Eaton Power Xpert Gateway Series 1000 Card User's Guide download pdf (Page 226)

V3-T9-226 Volume 3—Power Distribution and Control Assemblies CA08100004E—November 2013 www.eaton.com

9.4

Metering Devices, Protective Relays, Software and Connectivity

Protective Relays

EDR-3000

Contents

Description Page

Product Selection Guide . . . . . . . . . . . . . . . . . . . . V3-T9-158

FP-6000 Feeder Protection . . . . . . . . . . . . . . . . . . V3-T9-162

FP-5000 Feeder Protection . . . . . . . . . . . . . . . . . . V3-T9-172

FP-4000 Feeder Protection . . . . . . . . . . . . . . . . . . V3-T9-180

MP-3000 Motor Protection . . . . . . . . . . . . . . . . . . V3-T9-188

MP-4000 Motor Protection . . . . . . . . . . . . . . . . . . V3-T9-198

MD-3000 Motor/Generator Differential Relay . . . . V3-T9-204

Digitrip 3000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V3-T9-207

VR-300 Multifunctional Voltage Relay . . . . . . . . . . V3-T9-217

DP-300 Current Differential Protection Relay . . . . . V3-T9-221

EDR-3000 Feeder Protection

Features, Benefits and Functions . . . . . . . . . . . V3-T9-228

Standards and Certifications . . . . . . . . . . . . . . . V3-T9-228

Catalog Number Selection . . . . . . . . . . . . . . . . V3-T9-229

Technical Data and Specifications . . . . . . . . . . . V3-T9-230

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . V3-T9-235

ETR-4000 Transformer Protection Relay . . . . . . . . V3-T9-237

Ground Fault Relay . . . . . . . . . . . . . . . . . . . . . . . . . V3-T9-250

Universal RTD Module . . . . . . . . . . . . . . . . . . . . . . V3-T9-254

IQ 125 Volt DC Power Supply. . . . . . . . . . . . . . . . . V3-T9-258

EDR-3000 Feeder Protection

Product Description

The EDR-3000 Protective

Relay is a multifunction,

microprocessor-based

overcurrent relay designed

for both ANSI and IEC

applications. It is a panel-

mounted, self-contained unit

that operates from either AC

or DC control power. The

EDR-3000 design provides

true rms and fundamental

sensing of each phase and

ground current. Only one unit

is required for each three-

phase circuit.

Current monitoring and

operator selectable protective

functions are integral to each

relay. The EDR-3000 relay

operates from the 5A or 1A

secondary output of standard

current transformers. Current

transformer ratio information

is quickly programmed into

the unit via settings. This

enables the relay to display

metered current in primary

amperes, secondary amperes

or per unit values. The EDR-

3000 features a user-friendly

operations panel to monitor

and program the relay.

Operating parameters and

troubleshooting information

are displayed in the 128 x 64

LCD. In addition, all data and

information can be

communicated to a host

computer equipped

with PowerPort-E™.

A “Communication Trip” and

“Communication Close”

control command can also be

initiated by a host computer

with an authorized access

code for remote breaker

operation.

Application Description

The EDR-3000

microprocessor-based relay

provides reliable three-phase

and ground overcurrent

protection for all voltage

levels. It can be used for

any application where

instantaneous and/or time

overcurrent protection is

required. It is most commonly

used as primary feeder circuit

protection, shown below.

Primary Feeder Circuit

Protection

The EDR-3000 may be

applied as the transformer

primary protection or as

backup to the differential

protection, see below.

Transformer Overcurrent

Protection

The EDR-3000 may be

connected to the secondary

side of a delta-wye grounded

transformer with the ground

element connected to a

separate CT in the neutral

connection of the

transformer. With this

connection, a lower CT

ratio and a pickup setting

can be used to provide

more sensitive ground fault

protection especially for

resistance grounded

systems, shown below.

Transformer Secondary

Protection with Neutral CT

Connection

The EDR-3000 relay has

special provisions for

connection in a Zone

Interlocking scheme that can

be used for bus protection

or to improve protection

coordination in a tight or close

system. Zone Interlocking

is described in following

sections. In addition the

EDR-3000 has multiple

setting groups that can be

used to reduce arc flash

hazard with instantaneous

elements.

Residual Ground Connection

50 51

50G 51G

EDR-3000

Load

50 51

50G 51G

EDR-3000

50G 51G

50 51

EDR-3000

Resistor

GND

EDR-3000

CB-52

12 11

50N/51N

50/51

1 2 ... 221 222 223 224 225 226 227 228 229 230 231 ... 298 299

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