User`s guide

V3-T9-204 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
MD-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
Technical Data and Specifications . . . . . . . . . . . V3-T9-205
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . V3-T9-206
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 . . . . . . . . . . . . . . . . . . . . . . . . . V3-T9-250
Universal RTD Module . . . . . . . . . . . . . . . . . . . . . . V3-T9-254
IQ 125 Volt DC Power Supply. . . . . . . . . . . . . . . . . V3-T9-258
MD-3000 Motor/Generator Differential Relay
Product Description
Eaton's MD-3000 Protective
Relay is a microprocessor-
based sensitive three-phase
instantaneous OC-trip relay
designed for both ANSI
and IEC applications. The
MD-3000 is suitable for
use as a motor/generator
differential relay.
The MD-3000 Relay operates
from the 5 ampere secondary
output of standard current
transformers. Current
transformer ratio information
is quickly programmed into
the unit via settings. The
MD-3000 features a user-
friendly operator panel to
monitor, program and test the
relay. Operating parameters
and troubleshooting
information are displayed in
the two display windows.
Application Description
The MD-3000 microprocessor-
based relay provides reliable
instantaneous trip protection
for all voltage levels. It is
most commonly used as
motor differential protection
relay.
Features, Benefits
and Functions
●
ANSI or IEC applications
●
Phase differential currents
●
Monitoring and reporting of
magnitude and phase of
current causing trip
●
Relay failure alarm contact
●
Trip alarm contact
●
User-friendly front panel
●
Non-volatile memory
●
View settings any time
●
Set CT ratios
●
Integral test mode (phase
and ground)
●
Program and test mode
security access cover with
meter seal provision
●
Continuous internal
circuitry self-testing
●
Programmable lockout/self
reset after trip
System Protection
●
Instantaneous sensitive
phase overcurrent trip
●
Configurable trip outputs
Information and Data Delivery
●
Displays current
transformer ratio
●
Data/information
transmission
Standards and Certifications
●
ANSI C37.90 (1989),
C37.90.1 (1989),
C37.90.2 (1995)
●
IEC 255
●
UL 1053
Product Selection
Catalog Numbers
Description
Catalog
Number
Fixed Case MD3000
Drawout Case MD3001
MD-3000