### Current Shunt Resistors

```TOKEN
FL Current Shunt Resistors
Current Shunt
Resistors
Token’s Shunt Resistors (FL)
for high-current applications aid precision measurement.
Preview
Current shunt resistors are low resistance precision
resistors used to measure AC or DC electrical
currents by the voltage drop those currents create
across the resistance. Sometimes called an
ammeter shunt, it is a type of current sensor.
A wide range of precision shunts, designed for
use with kilowatt-hour meters and other
high-current applications where a high level
of accuracy is required, is now available from
Token Electronics.
The interchangeable shunts (FL) are used to
multiply the measuring range of measuring
instrument and designed for PCB and busbar mounting, are manufactured from electron beam welded copper and
manganin, and have low temperature coefficients. Featuring low inductance values, shunts FL series can handle
permanent currents of up to 10000A at voltage 75 mV.
FLQ-54 type shunt is made of precision alloy board. It’s copper terminals spot welded by silver alloy ensure
extremely high electric capability. The construction provides a kind of excellent stability and high overloaded
ability non-inductive resistor, applied widely as current limited, current balance or sampling sense in
communication system, electric equipment and auto-controlling electrical circuit.
The FL Series is available in bulk packaging and is RoHS compliant and lead free. For non-standard technical
Power Rating : Watts (W) = Current (I2) x Resistance Value (R)
- The heat produced is power measured in Watts (W).
- In practice current shunts are often rated to be used continuously at only 2/3 of their “rated current”.
- Because current shunts are resistors and dissipate heat from the current flowing through them, they get hot.
- Since that heat can change their resistance and even permanently damage the shunt, current shunts are often
given a power rating or a derating factor.
Calculate Current : Current (I) = Voltage (V) / Resistance Value (R)
- Then knowing the resistance of the current shunt you can calculate the current using Ohm’s law.
- By inserting a current shunt into a circuit whose current you want to measure your can find the current by
measuring the voltage drop across the shunt.
Version 2010
http://www.token.com.tw/
rfq token.com.tw
01 of 03
TOKEN
FL Current Shunt Resistors
FL-2 (5A-100A, Unit: mm)
d1
d
S
d2
d
s
H
2-Φ5
b
b
d1
c
c
a
a
5A ~ 50A
75A ~ 100A
Dimensions (Unit: mm)
Rating
Current (A)
a
c
b
5
10
15
20
30
50
75
100
120
120
120
120
120
120
104
104
100
100
100
100
100
100
85
85
20
20
20
20
20
20
22
22
02 of 03
c1
c2
H
S
d
d1
d2
15
15
15
15
15
15
22
22
5
5
5
5
5
5
10
10
30
30
30
30
30
30
40
40
42
42
42
42
42
42
53
53
60
60
60
60
60
60
http://www.token.com.tw/
High Current
Bolt (mm)-PC
(Option)
M5x6-2
M5x6-2
M5x6-2
M5x6-2
M5x6-2
M5x6-2
M8x35-2
M8x35-2
rfq token.com.tw
Shunt Voltage
Bolt (mm)-PC
(Option)
M5x6-2
Version 2010
TOKEN
FL Current Shunt Resistors
FL-2 Dimensions (150A-1000A, Unit: mm)
d1
d1
b
b
S H
S H
d2
d2
b
c1
b
c
a
c
150A ~ 600A
a
750A ~ 1000A
Dimensions (Unit: mm)
Rating
Current (A)
a
c
b
150
200
250
300
400
500
600
750
1000
116
116
126
126
126
126
126
126
126
85
85
100
100
100
100
100
100
100
22
22
26
26
38
45
62
76
95
Version 2010
c1
50
50
c2
H
S
d
d1
d2
22
22
22
22
22
22
22
22
22
6
6
6
6
6
6
6
6
6
30
30
40
40
40
40
40
40
40
39
39
49
49
49
49
49
49
49
54
54
64
64
64
64
64
64
64
http://www.token.com.tw/
High Current
Bolt (mm)-PC
