Current Transducer CAS series
IPN = 6, 15, 25, 50 A
Ref: CAS 6-NP, CAS 15-NP, CAS 25-NP, CAS 50-NP
For the electronic measurement of current: DC, AC, pulsed..., with galvanic isolation
between the primary and the secondary circuit.
Features
Applications
●● Closed loop (compensated) multi-range
●● AC variable speed and servo motor drives
current transducer
●● Static converters for DC motor drives
●● Voltage output
●● Battery supplied applications
●● Single supply
●● Uninterruptible Power Supplies (UPS)
●● Isolated plastic case material recognized
●● Switched Mode Power Supplies (SMPS)
according to UL 94-V0
●● Power supplies for welding applications.
●● Compact design for PCB mounting.
Advantages
Standards
●● EN 50178
●● Very low temperature coefficient of offset
●● UL 508
●● Very good dv/dt immunity
●● IEC 61010-1 (safety).
●● LTS compatible footprint
●● Reduced height.
Application Domain
●● Industrial.
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CAS series
Absolute maximum ratings
Parameter
Symbol
Unit
Value
VC
V
7
°C
110
A
20 x IPN
kV
4
Supply voltage
Primary conductor temperature
Non repetitive primary current pulse (20 µs), in
powered or unpowered state
IP
ESD rating, Human Body Model (HBM)
Stresses above these ratings may cause permanent damage. Exposure to absolute maximum ratings for extended periods may
degrade reliability.
Isolation characteristics
Parameter
Symbol
Unit
Value
RMS voltage for AC isolation test 50/60Hz/1 min
Vd
kV
4.2
Impulse withstand voltage 1.2/50 µs
Vw
kV
7.6
Partial discharge extinction voltage @ 10 pC (rms)
Ve
V
1000
Clearance distance (pri. - sec.)
dCI
mm
7.7
Shortest distance through
air
Creepage distance (pri. - sec.)
dCp
mm
7.7
Shortest path along device
body
Creepage distance (pri. .- sec.)
-
mm
6.3
When mounted on PCB
with recommended layout
Case material
-
-
V0 according
to UL 94
CTI
V
600
Application example
-
-
Reinforced isolation, non
300 V CAT III
uniform field according to
PD2
EN 50178, EN 61010
Application example
-
-
Simple isolation, non
600 V CAT III
uniform field according to
PD2
EN 50178, EN 61010
According to UL 508:
primary potential involved in Volts RMS AC or DC
-
V
Symbol
Unit
Min
Ambient operating temperature
TA
°C
-40
85
Ambient storage temperature
TS
°C
-55
105
Mass
m
g
Comparative tracking index
Comment
For use in a pollution
degree 2 environment
600
Environmental and mechanical characteristics
Parameter
Standards
Typ
Max
Comment
9
EN 50178, IEC 60950-1, IEC 61010-1, IEC 61326-1, UL 508
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CAS series
Electrical data CAS 6-NP
At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted.
Parameter
Max
Comment
Unit
Primary nominal current rms
IPN
A
Primary current, measuring range
IPM
A
Number of primary turns
NP
-
Supply voltage
VC
V
Current consumption
IC
mA
Output voltage
VOUT
V
Output voltage @ IP = 0 A
VOUT
V
Electrical offset voltage
VOE
mV
-10.4
10.4
100% tested
VOUT - 2.5 V
Electrical offset current
referred to primary
IOE
A
-0.1
0.1
100% tested
TCVOUT
ppm/K
±10
±80
ppm/K of 2.5 V
- 40°C .. 85°C
Theoretical sensitivity
Gth
mV/A
104.2
Sensitivity error
εG
%
TCG
ppm/K
Linearity error
εL
% of IPN
-0.1
0.1
Magnetic offset current (10 x IPN)
referred to primary
IOM
A
-0.1
0.1
Output current noise (spectral
density) rms 100 .. 100 kHz
referred to primary
ino
µA/Hz½
36
Peak-peak output ripple at
oscillator frequency
f = 450 kHz (typ.)
