3000 motor protection relay is an advanced microprocessor-based protection device designed specifically for three-phase motors of various specifications and voltage levels, providing comprehensive protection for both induction and synchronous motors.

As a direct replacement for the previous generation Westinghouse/Butler Hammer IQ 1000 II, the MP-3000 not only maintains the same installation holes and wiring configuration, but also introduces multiple innovative features, including Intel-I-Trip intelligent overload protection, adaptive thermal modeling, enhanced communication capabilities, and optional quick plug drawer structure. This article is based on the official technical manual IM02602002E, providing a comprehensive analysis of the technical characteristics, protection functions, parameter settings, installation wiring, and application points of MP-3000.

Chapter 1 Product Overview and Core Features

1.1 Product positioning

The MP-3000 motor protection relay is an advanced motor management device launched by Eaton, suitable for:

50/60 Hz three-phase motor

Any power level and voltage level

Induction motor or synchronous motor

Can be equipped with or without RTD (resistance temperature detector)

Usually installed in motor starters or switchgear

1.2 Overview of Main Functions

The MP-3000 provides comprehensive protection, alarm, and control functions, corresponding to the following ANSI device numbers:

protection function

Intel-I-Trip I ² t overload protection (49/51)

Locking protection (49S/51)

Final tripping current (51)

Negative sequence current/phase imbalance and reverse phase protection (46)

Instantaneous overcurrent trip (50)

Ground fault protection (50G)

RTD temperature trip (URTD module required) (49/38)

Underload tripping (37)

Unit time startup limit (66)

Blocked/stuck trip (51R)

Zero speed switch tripped (14)

I ² t automatic or manual reset (86)

Fault safe or non fault safe trip modes are optional

alarm function

ground fault

I ² t overload

Stuck/stuck

Underload

Phase imbalance

RTD temperature (URTD module required)

control function

Switching control of voltage reducing starter

Incomplete sequence detection and tripping

Cold start frequency limit

Unit time startup limit

Minimum startup interval time

Anti reversal delay

Load shedding and recovery based on current process

Long acceleration time characteristic

Motor stop input for synchronous motor and capacitor applications

Remote trip input

Differential trip input

Emergency bypass reset

Modify parameters during motor operation (controllable switching)

Disarmament mode is used for debugging

1.3 Compatibility with IQ 1000 II

MP-3000 has fully considered the compatibility of IQ 1000 II replacement in its design:

Same installation hole size

Similar terminal configuration and wiring methods

Important note: The factory jumper between terminal 6 (remote common) and terminal 9 (discrete input common) of IQ 1000 II must not be installed on MP-3000. Terminal 6 of MP-3000 always provides 120 Vac power supply for wetting remote contacts.

Chapter 2 Technical Specifications

2.1 Power Supply

Parameter specifications

Rated voltage 120 Vac or 240 Vac (+10%, -25%)

Working range: 120 Vac: 90-132 Vac; 240 Vac: 180-264 Vac

Interrupt crossing time 60 Hz: 13 cycles; 50 Hz: 11 cycles

Frequency 60 Hz Rated: 57-63 Hz; 50 Hz Rated: 47-53 Hz

Maximum power consumption 24 VA; URTD: maximum 6 VA; IPONI: maximum 1 VA

2.2 Current input

Parameter specifications

Rated current 1 A or 5 A

CT rated value 2 × I1 continuous

CT burden 50 × I1 for 1 second; <0.25 VA @ 5 A； <0.05 VA @ 1 A

2.3 Measurement accuracy

Parameter accuracy

Phase current accuracy ± 1% I1 (0 to I1); ± 1% reading (I1 to 4 × I1)

Grounding current accuracy ± 1.5% I1 (0 to 55% I1); ± 2% I1 (55% I1 to I1); ± 2% reading (I1 to 4 × I1)

2.4 Discrete Input

Parameter specifications

Quantity: 2 programmable inputs

Rated value 1.2 VA @ 120 Vac

Turn off voltage maximum 36 Vac

The minimum conducting voltage is 86 Vac

2.5 Output contacts

Parameter specifications

Quantity: 4 C-type (1NO+1NC) programmable

Instantaneous capability of 30 A ac/dc, lasting for 0.25 seconds

Breaking capacity 0.25 A @ 250 Vdc (resistive); 5 A @ 120/240 Vac； 5 A @ 30 Vdc

2.6 Analog output

Parameter specifications

Range ± 4 to 20 mA, programmable

Maximum load 1 k Ω

Accuracy 1%

2.7 Environment and Standards

Parameter specifications

Working temperature -20 ° C to+60 ° C

Storage temperature -45 ° C to+85 ° C

Humidity 0 to 95%, no condensation

Certification standards ANSI/IEEE C37.90, UL 1053, EN 50081-2, EN 61000-6-2

Chapter 3 Operating Interface and Display Mode

3.1 Front panel layout

The operation panel of MP-3000 includes the following elements:

Display window: Large LED alphanumeric display screen, which can be viewed clearly from any angle.

Protected button: located inside the protective door in the bottom left corner of the panel, covering two buttons: