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Loop-Powered AC Current Transmitter
DIN RAIL / PANEL MOUNT, AVERAGE RMS
SPECIFICATIONS
Basic Accuracy:..................... 0.5%
Thermal Drift:......................... 500 PPM/°C
Operating Temperature:......... 0°C to +60°C
Installation Category:............ CAT II
Pollution Degree:.................... 2
MTBF:.................................... Greater than 100 K hours
Altitude:.................................. 2000 meter max.
Response Time:..................... 250 ms max., 0-90% FS
Calibration:............... Average Sensing, RMS Calibrated
Insulation Voltage:.................. 2500 VDC
Loop Voltage:.............. 24 VDC
Frequency Range:...... 50Hz- 400Hz
Compliance Voltage:... 16 to 28 VDC
Typical Load:............... 0 To 300 ? @ 24 VDC
Cleaning:..................... Water-dampened cloth
Relative Humidity:....... 80% for temperatures up to
31°C and decreasing linearly to 50% at 40°C
Torque Specs.:................ 3.0 inch lbs. (0.4Nm)
Weight:.............................0.5 lbs.
Vdc
1
2
3
4
(36)
2.874
(73)
9
8
7
6
5
0.14
(3.5)
1.06
(26.8)
3.5)
0.79 1.2 2
1
2
3
4
9
8
7
6
5
+
OUTPUT 1
Vdc
+ -
-
1
2
3
4
9
8
7
6
5
+
+ -
+
+ Vdc
-
OUTPUT 2
OUTPUT 1
-
-
C
2.874
(73)
(20) (31
0.79 1.22 Split core
(20) (31) DIA.
CR4220
One Element - 4 - 20 mADC Outpu t
L1
L2
CR4260
Two Element 4 - 20 mADC Output
2.99 3.86 Split core
(76) (98)
0.20
(5.1)
3.268
(83)
1 hole: 0.79(20) Dia. for CR4220 (shown)
1
2
3
4
9
8
7
6
5
+
+
OUTPUT 1
Vdc
-
-
1
2
3
4
9
8
7
6
5
+
+
+
-
+
-
OUTPUT 2
OUTPUT 1
-
-
2 holes: 0.26(6.5) Dia. for CR4260
CR4220
One Element with external
current transformer *
CR4260
Two Element with external
current transformer *
Vdc
1.42
(36)
OUTLINE DRAWING
*Request CR Magnetics Low & Medium Voltage Current Transformers Catalog.
CONNECTION DIAGRAM
NOTE: The building installation must have a switch or circuit-breaker that is in close proximity and within easy reach of the operator. The switch or circuit breaker
shall be marked as the disconnecting device for the equipment .
CR Magnetics, Inc. 3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119
Web: http://www.crmagnetics.com
37
E-mail: sales@crmagnetics.com
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