-
mV
40
Reaction time @ 10 % of IPN
tra
Response time @ 90 % of IPN
Temperature coefficient of VOUT
@ IP = 0 A
Temperature coefficient of G
Min
Typ
Symbol
6
-20
20
1,2,3
4.75
5
15 +
IP (mA)
NS
0.375
5.25
20 +
IP (mA)
NS
NS = 1731 turns
4.625
2.5
-0.7
625 mV/ IPN
0.7
100% tested
±40
- 40°C .. 85°C
RL = 1 kΩ
160
RL = 1 kΩ
µs
0.3
RL = 1 kΩ
di/dt = 18 A/µs
tr
µs
0.3
RL = 1 kΩ
di/dt = 18 A/µs
Frequency bandwidth (± 1 dB)
BW
kHz
200
RL = 1 kΩ
Frequency bandwidth (± 3 dB)
BW
kHz
300
RL = 1 kΩ
Overall accuracy
XG
% of IPN
2.5
Overall accuracy @ TA = 85°C
XG
% of IPN
4.6
Accuracy
X
% of IPN
0.8
Accuracy @ TA = 85°C
X
% of IPN
3.0
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CAS series
Electrical data CAS 15-NP
At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted.
Parameter
Max
Comment
Unit
Primary nominal current rms
IPN
A
Primary current, measuring range
IPM
A
Number of primary turns
NP
-
Supply voltage
VC
V
Current consumption
IC
mA
Output voltage
VOUT
V
Output voltage @ IP = 0 A
VOUT
V
Electrical offset voltage
VOE
mV
-7.1
7.1
100% tested
VOUT - 2.5 V
Electrical offset current
referred to primary
IOE
A
-0.17
0.17
100% tested
TCVOUT
ppm/K
±7.5
±70
ppm/K of 2.5 V
- 40°C .. 85°C
Theoretical sensitivity
Gth
mV/A
41.67
Sensitivity error
εG
%
TCG
ppm/K
Linearity error
εL
% of IPN
-0.1
0.1
Magnetic offset current (10 x IPN)
referred to primary
IOM
A
-0.1
0.1
Output current noise (spectral
density) rms 100 Hz .. 100 kHz
referred to primary
ino
µA/Hz½
90
-
mV
15
tra
Temperature coefficient of VOUT
@ IP = 0 A
Temperature coefficient of G
Peak-peak output ripple at
oscillator frequency
f = 450 kHz (typ.)
Min
Typ
Symbol
15
-51
51
1,2,3
4.75
5
15 +
5.25
IP (mA)
I (mA)
20 + P
NS
NS
0.375
NS = 1731 turns
4.625
2.5
-0.7
625 mV/ IPN
0.7
100% tested
±40
- 40°C .. 85°C
RL = 1 kΩ
60
RL = 1 kΩ
µs
0.3
RL = 1 kΩ
di/dt = 44 A/µs
tr
µs
0.3
RL = 1 kΩ
di/dt = 44 A/µs
Frequency bandwidth (± 1 dB)
BW
kHz
200
RL = 1 kΩ
Frequency bandwidth (± 3 dB)
BW
kHz
300
RL = 1 kΩ
Overall accuracy
XG
% of IPN
1.9
Overall accuracy @ TA = 85°C
XG
% of IPN
3.9
Accuracy
X
% of IPN
0.8
Accuracy @ TA = 85°C
X
% of IPN
2.7
Reaction time @ 10 % of IPN
Response time @ 90 % of IPN
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CAS series
Electrical data CAS 25-NP
At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted.
Parameter
Max
Comment
Unit
Primary nominal current rms
IPN
A
Primary current, measuring range
IPM
A
Number of primary turns
NP
-
Supply voltage
VC
V
Current consumption
IC
mA
Output voltage
VOUT
V
Output voltage @ IP = 0 A
VOUT
V
Electrical offset voltage
VOE
mV
-6.25
6.25
100% tested
VOUT - 2.5 V
Electrical offset current
referred to primary
IOE
A
-0.25
0.25
100% tested
TCVOUT
ppm/K
±6.5
±60
ppm/K of 2.5 V
- 40°C .. 85°C
Theoretical sensitivity
Gth
mV/A
25
Sensitivity error
εG
%
TCG
ppm/K
Linearity error
εL
% of IPN
-0.1
0.1
Magnetic offset current (10 x IPN)
referred to primary
IOM
A
-0.1
0.1
Output current noise (spectral
density) rms 100 Hz .. 100 kHz
referred to primary
ino
µA/Hz½
150
Peak-peak output ripple at
oscillator frequency
f = 450 kHz (typ.)