(Option)
M8x35-2
M8x35-2
M10x35-2
M10x35-2
M10x35-2
M10x35-2
M10x35-2
M10x35-4
M10x35-4
rfq token.com.tw
Shunt Voltage
Bolt (mm)-PC
(Option)
M5x6-2
03 of 03
TOKEN
FL Current Shunt Resistors
FL-2 Dimensions (1500A-10000A, Unit: mm)
d1
d
S H
d2
c1
c1
b
c2
b
c1
c1
c
c
a
a
1500A ~ 3000A
Rating
Current (A)
1500
2000
2500
3000
4000
5000
6000
7500
10000
02 of 03
4000A ~ 10000A
Dimensions (Unit: mm)
a
190
190
190
190
190
284
284
290
290
c
160
160
160
160
160
220
220
220
220
b
95
95
110
145
195
195
210
320
400
c1
50
50
50
2-50
2-50
2-50
2-50
3-50
3-50
c2
55
55
80
2-60
2-90
H
22
22
100
100
100
150
150
150
150
S
6
6
13
13
13
18
18
18
18
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d
40
40
40
40
40
40
40
40
40
d1
52
52
52
52
52
52
52
52
52
d2
64
64
84
84
84
88
88
88
88
High Current
Bolt (mm)-PC
(Option)
Shunt Voltage
Bolt (mm)-PC
(Option)
M12x60-4
M12x60-4
M12x60-4
M12x60-6
M16x80-8
M16x80-8
M16x80-8
M16x80-12
M16x80-12
M5x6-2
rfq token.com.tw
Version 2010
TOKEN
FL Current Shunt Resistors
FL-13 Dimensions (30A-75A, Unit: mm)
2-Φ5
10
H
B
C
L
30A ~ 75A
Voltage (mV)
Rating Current (A)
75mV
75mV
75mV
30A
50A
75A
Dimensions (Unit: mm)
L
B
100
20
130
14
130
14
H
21
30
30
Mounting size (mm)
C
Bolt
85
M5
85
M8
85
M8
FL-13-A Dimensions (100A-1000A, Unit: mm)
FL-13-A TYPE
H
C1
B
Bolts (Option)
C
L
Voltage
(mV)
Rating
Current (A)
75mV
75mV
75mV
75mV
75mV
75mV
75mV
75mV
100A
200A
300A
400A
500A
600A
750A
1000A
Version 2010
L
130
130
130
130
130
130
130
130
Dimensions (Unit: mm)
B
14
24
30
42
52
60
77
95
http://www.token.com.tw/
H
30
30
30
30
30
30
30
30
C
85
85
100
100
100
100
100
100
Mounting size (mm)
C1
Bolt
M8
M10
M10
M10
M10
50
M10
50
M10
M10
rfq token.com.tw
03 of 03
TOKEN
FL Current Shunt Resistors
FL-13-A Dimensions (100A-1000A, Unit: mm)
H max.
L1
L1
3
1.4
L
L
B
FLQ54-C
Type
FLQ54-A
FLQ54-B
FLQ54-C
1.5
5.8
B
7.7
FLQ54-A
FLQ54-B
H max.
37
60
32
Dimensions (Unit: mm)
B
L
18
3
30
5
15
3
L1
3
5
3
Style of terminal
6
6
2
FLQ54 Technical Specifications (30A-100A)
Type
Rated Current (A)
FLQ54-A
FLQ54-A
FLQ54-A
FLQ54-B
FLQ54-B
FLQ54-B
FLQ54-C
FLQ54-C
30
50
60
60
75
100
30
60
02 of 03
Rated Voltage Nominal Resis- Accuracy Temperature
Drop (mV)
tance (mΩ)
Class (%) Range (°C)
50
50
50
50
50
50
45
45
http://www.token.com.tw/
1.6667
1.0000
0.8333
0.8333
0.6667
0.5000
1.5000
0.7500
0.5
rfq token.com.tw
-55 ~ +85
Temperature
Coefficient
(ppm/°C)
±25
Version 2010
TOKEN
FL Current Shunt Resistors
Current Sunts (FL-2, FL-13, FL-13-A) Characteristic Specification
Test Items
Voltage Drop
Accuracy Class
Over Rating Capacity
Ambient Conditions
Specification
50mV, 60mV, 75mV, 100mV.
0.5% for 5 ~ 4000 A; 1% for 5000 ~ 6000 A
120% of rated current for 2 hours.
Temperature: -40~+60°C; relative humidity: ≤95% 35°C
Not be more than 80°C at rated current of below 50A; Not be
more than 120°C at rated current of 50A and over 50A.
It is capable of withstanding the transport bumping at acceleration of 70m/S2 and shock frequency of 80-120 times/min for 5
hours.
Capacity to Withstand Mechanical
Force
How to Order
FL-2
5A
50mV
F
P





 Part Number: FL-2, FL-13, FL-13-A, FLQ54-A, FLQ54-B, FLQ54-C
 Rating Current (A)
Code
5A
10A
200A
750A
Rating Current (A)
5A
10A
200A
750A
Voltage Drop (mV)
Code
50mV
60mV
75mV
100mV
Voltage Drop (mV)
50 mV
60 mV
75 mV
100 mV
Accuracy Class (%)
Code
Accuracy Class (%)
F
D
±1%
±0.5%
Package-Code
Code
Package-Code
P
Bulk
Back to 1st Page - Current Shunt Resistors (FL)
Version 2010
http://www.token.com.tw/
rfq token.com.tw
03 of 03
```