95 / 162
95
Current Transformers
F
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.comThe Professional
Energy Monitoring
Company
ISO 9001:2008QualityManagementSystem
M N TI
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 com-
mon 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.
CR8400 SERIES
I r
= Maximum Input Current to be linearly sensed
V max
= Maximum Voltage (Saturation) CT will develop
T e
= Effective turns ratio including losses (All Specifications tested at 60 Hz)
Applications
Motor Load Measurement
Power Meters
High Frequency Current Sensing
Ground Fault Sensing
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
V
L
V =
I x R
T e
I
V R
DCR
For best linearity, choose R such that V < 0.8 V
L
V
L
= Vmax
-
T e
I x DCR
B
A
D
C
E
GENERAL PURPOSE CURRENT TRANSFORMERS
Part Number
I r
Vmax RMS Te (typ.)
DCR
Ω
Frequency
CR8401-1000
10
2.2
1009
49
20 - 1 KHz
CR8410-1000
20
3.1
1012
41
20 - 1 KHz
CR8420-1000
50
5.2
1018
22
20 - 1 KHz
CR8420-2000
75
9.0
1983
90
20 - 1 KHz
CR8448-1000
30
6.3
990
26
20 - 1 KHz
CR8448-2000
50
13.7
2046
106
20 - 1 KHz
CR8449-1000
50
11.6
1016
35
20 - 1 KHz
CR8449-2000
75
23
2046
150
20 - 1 KHz
CR8450-1000
100
16.5
1021
21
20 - 1 KHz
CR8450-2000
200
32
2037
73
20 - 1 KHz
REVENUE GRADE CURRENT TRANSFORMERS
Part Number
I r
Vmax RMS Te (typ.)
DCR
Ω
Frequency
CR8448-2500-N 40
6.6
2510
134
20 - 1 KHz
CR8449-2500-N 50
10.0
2490
187
20 - 1 KHz
CR8450-2500-N 75
12.0
2512
143
20 - 1 KHz
CR8459-2000-N 200
11.5
2011
74
20 - 1 KHz
GROUND FAULT CURRENT TRANSFORMERS
Part Number
I r
Vmax RMS Te (typ.)
DCR
Ω
Frequency
CR8401-1000-G
4
0.6
1005
49
20 - 1 KHz
CR8410-1000-G
7
0.8
1007
38
20 - 1 KHz
CR8420-1000-G 20
1.4
1011
44
20 - 1 KHz
NANOCRYSTALLINE CURRENT TRANSFORMERS
Part Number
I r
Vmax RMS Te (typ.)
DCR
Ω
Frequency
CR8401-1000-A
4
1.2
1034
43
50 - 100 KHz
CR8410-1000-A
7
1.5
1015
39
50 - 100 KHz
CR8420-1000-A
20
1.8
1023
43
50 - 100 KHz
CR8420-2000-A
75
4.0
2010
89
50 - 100 KHz
CR8448-1000-A
30
5.0
1000
25
50 - 100 KHz
CR8448-2000-A
50
10.0
2000
103
50 - 100 KHz
CR8448-2500-A
40
11.0
2524
131
50 - 100 KHz
CR8449-1000-A
50
7.0
1002
35
50 - 100 KHz
CR8449-2000-A
75
11.0
2013
144
50 - 100 KHz
CR8449-2500-A
50
20.0
2501
182
50 - 100 KHz
CR8450-1000-A
100
13.0
1003
21
50 - 100 KHz
CR8450-2000-A
100
19.0
2000
72
50 - 100 KHz
CR8450-2500-A
75
22.0
2501
134
50 - 100 KHz
CR8459-2000-A
200
23.0
2001
73
50 - 100 KHz
HIGH FREQUENCY CURRENT TRANSFORMERS
Part Number
I r
Vmax RMS Te (typ.)
DCR
Ω
Frequency
CR8448-2000-F
50
3.9
2015
90
20 - 200 KHz
CR8449-2000-F
75
7.4
2017
109
20 - 200 KHz
CR8450-2000-F
100
8.5
2020
63
20 - 200 KHz
PACKAGE DIMENSIONS AND OUTLINE (mm/in)
Part Number Prefix
A
min
B
max
C
max
D
max
E
Typ
CR8401
6.99
.275
17.53
.690
22.35
.880
8.26
.325
75.08
2.275
CR8410
9.0
.35
22
.87
27.8
1.09
8.20
.323
73
2.87
CR8420
15.0
.59
30.0
1.18
36.0
1.41
9.2
.36
100
3.94
CR8448
7.11
.280
23.42
.922
29.46
1.16
11.05
.435
100
3.94
CR8449
9.14
.354
26.0
1.02
31.8
1.25
17.0
.67
100
3.94
CR8450
13.08
.515
36.83
1.45
43.18
1.70
13.97
.55
88.9
3.50
CR8459
19
.75
48
1.89
60
2.36
17.5
.67
200
7.88
See Chart