-
mV
10
Reaction time @ 10 % of IPN
tra
Response time @ 90 % of IPN
Temperature coefficient of VOUT
@ IP = 0 A
Temperature coefficient of G
Min
Typ
Symbol
25
-85
85
1,2,3
4.75
5
15 +
5.25
IP (mA)
IP (mA)
20 +
NS
NS
0.375
NS = 1731 turns
4.625
2.5
-0.7
625 mV/ IPN
0.7
100% tested
±40
- 40°C .. 85°C
RL = 1 kΩ
40
RL = 1 kΩ
µs
0.3
RL = 1 kΩ
di/dt = 68 A/µs
tr
µs
0.3
RL = 1 kΩ
di/dt = 68 A/µs
Frequency bandwidth (± 1 dB)
BW
kHz
200
RL = 1 kΩ
Frequency bandwidth (± 3 dB)
BW
kHz
300
RL = 1 kΩ
Overall accuracy
XG
% of IPN
1.8
Overall accuracy @ TA = 85°C
XG
% of IPN
3.5
Accuracy
X
% of IPN
0.8
Accuracy @ TA = 85°C
X
% of IPN
2.5
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CAS series
Electrical data CAS 50-NP
At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted.
Parameter
Max
Comment
Unit
Primary nominal current rms
IPN
A
Primary current, measuring range
IPM
A
Number of primary turns
NP
-
Supply voltage
VC
V
Current consumption
IC
mA
Output voltage
VOUT
V
Output voltage @ IP = 0 A
VOUT
V
Electrical offset voltage
VOE
mV
-5.8
5.8
100% tested
VOUT - 2.5 V
Electrical offset current
referred to primary
IOE
A
-0.46
0.46
100% tested
TCVOUT
ppm/K
±6
±60
ppm/K of 2.5 V
- 40°C .. 85°C
Theoretical sensitivity
Gth
mV/A
12.5
Sensitivity error
εG
%
TCG
ppm/K
Linearity error
εL
% of IPN
-0.1
0.1
Magnetic offset current (10 x IPN)
referred to primary
IOM
A
-0.1
0.1
Output current noise (spectral
density) rms 100 Hz .. 100 kHz
referred to primary
ino
µA/Hz½
300
Peak-peak output ripple at
oscillator frequency
f = 450 kHz (typ.)
-
mV
5
Reaction time @ 10 % of IPN
tra
Response time @ 90 % of IPN
Temperature coefficient of VOUT
@ IP = 0 A
Temperature coefficient of G
Min
Typ
Symbol
50
-150
150
1,2,3
4.75
5
15 +
5.25
IP (mA)
IP (mA)
20 + N
NS
S
0.375
NS = 966 turns
4.625
2.5
-0.7
625 mV/ IPN
0.7
100% tested
±40
- 40°C .. 85°C
RL = 1 kΩ
20
RL = 1 kΩ
µs
0.3
RL = 1 kΩ
di/dt = 100 A/µs
tr
µs
0.3
RL = 1 kΩ
di/dt = 100 A/µs
Frequency bandwidth (± 1 dB)
BW
kHz
200
RL = 1 kΩ
Frequency bandwidth (± 3 dB)
BW
kHz
300
RL = 1 kΩ
Overall accuracy
XG
% of IPN
1.7
Overall accuracy @ TA = 85°C
XG
% of IPN
3.4
Accuracy
X
% of IPN
0.8
Accuracy @ TA = 85°C
X
% of IPN
2.5
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CAS series
Relative Sensitivity (dB)
0.05
0
-0.05
-0.1
0
IP (A)
6
1000
10000 100000 1000000
Frequency (Hz)
Figure 2: Frequency response
3.2
6
3.1
6
3.1
5
3.0
5
3.0
2.9
4
4
IP = 6 A
3
2.8
IP (A)
7
VOUT (V)
3.2
7
IP (A)
Relative
Sensitivity
Phase
100
Figure 1: Linearity error
IP
2.7
VOUT
2.6
2.7
1
VOUT
2.6
1
0
2.5
0
-1
2.4
-1
0.5
1
1.5
2.8
2
IP
0
2.9
IP = 6 A
3
2
-0.5
2.5
2.4
-2
2
0
2
4
6
8
10
t (µs)
t (µs)
Figure 3: Step response
Figure 4: Step response
800
Primary Voltage VP (V)
10000
1000
½
ino (μA/Hz )
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
IP = 6 A
100
10
3.6
600
3.4
400
3.2
200
0
3.0
20 kV/μs
-200
VP
-400
VOUT
2.8
2.6
-600
-800
1
1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7
2.4
-1
0
1
2
3
4
5
t (µs)
Frequency (Hz)
Figure 5: Input referred noise VOUT (V)
-6
