Category: Industry Trends

Eaton’s Generator Relays (EGR5000) are preferred by users because of their

unmatched versatility and dependability. These multifunctional relays provide

control and backup protection for medium- to large-sized generators.

The EGR’s zone-selective interlocking function improves coordination and

tripping time. The unique design provides complete metering, protection,

and control in a single compact case, saving panel space and overall cost.

Communication protocols supported

Eaton generator relays support all of the following communication protocols

as well as the “Do Not Use” option.

• Modbus RTU

• Modbus TCP

• DNP RTU

• DNP TCP

• • DNP UDP

• IEC61850 with GOOSE

• Profibus

Common software tools

All E-series relays, including our E-series motor relays, use the same software

interface for easy access to information and programming of settings. Whether

you are using the front panel or the external software, the interface is the same

on all models.

• Operation

• System Parameters

• Protection Parameters

• Device Parameters

• Control

• Logic

• Device Planning

• Service

Control Functions

• Breaker open/close

• Remote open/close

• Programmable I/O

• Programmable Logic

• Programmable LEDs

• Multiple setting groups .

• Cold load pickup .

• CT supervision

Communication Features

• Local HMI .

• Password protected .

• Addressable .

• IRIG-B

• Local USB communication port .

• Configuration software

• Remote communication port:

• RS-485 Terminals

• Ethernet RJ45

• Fiber Optic ST

• RS-485 D-SUB

• LC Duplex Fiber Optic

• Protocols:

• Modbus-RTU

• Modbus-TCP

• IEC-61850

• DNP3-RTU

• DNP3-TCP/UDP

• Profibus-DP

Metering Features

• Amperes: Positive, negative and zero sequence .

• Ampere demand .

• Volts: Positive, negative and zero sequence .

• Phase angles .

• Volt-amperes and VA demand .

• Watts and kW demand .

• kWh (forward, reverse, net)

• Vars and kvar demand

• kvarh (lead, leg and net) .

• Power factor .

• Frequency .

• % THD V and I .

• Magnitude THD V and I

• Minimum/maximum recording .

• Sync Values

• Trending (load profile over time)

Monitoring Features

• Trip coil monitor

• Breaker wear primary and secondary (accumulated interrupted

current) .

• Oscillography (6000 cycles total) .

• Fault data logs (up to 20 events) .

• Sequence of events report (up to 300 events) .

• Clock (1 ms time stamping) .

Features

Protection Features

• Phase overcurrent elements:

• Three instantaneous elements with timers ( 50P[1], 50P[2], and

50P[3])

• Three inverse time overcurrent elements (51P[1], 51P[2], and

51P[3])

• 11 standard curves

• Instantaneous or time delay reset

• Voltage Restraint (51P[2], and 51P[3])

• Directional Control (All Elements)

• Ground overcurrent elements:

• Two instantaneous measured elements with timers (50X[1],

and 50X[2])

• Two instantaneous calculated elements with timers (50R[1],

and 50R[2])

• Two inverse time overcurrent measured elements (51X[1], and

51X[2])

• Two inverse time overcurrent calculated elements (51R[1], and

51R[2])

• 11 standard curves

• Instantaneous or time delay reset

• Directional Control (All Elements)

• Breaker failure (50BF) .

• Phase unbalance negative sequence overcurrent (46[1], 46[2])) .

• Phase voltage unbalance and sequence protection (47[1], 47[2]) .

• Main 3-phase under/overvoltage (27M[1], 27M[2], 59M[1], 59M[2])

• Auxiliary single-phase under/overvoltage (27A[1], 27A[2], 59A[1],

59A[2])

• Ground fault overvoltage relay (59N[1], 59N[2])

• 6 Frequency elements that can be assigned to: over frequency,

under frequency, rate of change, or vector surge (81[1], 81[2],

81[3], 81[4], 81[5], 81[6])

• Apparent and displacement power factor (55A[1], 55A[2], 55D[1],

55D[2]) .

• Forward and Reverse Watts (32[1], 32[2], 32[3])

• Forward and Reverse Vars (32V[1], 32V[2], 32V[3])

• Synch Check (25)

• Autoreclosing (79)

• Zone interlocking for bus protection (87B) .

• Switch onto fault protection

• Cold load pickup

The EDR-5000 distribution protection relay includes programmable

logic functions . Logic gates and timers may be defined and arranged

for customized applications . Programmable logic control functions

make the EDR-5000 relay ideally suited for main-tie-main and main

1/main 2 transfer schemes . Flash memory is used for the program

ming and all settings are stored in nonvolatile memory . The relay

allows for four preprogrammed setting groups which can be acti

vated through software or contact input .

Flash memory is used for the programming and all settings are

stored in nonvolatile memory . The relay allows for four prepro

grammed setting groups which can be activated through software,

the display or a contact input .

