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
88
Current Transformers
G
CR Magnetics CR8300 Series of PCB Mounted 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. The High Frequency
(-F) products are designed for high frequency applications such as high frequency
power supplies and motor drives. CR Magnetics offers DC Immune (-D) models
that are designed to provide sensing of AC currents where DC offsets also exist. All
products are offered in standard sizes, with the most popular turns ratios. UL, CSA,
CE, and RoHS acceptance are all standard.
CR8300 SERIES
High Ratio Vertical PCB Mount Current Transformer
V =
I x R
T
e
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
Features
High Ratio
Standard Footprints
Specifications
Maximum Continuous Primary Current 4 X Ir
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
Part Number Prefix
A
min
B
max
C
max
D
max
E
E0.3
F
E0.3
G
E0.3
H
typ
CR8320
5.5
.22
19.4
.76
19.5
.77
8.2
.32
12.7
.50
N/A N/A
4.0
.16
CR8348
6.7
.27
23.5
.93
25
.98
11
.43
15.2
.60
9.5
.37
19
.75
1.90
.07
CR8349
9
.35
26
1.02
28
1.10
17
.67
15.2
.60
15.5
.61
19
.75
1.90
.07
CR8350
12.8
.50
37.5
1.48
39
1.54
14
.55
25.4
1.00
12.7
.50
33.02
1.30
3.81
.15
PACKAGE AND PIN OUT DIMENSIONS (mm/in)
PINOUT
CR8320 2 pins only
V
L
I
GENERAL PURPOSE VERTICAL PCB CURRENT TRANSFORMERS
Part Number
I
r
Vmax RMS Te (typ.)
DCR
Ω
Frequency
CR8320-1600 10 1.8 1613 95 20 - 1 KHz
CR8348-1000 20 7.0 1023 24 20 - 1 KHz
CR8348-2000 50 13.7 2046 106 20 - 1 KHz
CR8349-1000 50 11.6 1016 35 20 - 1 KHz
CR8349-1500 75 15.5 1520 80 20 - 1 KHz
CR8350-1000 100 16.5 1021 22 20 - 1 KHz
CR8350-2000 200 31.0 2037 73 20 - 1 KHz
REVENUE GRADE VERTICAL PCB CURRENT TRANSFORMERS
Part Number
I
r
Vmax RMS Te (typ.)
DCR Ω
Frequency
CR8348-2500-N 40 7.5 2510 134 20 - 1 KHz
CR8349-1000-N 50 5.1 1009 32 20 - 1 KHz
CR8349-2500-N 75 11.2 2512 190 20 - 1 KHz
CR8350-2500-N 100 10.5 2511 57 20 - 1 KHz
HIGH FREQUENCY VERTICAL PCB CURRENT TRANSFORMERS
Part Number
I
r
Vmax RMS Te (typ.)
DCR Ω
Frequency
CR8348-2000-F 50 3.7 2022 88 20 - 200KHz
CR8349-2000-F 75 16.0 2024 109 20 - 200KHz
CR8350-2000-F 100 10.0 2027 73 20 - 200KHz
DC IMMUNE VERTICAL PCB CURRENT TRANSFORMERS
Part Number
I
r
Vmax RMS Te (typ.)
DCR Ω
Frequency
CR8348-2000-D 50 4.0 2015 57 20 - 1 KHz
CR8349-2000-D 75 7.6 2017 48 20 - 1 KHz
CR8350-2000-D 100 6.3 2020 25 20 - 1 KHz