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
VOUT (V)
Linearity error (% of IPN)
0.1
Phase (°)
Typical performance characteristics CAS 6-NP
Figure 6: dv/dt
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CAS series
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
Relative Sensitivity (dB)
0.05
0
-0.05
-0.1
0
IP (A)
15
Relative
Sensitivity
Phase
100
Figure 7: Linearity error
1000
10000 100000 1000000
Frequency (Hz)
Figure 8: Frequency response
17.5
3.2
15
3.1
15
3.1
12.5
3.0
12.5
3.0
IP (A)
10
2.9
IP = 15 A
7.5
5
2.5
2.8
VOUT
2.6
2.5
2.5
0
0.5
1
2.4
-2.5
1.5
2.7
VOUT
2.6
2
4
6
8
10
t (µs)
Figure 10: Step response
800
Primary Voltage VP (V)
10000
1000
½
ino (μA/Hz )
IP
2.4
0
t (µs)
Figure 9: Step response
2.8
2.5
-2
2
2.9
IP = 15 A
5
2.7
-2.5
0
10
7.5
IP
0
-0.5
IP (A)
3.2
VOUT (V)
17.5
100
10
3.6
600
3.4
400
3.2
200
0
3.0
20 kV/μs
-200
VP
-400
VOUT
2.8
2.6
-600
-800
1
1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7
2.4
-1
0
Frequency (Hz)
Figure 11: Input referred noise VOUT (V)
-15
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
IP = 15 A
VOUT (V)
Linearity error (% of IPN)
0.1
Phase (°)
Typical performance characteristics CAS 15-NP
1
2
3
4
5
t (µs)
Figure 12: dv/dt
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CAS series
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
Relative Sensitivity (dB)
0.05
0
-0.05
-0.1
0
IP (A)
100
25
Figure 13: Linearity error
1000
10000 100000 1000000
Frequency (Hz)
Figure 14: Frequency response
3.2
29.2
3.2
25.0
3.1
25.0
3.1
20.8
3.0
20.8
3.0
16.7
2.9
16.7
IP = 25 A
12.5
2.8
2.6
4.2
VOUT
2.6
2.5
0.0
2.4
-4.2
4.2
VOUT
0
0.5
1
1.5
2
2.5
2.4
-2
0
2
t (µs)
Figure 15: Step response
4
6
8
10
t (µs)
Figure 16: Step response
800
Primary Voltage VP (V)
10000
1000
½
ino (μA/Hz )
2.8
2.7
2.7
-0.5
12.5
IP
IP
-4.2
2.9
IP = 25 A
8.3
8.3
0.0
IP (A)
29.2
VOUT (V)
IP (A)
Relative
Sensitivity
Phase
100
10
3.6
600
3.4
400
3.2
200
0
3.0
20 kV/μs
-200
VP
-400
VOUT
2.8
2.6
-600
-800
1
1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7
2.4
-1
0
Frequency (Hz)
Figure 17: Input referred noise VOUT (V)
-25
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
IP = 25 A
VOUT (V)
Linearity error (% of IPN)
0.1
Phase (°)
Typical performance characteristics CAS 25-NP
1
2
3
4
5
t (µs)
Figure 18: dv/dt
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CAS series
Relative Sensitivity (dB)
0.05
0
-0.05
-0.1
0
IP (A)
Figure 19: Linearity error
1000
10000 100000 1000000
Frequency (Hz)
Figure 20: Frequency response
3.2
58.3
3.2
50.0
3.1
50.0
3.1
41.7
3.0
41.7
3.0
33.3
2.9
33.3
IP = 50 A
25.0
16.7
8.3
2.8
IP
2.7
VOUT
IP (A)
58.3
VOUT (V)
IP (A)
Relative
Sensitivity
Phase
100
50
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
IP = 50 A
25.0
16.7
2.8
IP
2.7
VOUT
2.6
2.6
8.3
0.0
2.5
0.0
2.5
-8.3
2.4
-8.3
2.4
-0.5
0
0.5
1
1.5
2
-2
0
2
t (µs)
Figure 21: Step response
4
6
8
10
t (µs)
Figure 22: Step response
800
Primary Voltage VP (V)
10000
1000
ino (μA/Hz½)
2.9
IP = 50 A
100
10
3.6
600
3.4
400
3.2
200
0
3.0
20 kV/μs
-200
