I.B. 17555C
Effective November 1999
Page B3
TABLE B-2 DT3010 AND DT3020 SPECIFICATION AND TEST SUMMARY (CONTINUED)
CURRENT INPUTS:
• Cts: 5A Secondary
• Ct Burden: See Burden Curves Figures 8 & 9
<0.04 ohm @ Rated Current(5A)
<1.0 VA @ Rated Current(5A)
•I
n
: 5A(Secondary) or CT (Primary)
• Saturation: 30 x I
n
• Ct Thermal Rating: 10A continuous
500A for 1 Second
CT(PRIMARY) SETTINGS AVAILABLE:
• Phase & Ground: 10/25/50/75/100/150/200/250/300/
400/500/600/630/800/1000/1200/
1250/1500/1600/2000/2400/2500/
3000/3200/4000/5000
CURRENT MONITORING:
• True RMS Sensing: 3-Phase and Ground
• Display Accuracy: +1% of Full Scale [I
n
] from 0.04xI
n
to 1xI
n
+2% of Full Scale [I
n
] from 1xI
n
to 2xI
n
• Amp Demand: Average demand over
5 minute sampling window
• High Load Threshold: 85% of Long Delay or Inverse
Time Overcurrent Setting
OUTPUT TRIP CONTACTS:
(Trip OC/Comm, Trip Inst, & Comm Close)
• Momentary: Make 30A ac/dc for 0.25 sec
Break 0.25A @ 250Vdc
Break 5A @ 120/240Vac
• Continuous: 5A @ 120/240Vac
5A @ 30Vdc
• Meets ANSI C37.90, Paragraph 6.7
ENVIRONMENT:
• Environment: Indoor Use Only, Pollution Degree II,
Altitude 2,500m, Installation Category II
• Mounting Location: Device should be positioned near the
main disconnect
• Operating Temperature:-30 to +55 Degrees Celsius
• Operating Humidity: 0 to 95% Relative Humidity
[Non-Condensing]
• Storage Temperature: -40 to +70 Degrees Celsius
COMMUNICATIONS:
• PowerNet Compatible / Built-in INCOM
• Data Rate is 1200 or 9600 Baud
• Set INCOM address from front panel
PHASE OVERCURRENT PICKUP RANGES:
• Inverse Time
Overcurrent Setting: (0.2 to 2.2) x I
n
[29 settings]
• Short Delay Setting: (1 to 11) x In, None[25 settings]
• Instantaneous Setting: (1 to 25) x In, None[30 settings]
GROUND OVERCURRENT PICKUP RANGES:
• Inverse Time Overcurrent
• Setting: (0.1 to 2.0) x In [26 settings]
• Short Delay Setting: (0.1 to 11) x In, None [45 settings]
• Instantaneous Setting: (0.5 to 11) x In, None [33 settings]
TIME DELAY SETTINGS:
• Inverse Time Overcurrent
Time Multiplier: It, I
2
t, I
4
t Curve: 0.2 to 40[48 Settings]
Flat: 0.2 to 2.0[21 Settings]
ANSI (all): 0.1 to 5.0[50 Settings]
IEC (all): 0.025 to 1.00[40 Settings]
• Short Delay Time: 0.05 to 1.5 sec.[22 Settings]
TIMING ACCURACY:
•
Inverse Time Overcurrent
Time:
+10% @ >1.5 x Pickup
•Short Delay Time: +50ms
AUXILIARY RELAYS:
(Protection Off Alarm and Trip Alarm)
• Make/Break: 5A @ 120/240Vac & 30Vdc
• Continuous: 5A @ 120/240Vac
5A @ 30Vdc
ADDITIONAL TESTS:
• Dielectric Strength: Current Inputs: 3,000Vac for 1 minute
Phase to Phase
• Siesmic Test: Meets requirements for UBC and
California Building Code Zone 4
ZPA = 3.5
ZONE SELECTIVE INTERLOCKS:
• Phase: Inverse Time Overcurrent and
Short Delay
• Ground: Inverse Time Overcurrent and
Short Delay
NOTES: 1.For Ground Pickup < 0.2pu; Time Tolerance + 15%
.
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