I.B. 17555C
Effective November 1999
Page A6
5.0
APPLICATION CONSIDERATIONS
NOTE: The following material replaces Figure 4-1 and
4-2 on pages 32 and 33.
Zone selective interlocking is available on the Digitrip
3001 Protective Relays for the inverse time and short
time functions on the phase and ground elements. Refer
to Figure A-8 for a typical phase zone selection interlock-
ing wiring diagram or Figure A-9 for a typical ground zone
interlocking wiring diagram. The terminal numbering is
different from that of the standard DT3001 Protective
Relay.
Fig. A-8
Typical Phase Zone Selective Interlocking
Connection Diagram
Fig. A-9
Typical Ground Zone Selective Interlocking
Connection Diagram
NOTES:
1.
Maximum distance between first and last phase or
ground zone interconnection cable should be 250
feet. Route separate from power conductors.
2.
Jumper on devices in last zone used to provide time
delay per inverse time overcurrent or short delay time
setting. If jumper is not used the Digitrip 3001 will ini-
tiate trip without time delay (nominally 0.1 seconds).
3.
Up to 10 Digitrip devices may be wired in parallel to
provide a single upstream restraint signal.
4.
Only one zone common used for both phase and
ground.
5.
DO NOT CONNECT ZONE COMMON TO EARTH
GROUND.
DT3000
M
Typical Main
Digitrip 3000
ZONE 1
ZONE 2
ZONE 3
Typical
Feeder
DT3000
Typical
Downstream
Breaker
DT3000
15
Phase
Out
In
Zone Com.
16
18
DT3000
F1
15
16
18
DT3000
F2
15
16
18
DT3000
B1
15
16
18
DT3000
B2
15
16
18
DT3000
B3
15
16
18
DT3000
M
Typical Main
Digitrip 3000
ZONE 1
ZONE 2
ZONE 3
Typical
Feeder
DT3000
Typical
Downstream
Breaker
DT3000
15
Ground
Out
In
Zone Com.
16
18
14
13
DT3000
F1
15
16
18
14
13
DT3000
F2
15
16
18
14
13
DT3000
B1
15
16
18
14
13
DT3000
B2
15
16
18
14
13
DT3000
B3
15
16
18
14
13
Summary of Contents for Cutler-Hammer Digitrip 3000
Page 18: ...I B 17555C Effective November 1999 Page 12 Fig 2 1 Typical Communications Wiring Diagram...
Page 27: ...I B 17555C Effective November 1999 Page 21 Fig 3 1 Digitrip 3000 Typical Wiring Diagram...
Page 36: ...I B 17555C Effective November 1999 Page 30 Fig 3 11 Local Programming Sequence Flow Chart...
Page 37: ...I B 17555C Effective November 1999 Page 31...
Page 52: ...I B 17555C Effective November 1999 Page 46 Fig 7 5 Short Delay Phase Curves SC 5394 92B...
Page 54: ...I B 17555C Effective November 1999 Page 48 Fig 7 7 Instantaneous Curves SC 5396 92B...
Page 59: ...I B 17555C Effective November 1999 Page 53 Fig 7 12 Short Delay Ground Curves SC 5403 92B...
Page 60: ...I B 17555C Effective November 1999 Page 54 Fig 7 13 ANSI Moderately Inverse Curves SC 6685 96...
Page 61: ...I B 17555C Effective November 1999 Page 55 Fig 7 14 ANSI Very Inverse Curves SC 6686 96...
Page 62: ...I B 17555C Effective November 1999 Page 56 Fig 7 15 ANSI Extremely Inverse Curves SC 6687 96...
Page 63: ...I B 17555C Effective November 1999 Page 57 Fig 7 16 IEC A Moderately Inverse Curves SC 6688 96...
Page 64: ...I B 17555C Effective November 1999 Page 58 Fig 7 17 IEC B Very Inverse Curves SC 6689 96...
Page 65: ...I B 17555C Effective November 1999 Page 59 Fig 7 18 IEC C Extremely Inverse Curves SC 6690 96...
Page 66: ...I B 17555C Effective November 1999 Page 60 Fig 7 19 IEC D Flat Curves SC 6691 96...
Page 68: ...I B 17555C Effective November 1999 Page 62...
Page 73: ...I B 17555C Effective November 1999 Page A5 Fig A 7 DT3001 Typical Wiring Diagram...
Page 76: ...I B 17555C Effective November 1999 Page A8...
Page 81: ...I B 17555C Effective November 1999 Page B5 Fig B 2 Digitrip 3010 3020 Dimensions Inches...
Page 83: ...I B 17555C Effective November 1999 Page B7 Fig B 3 Digitrip 3010 3020 Typical Wiring Diagram...
Page 89: ...I B 17555C Effective November 1999 Page B13...
Page 90: ...I B 17555C Effective November 1999 Page B14...