VP
-400
VOUT
2.8
2.6
-600
-800
1
1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7
2.4
-1
0
Frequency (Hz)
Figure 23: Input referred noise VOUT (V)
-50
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
VOUT (V)
Linearity error (% of IPN)
0.1
Phase (°)
Typical performance characteristics CAS 50-NP
1
2
3
4
5
t (µs)
Figure 24: dv/dt
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CAS series
Maximum continuous DC primary current
40
35
CAS 6-NP
30
CAS 15-NP
70
25
IP (A)
IP (A)
90
80
20
15
60
50
40
30
20
10
5
10
0
0
0
20
40
60
80
100
0
120
20
40
TA (°C)
Figure 25: IP vs TA for CAS 6-NP
80
100
120
Figure 26: IP vs TA for CAS 15-NP
90
80
70
160
140
60
50
40
30
CAS 50-NP
120
CAS 25-NP
IP (A)
IP (A)
60
TA (°C)
100
80
60
40
20
10
0
20
0
0
20
40
60
80
100
120
0
20
TA (°C)
40
60
80
100
120
TA (°C)
Figure 27: IP vs TA for CAS 25-NP
Figure 28: IP vs TA for CAS 50-NP
The maximum continuous DC primary current plot shows the boundary of the area for which all the following conditions are
true:
-- IP < IPM
-- Junction temperature Tj < 125 °C
-- Primary conductor temperature < 110 °C
-- Resistor power dissipation < 0.5 x rated power
Frequency derating
AC Derating
max RMS AC current /
max DC current
1.25
1
0.75
0.5
0.25
0
10
100
1k
10k
100k
1M
f (Hz)
Figure 29: Maximum RMS AC primary current / maximum DC primary current vs frequency
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CAS series
Performance parameters definition
Ampere-turns and amperes
Sensitivity and linearity
The transducer is sensitive to the primary current linkage
QP (also called ampere-turns).
To measure sensitivity and linearity, the primary current (DC)
is cycled from 0 to IP, then to -IP and back to 0 (equally spaced
IP/10 steps).
The sensitivity G is defined as the slope of the linear
regression line for a cycle between ± IPN.
QP=NPIP(At)
Where NPIP the number of primary turn (1, 2 or 3
depending on the connection of the primary
jumpers)
Caution: As most applications will use the transducer with
only one single primary turn (NP = 1), much of this datasheet
is written in terms of primary current instead of current
linkages. However, the ampere-turns (A-t) unit is used to
emphasis that current linkages are intended and applicable.
Transducer simplified model
The static model of the transducer at temperature TA is:
VOUT = G QP + error
The linearity error εL is the maximum positive or negative
difference between the measured points and the linear
regression line, expressed in % of IPN.
Magnetic offset
The magnetic offset current IOM is the consequence of a
current on the primary side (“memory effect” of the
transducer’s ferro-magnetic parts). It is included in the
linearity figure but can be measured individually.
It is measured using the following primary current cycle.
IOM depends on the current value IP1.
In which error =
I
VOE + VOT (TA) + εG ·QP·G + εL(QPmax)·QPmax·G + TCG·(TA-25)·QP·G
With:
QP = NPIP
QPmax
VOUT
TA
VOE
VOT(TA)
G
εG
εL (QPmax)
:the input ampere-turns (At)
Please read above warning.
