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0.250
MIN
0.47 MAX
0.187"
0.90 MAX
1.125
MIN.
.140
0.280"
.850
.425
.040 DIA.
TYP.
H1
X1
X2
93
Current Transformers
F
Horizontal Mounting, PCB
The
CR8750
Series, PCB Current Transformer provides a low cost method
for monitoring electrical current. The transformer is intended to be mounted
on a Printed Circuit Board with the current-carrying wire routed through the
center window opening. A five-pin, non-symmetrical mounting pattern
ensures correct orientation to the PCB. Two different winding ratios are
available to accommodate various applications. The graph illustrates how
different values of burden resistors attached to the output terminal will pro-
vide a number of different output voltage ranges.
Applications
Ammeters
Energy Measurement
Watt/VAR/Watthour measurement
Features
Low Cost
Core secured via Epoxy Resin
Hand Tuned Accuracy
Specifications
Frequency: 50-60 Hz
Case Material: Black thermoplastic
Maximum Continuous Primary Current 4 X Ir
Insulation Voltage 3500 Vac/1min
Regulatory Agencies
TYPICAL RESPONSE
Outline Drawing
Recommended
Mounting Hole
Pattern (Top View)
Window Polarity
(Top View)
CR8750-1000 Burden Chart
0
1
2
3
4
5
6
7
0
5
10
15
20
25
30
35
40
45
50
PrimaryCurrent
OutputVoltage
10OHM
20OHM
47OHM
CR8750-1000
100OHM
200OHM
510OHM
1000OHM
PART NUMBERS
PART NUMBER
TURNS
CR8750-230
230
CR8750-1000
1000
3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119
Web:
http://www.crmagnetics.comE-mail:
sales@crmagnetics.comThe Professional
Energy Monitoring
Company
ISO 9001:2008QualityManagementSystem
M N TI
BASIC SPECIFICATIONS
Part Number Imax Vmax Te (typ.) DCR
Ω
Frequency
CR8750-230
30
2
235
3
50 - 2KHz
CR8750-1000
60
6
1010
32
50 - 2KHz
V =
I x R
T e
V R
DCR
For best linearity, choose R such that V < 0.8 V
L
V
L
= Vmax
-
T e
I x DCR
CR8750-230 ONLY
CR8750 Series