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 .

Introduction

Flexible options allow installers to choose between fiber optic

loop cable that is installed in the field and can be labor intensive,

or wired point sensors that are factory-installed, reducing

labor time and cost as well as streamlining equipment

lead times.

The system can measure both light and current to eliminate

nuisance operation, and offers an innovative modular design

that allows for simple integration into electrical assemblies,

ideal for both new and retrofit installations. The system also

helps address arc flash safety concerns outlined in National

Fire Protection Agency (NFPA) standard 70E, which covers

employee workplace electrical safety requirements.

Control functions

• Programmable I/O

• Programmable LEDs

• Multiple setting groups (up to 4)

Communication (note 1)

• Local HMI

• Front USB communication port

• Remote communication port

• RS-485 terminals

• Ethernet RJ45

• Fiber optic ST

• RS-485 D-SUB

• LC duplex fiber optic

• IRIG-B

• Protocols

• Modbus RTU

• Modbus TCP

• IEC 61850 (MMS and GOOSE)

• DNP3-RTU

• DNP3-TCP/UDP

• Profibus-DP

Physical characteristics

EBR-3000 and EBR-Z mounted individually:

• Height: 8 .62 in . (219 mm)

• Width: 6 .82 in . (173 mm)

EBR-3000 and EBR-Z mounted together:

• Height: 8 .62 in . (219 mm)

• Width: 12 .5 in . (317 .5 mm)

• Depth: 7 .5 in . (190 mm), 5 .56 in* (141 mm*)

* Depth behind panel with projection mounted enclosure

Listings/certification

• UL, CSA, CE

Applications

• Three phase high impedance bus differential protection for switch

gear .

• Three phase differential protection of transformers, generators,

motors, etc .

• Restricted earth fault protection for grounded-wye windings or

balanced earth fault protection

Protection functions

• Differential protection (87)

• Open CT circuit (87SV)

Metered values

• Differential voltage readings

• Differential voltage phase angles

Fault and waveform monitoring

• Trip circuit monitoring1

• Fault data logs (up to 20 events)

• Sequence of event recorders (up to 300 events)

• Waveform capture (7.200 cycles total, customized file size)

Improve worker safety and maximize

equipment uptime with Eaton’s Arc Flash Relay

Eaton’s Arc Flash Relay system helps improve worker safety

and maximize electrical assembly uptime by quickly

clearing arc flash events. Featuring factory-installed Arc

Flash Relay modules and sensors, the system is designed to

rapidly detect and clear even the most difficult forms of arc

flash events in low-voltage (LV) and medium-voltage (MV)

electrical assemblies. Arc faults are the most dangerous

type of fault in LV and MV switchgear. Eaton’s Arc Flash

Relay system reduces the arc energy by clearing the

current feeding the arc.

Features and benefits

• An innovative module system allows for simple integration

into electrical assemblies

• Sensitive light inputs detect low power phase to ground

arc faults

• The relay’s configurable setup offers optional system

selectivity, opening the circuit breaker closest to the arc flash

• Flexible module options allow installers to choose between

fiber optic loop cable and wired point sensors

• If the point sensor option is selected, the relay can be

factory wired and tested, reducing time and labor costs

Core features

• Suitable for use with any condensing type bushing found in transformers,

circuit breakers, shunt reactors, etc. With the InsulGard, it can be used to

detect partial discharge in systems above 38KV.

• All monitoring, necessary sensors, recording equipment and diagnostic

software are non-invasive, which eliminates downtime and power interruptions.

• Self-operating system saves on labor costs because staff can now spend

time solving problems rather than uncovering them.

• Remote monitoring services and on-site equipment evaluation provides

expertise when you need it.

• Display panel shows an output signal proportional to the relative change

in the bushings’ currents due to insulation deterioration, which means users

receive accurate information for both the power factor and capacitance of

the monitored bushing set.

• Multi-function LED is a different color for normal (green), warning (yellow),

and alarm (red), providing instant recognition of the severity of any problem.

• Parameters can be programmed at the panel or remotely through an optional

computer link-up, units are self-diagnosing, and users can pinpoint any

malfunction locally as well as remotely.

• Self-contained unit requires minimum resources and outage time. Comes

standard with NEMA 4 enclosure, diagnostic software, a three- or six-bushing

sensor set, and with an RS-485 Modbus RTU port that allows on-site

communication. The complete package means faster and easier installation.

• Uses the same sensor set to perform online periodic monitoring of partial

discharge (arcing or sparking). That information helps analyze root causes

of internal gassing or other discharge activity related to the winding insulation,

internal connections, bushings, or magnetic core iron.

Eaton’s BushingGard Predictive Diagnostic solution uses predictive

diagnostics to help users prevent malfunctions or breakdowns in

large power transformer bushing equipment. The self-operating

systems and remote monitoring services provide real-time detection

and allow users to work towards solving problems instead of finding

them. The bushing sensor requires minimum resources, accounts for

minimal outage time, allows for onsite communication, and results in

faster and easier installation.

• Uses the same sensor set to perform online periodic monitoring of partial

discharge (arcing or sparking). That information helps analyze root causes

of internal gassing or other discharge activity related to the winding insulation,

internal connections, bushings, or magnetic core iron.

• Highly sensitive instrumentation can detect PD signals as low as 20-30 pC

even in extremely noisy environments like those in substations or power plants,

which means accurate reports that allow for better decision making.

• Available with a commercial-grade modem for remote communication.

• Customized bushing sensors available with appropriate lead-time.

Increases Safety

• The QSCP uses the Bussmann series Compact Circuit Protector Base

(CCPB) for its branch circuit disconnect up to 100 amps and the Compact

Circuit Protector (CCP) for its 200 amp branch circuit disconnect. Both are

used with Bussmann series Class CF CUBEFuse fuses

• Both CCP and CCPB are disconnect rated to provide a means for load

isolation. Ampacity rejections at 15. 20. 30. 40. 50. 60. 70. 90. 100 and

200 A coincide with standard conductor sizes to help prevent overfusing

• Local open fuse indication on branch circuit device and optional indicating

CUBEFuse

• Lockout/tagout provision eases OSHA compliance

• Lock-On provision helps meet requirements for emergency circuits

• High fuse interrupting rating and up to 200 kA assembly SCCR ratings

easily exceed most available fault current levels to help ensure compliance

with NEC® 110.9 and 110.10. Current-limitation of a fused solution also

reduces arc-flash hazards and minimizes damage to equipment and circuits.