:the maxi input ampere-turns that have
been applied to the transducer (At)
:the secondary voltage (V)
:the ambient temperature (°C)
:the electrical offset voltage (V)
:the temperature variation of VO at
temperature TA (V)
:the sensitivity of the transducer (V/At)
:the sensitivity error
:the linearity error for QPmax
OM
=
V (t ) − V (t ) 1
⋅
2
Gth
OUT
OUT
1
2
IP (DC)
IP1
0A
-IP1
t
t1
Ip(3)
t2
Ip(t
3)
Figure 30: Current cycle used to measure magnetic and
electrical offset (transducer supplied)
This model is valid for primary ampere-turns QP between
-QPmax and +QPmax only.
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CAS series
Performance parameters definition (continued)
Electrical offset
Response and reaction times
The electrical offset voltage VOE can either be measured when
the ferro-magnetic parts of the transducer are:
The response time tr and the reaction time tra are shown in
figure 31.
Both depend on the primary current di/dt. They are measured
at nominal ampere-turns.
●● completely demagnetized, which is difficult to realize,
●● or in a known magnetization state, like in the current cycle
shown in figure 30.
Using the current cycle shown in figure 30, the electrical offset
is:
V (t ) + V (t )
V =
2
OUT
1
OUT
2
100 %
90 %
I
OE
The temperature variation VOT of the electrical offset voltage
VOE is the variation of the electrical offset from 25°C to the
considered temperature:
V (T ) = V (T ) − V (25°C )
OT
OE
OE
Note: the transducer has to be demagnetized prior to the
application of the current cycle (for example with a
demagnetization tunnel).
VOUT
Ip
tr
10 %
tra
t
Figure 31: Response time tr and reaction time tra
Overall accuracy
The overall accuracy at 25°C XG is the error in the - IPN .. + IPN
range, relative to the rated value IPN.
It includes:
●● the electrical offset VOE
●● the sensitivity error eG
●● the linearity error eL (to IPN)
The magnetic offset is part of the overall accuracy. It is
taken into account in the linearity error figure provided the
transducer has not been magnetized by a current higher than
IPN.
Figure 32: Test connection
Page 13/16
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CAS series
Application information
Filtering and decoupling
Supply voltage VC
Output VOUT
The fluxgate oscillator draws current pulses of up to 30 mA
at a rate of ca. 900 kHz. Significant 900 kHz voltage ripple
on VC can indicate a power supply with high impedance. At
these frequencies the power supply rejection ratio is low, and
the ripple may appear on the transducer output VOUT and
reference VREF. The transducer has internal decoupling
capacitors, but in the case of a power supply with high
impedance, it is advised to provide local decoupling (100 nF
or more, located close to the transducer).
The output VOUT has a very low output impedance of
typically 2 Ohms; it can drive 100 pF directly. Adding series
Rf = 100 Ohms allows much larger capacitive loads. Empirical
evaluation may be necessary to obtain optimum results.
The minimum load resistance on VOUT is 1 kOhm.
Total Primary Resistance
The
primary
resistance
is
mΩ
0.72
per
conductor.
In the following table, examples of primary resistance
according to the number of primary turns.
Number of
primary turns
Primary
resistance
RP [ mW ]
1
0.24
Recommended
connections
IN
2
9
8
OUT
1
10
2
9
3
8
OUT
1
10
2
9
3
8
OUT
1
2
3
1.08
IN
3
10
2.16
IN
Page 14/16
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CAS series
CAS Series, PCB footprint
Assembly on PCB
●● Recommended PCB hole diameter 1.3 mm for primary pin
0.8 mm for secondary pin
●● Maximum PCB thickness
2.4 mm
●● Wave soldering profile
maximum 260°C for 10 s
No clean process only.
Safety
This transducer must be used in limited-energy secondary circuits
according to IEC 61010-1.
This transducer must be used in electric/electronic equipment
with respect to applicable standards and safety requirements in
accordance with the manufacturer’s operating instructions.
Caution, risk of electrical shock
When operating the transducer, certain parts of the module can carry
hazardous voltage (eg. primary busbar, power supply).
Ignoring this warning can lead to injury and/or cause serious damage.
This transducer is a build-in device, whose conducting parts must be
inaccessible after installation.
A protective housing or additional shield could be used.
Main supply must be able to be disconnected.
Page 15/16
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CAS series
Dimensions CAS Series (in mm. General linear tolerance ± 0.25 mm)
Connection
Page 16/16
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com