High Ratio Wire Lead Transformers
CR Magnetics CR8400 Series of Wire Lead Current Transformers are
available in a wide range of sizes and materials to meet any AC current
sensing needs. Our General Purpose designs are made from the
highest quality silicon steel cores available, and meet most of the common AC
current measurement needs. Our Revenue Grade CTs (-N) are made
from a nickel alloy core which provides the most linear response over
temperature and current level. A line of Ground Fault (-G) CTs for
measuring low AC currents including electrical shields. The High
Frequency (-F) products are designed for high frequency applications such
as high frequency power supplies and motor drives.
CR8400 SERIES
Applications
Motor Load Measurement
Power Meters
High Frequency Current Sensing
Ground Fault Sensing
GENERAL PURPOSE CURRENT TRANSFORMERS
Features
High Ratio
I
Part Number
CR8401-1000
CR8410-1000
CR8420-1000
CR8420-2000
CR8448-1000
CR8448-2000
CR8449-1000
CR8449-2000
CR8450-1000
CR8450-2000
Vmax RMS
2.2
Te (typ.)
1009
1012
1018
1983
990
DCR Ω
49
Frequency
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
r
10
20
Standard Footprints
3.1
41
50
5.2
22
Specifications
75
9.0
90
Maximum Continuous Primary Current
Insulation Voltage
4 X Ir
3500 Vac/1min
-45°C thru +85 °C
30
6.3
26
50
13.7
11.6
23
2046
1016
2046
1021
2037
106
35
Storage Temp.
50
Operating Temp. General Purpose & Nickel -40°C thru +85 °C
75
150
21
Operating Temp. High Frequency
-40°C thru +65 °C
100
200
16.5
32
73
Regulatory Agencies
REVENUE GRADE CURRENT TRANSFORMERS
I
Part Number
CR8448-2500-N
CR8449-2500-N
CR8450-2500-N
CR8459-2000-N
Vmax RMS
6.6
Te (typ.)
2510
DCR Ω
134
Frequency
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
r
40
50
10.0
2490
187
DCR
75
12.0
2512
160
R
V
200
11.5
2011
74
GROUND FAULT CURRENT TRANSFORMERS
I x R
I
Part Number
CR8401-1000-G
CR8410-1000-G
CR8420-1000-G
Vmax RMS
Te (typ.)
1005
DCR Ω
49
Frequency
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
I x DCR
r
V =
VL =
Vmax -
4
0.6
0.8
1.4
T
T
e
e
7
1007
38
F
For best linearity, choose R such that V < 0.8 V
L
20
1011
44
V
L
HIGH FREQUENCY CURRENT TRANSFORMERS
I
Part Number
CR8448-2000-F
CR8449-2000-F
CR8450-2000-F
Vmax RMS
Te (typ.)
2015
DCR Ω
90
Frequency
20 - 200 KHz
20 - 200 KHz
20 - 200 KHz
r
50
75
3.9
7.4
8.5
2017
109
100
2020
63
I
= Maximum Input Current to be linearly sensed
V
= Maximum Voltage (Saturation) CT will develop
r
max
I
T
= Effective turns ratio including losses (All Specifications tested at 60 Hz)
e
B
PACKAGE DIMENSIONS AND OUTLINE (mm/in)
D
Part Number
Prefix
A
min
B
max
C
max
D
max
E
Typ
Part Number
Prefix
A
min
B
max
C
max
D
max
E
Typ
A
6.99 17.53 22.35 8.26 75.08
9.14 26.0 31.8 17.0
100
3.94
CR8401
CR8410
CR8420
CR8448
CR8449
CR8450
CR8459
C
.275
.690
.880
.325
2.275
.354
1.02
1.25
.67
9.0
.35
22
.87
27.8 8.20
73
2.87
13.08 36.83 43.18 13.97 88.9
1.09
.323
.515
1.45
1.70
.55
3.50
15.0 30.0 36.0
9.2
.36
100
3.94
19
.75
48
1.89
60
2.36
17.5
.67
200
7.88
.59
1.18
1.41
7.11 23.42 29.46 11.05 100
.280
.922
1.16
.435
3.94
E
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
E-mail: sales@crmagnetics.com
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