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.
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
Ir
10
20
50
75
30
50
50
75
100
200
Vmax RMS
2.2
3.1
5.2
9.0
6.3
13.7
11.6
23
16.5
32
Te (typ.)
1009
1012
1018
1983
990
2046
1016
2046
1021
2037
DCR
Ω
49
41
22
90
26
106
35
150
21
73
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
CR8400 SERIES
Applications
Motor Load Measurement
Power Meters
High Frequency Current Sensing
Ground Fault Sensing
Current Transformers
Features
High Ratio
Standard Footprints
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
Part Number
CR8448-2500-N
CR8449-2500-N
CR8450-2500-N
CR8459-2000-N
Ir
40
50
75
200
Vmax RMS
6.6
10.0
12.0
11.5
Te (typ.)
2510
2490
2512
2011
DCR
Ω
134
187
160
74
Frequency
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
DCR
R
V
GROUND FAULT CURRENT TRANSFORMERS
Part Number
CR8401-1000-G
CR8410-1000-G
CR8420-1000-G
Ir
4
7
20
Vmax RMS
0.6
0.8
1.4
Te (typ.)
1005
1007
1011
DCR
Ω
49
38
44
Frequency
20 - 1 KHz
20 - 1 KHz
20 - 1 KHz
V=
IxR
Te
V
L
= Vmax
-
I x DCR
Te
For best linearity, choose R such that V < 0.8 V
L
F
HIGH FREQUENCY CURRENT TRANSFORMERS
Part Number
CR8448-2000-F
CR8449-2000-F
Ir
50
75
Vmax RMS
3.9
7.4
Te (typ.)
2015
2017
DCR
Ω
90
109
Frequency
20 - 200 KHz
20 - 200 KHz
V
L
CR8450-2000-F
100
8.5
Ir
= Maximum Input Current to be linearly sensed
2020
63
20 - 200 KHz
Vmax
= Maximum Voltage (Saturation) CT will develop
Te
= Effective turns ratio including losses (All Specifications tested at 60 Hz)
I
B
C
max
PACKAGE DIMENSIONS AND OUTLINE (mm/in)
Part Number
Prefix
D
A
C
A
min
B
max
.690
C
max
.880
D
max
E
Typ
Part Number
Prefix
A
min
B
max
D
max
E
Typ
CR8401
CR8410
CR8420
CR8448
6.99
.275
17.53 22.35
22
.87
8.26
.325
75.08
2.275
CR8449
CR8450
CR8459
9.14
.354
.515
26.0
1.02
1.45
31.8
1.25
1.70
17.0
.67
.55
100
3.94
9.0
.35
27.8
1.09
8.20
.323
73
2.87
13.08 36.83 43.18 13.97
19
.75
88.9
3.50
15.0
.59
30.0
1.18
.922
36.0
1.41
1.16
9.2
.36
.435
100
3.94
48
1.89
60
2.36
17.5
.67
200
7.88
7.11
.280
23.42 29.46 11.05
100
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
91
E-mail: sales@crmagnetics.com
