User`s guide

V3-T9-250 Volume 3—Power Distribution and Control Assemblies CA08100004E—November 2013 www.eaton.com
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9.4
Metering Devices, Protective Relays, Software and Connectivity
Protective Relays
Ground Fault Relay
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 . . . . . . . . . . . . . . . . . V3-T9-226
ETR-4000 Transformer Protection Relay . . . . . . . . V3-T9-237
Ground Fault Relay
Options and Accessories . . . . . . . . . . . . . . . . . V3-T9-252
Technical Data and Specifications . . . . . . . . . . . V3-T9-253
Universal RTD Module . . . . . . . . . . . . . . . . . . . . . . V3-T9-254
IQ 125 Volt DC Power Supply. . . . . . . . . . . . . . . . . V3-T9-258
Ground Fault Relay
Product Description
A Type GFR ground fault
protection system, when
properly installed on a
grounded electrical system,
will sense phase-to-ground
fault currents. When the level
of fault current is in excess
of the pre-selected current
pickup and time delay
settings, the GFR relay will
initiate a trip action of a
disconnect device, which will
open the faulted circuit and
clear the fault.
The GFR devices are UL
Class 1 devices designed to
protect electrical equipment
against extensive damage
from arcing ground faults.
A basic Type GFR ground
fault protection system
consists of a ground fault
relay, a ground fault current
sensor and a disconnect
device equipped with a shunt
trip device. This disconnect
device can be a molded case
circuit breaker, a power
circuit breaker, a bolted
pressure switch or other
fusible disconnect device,
suitable for application with
UL Class 1 Ground Fault
Sensing and Relaying
equipment.
Standards and Certifications
Eaton’s GFR ground fault
relays, current sensors, test
panels and accessory devices
are UL listed by Underwriters
Laboratories in accordance
with their standard for
Ground Fault Sensing and
Relaying Equipment, UL 1053,
under File No. E48381.
Note: Relays are also listed with
CSA under File No. 43357.