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
(-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) are for measuring low AC currents including electrical shields.
Nanocrystalline (-A)
is the most versatile providing accuracy, high saturation point and a
linear response in high frequency applications. The
High Frequency
(-F) products are
designed for high frequency applications such as high frequency power supplies and motor drives.
GENERAL PURPOSE CURRENT TRANSFORMERS
Part Number
CR8401-1000
CR8410-1000
CR8420-1000
CR8420-2000
CR8448-1000
CR8448-2000
CR8449-1000
CR8449-2000
CR8450-1000
CR8450-2000
Part Number
CR8448-2500-N
CR8449-2500-N
CR8450-2500-N
CR8459-2000-N
Part Number
CR8401-1000-G
CR8410-1000-G
CR8420-1000-G
Part Number
CR8401-1000-A
CR8410-1000-A
CR8420-1000-A
CR8420-2000-A
CR8448-1000-A
CR8448-2000-A
CR8448-2500-A
CR8449-1000-A
CR8449-2000-A
CR8449-2500-A
CR8450-1000-A
CR8450-2000-A
CR8450-2500-A
CR8459-2000-A
Part Number
CR8448-2000-F
CR8449-2000-F
CR8450-2000-F
Ir
CR8400 SERIES
Vmax RMS
2.2
3.1
5.2
9.0
6.3
13.7
11.6
23
16.5
32
Vmax RMS
6.6
10.0
12.0
11.5
Vmax RMS
0.6
0.8
1.4
Vmax RMS
2.2
2.5
1.3
7.0
6.0
13.0
16.0
11.0
16.0
27.0
15.0
26.0
28.0
27.0
Vmax RMS
3.9
7.4
8.5
Te (typ.)
1009
1012
1018
1983
990
2046
1016
2046
1021
2037
Te (typ.)
2510
2490
2512
2011
Te (typ.)
1005
1007
1011
Te (typ.)
1034
1015
1023
2010
1000
2000
2524
1002
2013
2501
1003
2000
2501
2001
Te (typ.)
2015
2017
2020
DCR
Ω
49
41
22
90
26
106
35
150
21
73
DCR
Ω
134
187
143
74
DCR
Ω
49
38
44
DCR
Ω
43
39
43
89
25
103
131
35
144
182
21
72
134
73
DCR
Ω
90
109
63
Frequency
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
Frequency
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
Frequency
20 Hz- 1 KHz
20 Hz- 1 KHz
20 Hz- 1 KHz
Frequency
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
50 Hz- 50 KHz
Frequency
20 Hz - 200 KHz
20 Hz- 200 KHz
20 Hz- 200 KHz
10
20
50
75
30
50
50
75
100
200
Ir
Applications
Motor Load Measurement
Power Meters
High Frequency Current Sensing
Ground Fault Sensing
Current Transformers
Features
High Ratio
Custom Lead Lengths Available
Specifications
Maximum Continuous Primary Current
4 X Ir
Insulation Voltage
3500 Vac/1min
Storage Temp.
-45°C thru +85 °C
Operating Temp. General Purpose & Nickel -40°C thru +85 °C
Operating Temp. High Frequency
-40°C thru +65 °C
Regulatory Agencies
REVENUE GRADE CURRENT TRANSFORMERS
40
50
75
200
Ir
GROUND FAULT CURRENT TRANSFORMERS
4
7
20
Ir
NANOCRYSTALLINE CURRENT TRANSFORMERS
4
7
20
75
20
50
50
75
75
75
100
100
100
100
Ir
I
DCR
R
V
HIGH FREQUENCY CURRENT TRANSFORMERS
50
75
100
V
L
= Vmax
-
I x DCR
Te
V=
IxR
Te
For best linearity, choose R such that V < 0.8 V
L
F
Ir
= Maximum AC Input Current to be linearly sensed
Vmax
= Maximum VAC (Saturation) CT will develop
Te
= Effective turns ratio including losses (+/- 10%) (All Specifications tested at 60 Hz)
V
L
PACKAGE DIMENSIONS AND OUTLINE (mm/in)
Part Number Prefix
A
min
B
max
C
max
D
max
E
Typ
CR8401
CR8410
CR8420
CR8448
CR8449
CR8450
CR8459
6.99
.275
9.0
.35
15.0
.59
7.11
.280
17.53
.690
22
.87
30.0
1.18
23.42
.922
22.35
.880
27.8
1.09
36.0
1.41
29.46
1.16
8.26
.325
8.20
.323
9.2
.36
11.05
.435
75.08
2.275
73
2.87
100
3.94
100
3.94
I
B
A
C
D
9.14
.354
13.08
.515
19
.75
The Professional
Energy Monitoring
Company
26.0
1.02
36.83
1.45
48
1.89
31.8
1.25
43.18
1.70
60
2.36
17.0
.67
13.97
.55
17.5
.67
100
3.94
88.9
3.50
200
7.88
See Chart
E
ISO 9001:2008 Quality Management System
M N TI
3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119
Web: http://www.crmagnetics.com
95
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E-mail: sales@crmagnetics.com
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