The EDR-5000 distribution protection relay has mass memory for

data storage and a real-time clock with 1 ms time resolution . The

relay will log 300 sequence of event records, 20 detailed trip logs,

minimum/maximum values, load profiles, breaker wear information

and oscillography data .

The EDR-5000 has eight programmable binary inputs, 2 normally

opened and 8 Form C heavy duty outputs and one form C signal

alarm relay . It can be powered from 19 Vdc to 300 Vdc or 40 Vac to

250 Vac auxiliary power

General Description

Eaton’s EDR-5000 distribution protection relay is a multi-functional,

microprocessor-based relay for feeder circuits of all voltage levels .

It may be used as a primary protection on feeders, mains and tie

circuit breaker applications; or as backup protection for transformers,

high voltage lines and differential protection . The relay is most com

monly used on medium voltage switchgear applications

The EDR-5000 distribution protection relay provides complete cur

rent, voltage, and frequency protection and metering in a single,

compact case . The relay has four current inputs rated for either 5

amperes or 1 ampere and four voltage inputs . Three of the voltage

inputs are to be connected to the 3-phase power voltage for voltage

protection and for metering . They can be connected in wye-ground

or open delta configuration . The fourth voltage is for independent

single-phase undervoltage/overvoltage protection, or ground protec

tion for an ungrounded system .

The maintenance mode password protected soft key can be used for

arc flash mitigation to change to an alternate settings group, set to

have instantaneous elements only . The multiple setting groups can

also be changed, via communications or a digital input .

An integral keypad and display is provided for direct user program

ming and retrieval of data without the need of a computer . 14 pro

grammable LEDs provide quick indication of relay status .

A front USB port is provided for direct computer connection . An

RS-485 communication port on the back is standard for local area

networking using Modbus-RTU or DNP3 . An optional Ethernet port

and protocols are available .

Key Features, Functions and Benefits

• Microprocessor-based protection with monitoring and control for

medium voltage main and feeder applications .

• Current, voltage, and frequency protection for electrical power

distribution systems .

• Complete metering of voltage, currents, power, energy, mini

mum/maximum and demand functions .

• Complete metering, protection, and control in a single compact

case to reduce panel space, wiring and costs .

• Integral test function reduces maintenance time and expense .

• Zone selective interlocking improves coordination and tripping

time, and saves money compared to a traditional bus differential

scheme .

• Programmable logic control functions for main-tie-main transfer

schemes* .

• Reduce trouble shooting time and maintenance costs- Trip and

event recording in non-volatile memory provides detailed informa

tion for analysis and system restoration . 6000 cycles of waveform

capture aids in post fault analysis (viewable using Powerport-E

software)

• Minimum replacement time- Removable terminal blocks ideal in

industrial environments

• Front USB port and Powerport-E software provides local com

puter access and user-friendly windows based interface for relay

settings, configuration, and data retrieval .

• Breaker open/close from relay faceplate or remotely via commu

nications .

• Fast an easy troubleshooting, improved maintenance procedures

and increased device security . Provides detailed traceability for

system configuration changes

• Relays self-diagnostics and reporting improves uptime and trou

bleshooting .

• Breaker trip circuit monitoring improves the reliability of the

breaker operation

General description

The EBR-3000 relay, combined with an EBR-Z (EBR-3Z), is a digital

protection relay designed for high impedance differential protection

schemes . The intuitive operating system with validation checks and

extensive commissioning functions such as the built-in fault simula

tor allow safe and time-optimized maintenance and commissioning .

The parameter setting and evaluation software PowerPort-E can be

used consistently across the entire family of E-Series relays .

The principle of the high impedance differential protection is compa

rable with low impedance differential protection: Calculate and moni

tor the sum of all the currents flowing into the protected object, and

under non-fault conditions the sum is zero . Any differential current,

however, is forced through the high impedance of the high imped

ance relay .

The input of the high impedance relay consists of a resistance

(EBR-Z) and an overcurrent protection element (ANSI 87 in the EBR

3000) .

The following convention is important to know: Even though the

EBR-3000 measures the currents flowing through the stabilizing

resistor, all the measurements are presented as a voltage across

this stabilizing resistor (which is 2000 Ω for the EBR-Z) . The burden

of the EBR-3000 measuring input (which is in series with the EBR-Z

resistor) can be neglected compared to the 2000 Ω impedance .

The EBR-3000 monitors the magnitude of this voltage to differenti

ate between in-zone and through faults .

A varistor is built into the EBR-Z . It is connected across the input of

the relay to avoid damage to the relay caused by high voltage . The

varistor needs to be able to conduct significant power as the paral

leled CTs deliver current under special fault circumstances (e . g . in

case of a breaker failure) for more than 30 cycles .

To prevent damage to the relay due to system issues, a lockout relay

is required to short-circuit the high impedance when an trip is initi

ated .