Instruction Leaflet
DT3000
Page 62
Effective: Date 07/02
I.B. 17555D
For more information visit:
www.cutler-hammer.eaton.com
Supersedes I.B. 17555C dated November 1999
APPENDIX A
A1.0 INTRODUCTION
Appendix A describes the Drawout Case option for the
Digitrip 3000 Protective Relay. The table below (A-1) lists
the Drawout Case versions.
Table A-1 Ordering Information
NEW Style #
OLD Style #
Catalog #
Description
4D13124G21
4D13124G11
DT3001
Protective Relay –
High range PS,
Std. Firmware,
Drawout case
66D2001G21
66D2001G11
DT3001-IC
DT3001
Protective Relay -
Inner Case Only
66D2005G21
66D2005G11
DT3001-OC
DT3001 - Outer
Case Only
4D13124G24
4D13124G04
DT3031
Protective Relay –
low range PS,
Std. Firmware,
Drawout case
66D2001G24
66D2001G14
DT3031-IC
DT3031
Protective Relay -
Inner Case Only
66D2005G24
66D2005G14
DT3031-OC
DT3031 Outer
Case Only
A2.0 GENERAL DESCRIPTION
The purpose of the DT3001 is to allow the device to be
removed from gear, using a “quick disconnect” type
strategy. The Digitrip 3001 Drawout Relay maintains the
same electrical and operating specifications as the
standard Digitrip 3000 with the addition of the following
Drawout connector specifications.
TABLE A-2 ADDITIONAL SPECIFICATIONS
Relay Make/Break Rating
10A @ 240Vac nominal
0.25A @ 250Vdc break maximum
Terminal Wire Gauge
No. 14 to 10 AWG
Screw Torque Requirements
18 inch-pounds
Meets ANSI C37.90.2 (1995) to 35 V/M
The Drawout Outer Case consists of two assemblies, a
molded plastic outer flange with “quick release” actuators
and locking mechanism, and the aluminum housing with
terminal blocks.
The Drawout terminal block features self-shorting or short-
before-break contacts, for Ct connections that maintain
circuit continuity when the device is removed. These self-
shorting contacts will prevent damaging voltages from
existing across the current transformer windings.
The terminal blocks feature a 2-stage disconnect
operation. Removal of the DT3001 Inner Chassis will
disconnect the trip circuits and short the Ct secondary
before the unit control power is disconnected. Upon
insertion of the inner chassis, the control power
connections are made before the trip circuits are activated.
This feature provides added security against false
tripping.
Fig. A-1 Digitrip 3001 Drawout Relay
A3.0 INSTALLATION
NOTE: Please refer to the following section if you are
using the Digitrip 3001 Drawout Relay.
A3.1 PANEL PREPARATION
When mounting the Drawout Case in a panel, it is
necessary to prepare a cutout for the device per Fig. 5-1
Cutout Dimensions
. If a standard IQ cutout exists, no
additional panel setup is required; the Drawout will mount
in the existing hole cutouts.
A3.2 DIGITRIP 3001 DRAWOUT RELAY PARTS LIST
BEFORE MOUNTING THE DRAWOUT RELAY, REVIEW
the table below for ALL OF THE INCLUDED PARTS:
TABLE A-3 DT3001 DRAWOUT RELAY PARTS LIST
Description
Quantity
Digitrip 3001 Drawout Inner Chassis
1
Digitrip 3001 Drawout Enclosure
1
Outer Flange
1
Mounting Hardware — #10-32 nuts & lock
washers
6 each
Digitrip 3001 Instruction Book — I.B. 17555
1
Drawout Relay Addendum to I.B. 17555
1
A3.3 MOUNTING THE DRAWOUT OUTER CASE
•
The DT3001 Drawout Relay mounts in the exact same
mounting holes as a standard DT3000.
•
Remove the Drawout Inner Chassis from the outer
case.
•
Refer to Figure A-3. Place the outer case flush
against the backside of the panel so that the case
studs project through their respective holes.
•
The plastic outer flange is seated on the front of the
panel and is attached to the top, center and bottom
studs that protrude through the panel.
