Current Transducer
CTSR 0.3-TP/SP4
I
PRN
=
300 mA
For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation between
the primary circuit and the secondary circuit.
Features
● Closed loop (compensated) current transducer
● Voltage output
● Single supply voltage
● PCB mounting
● Four integrated primary conductors.
Applications
● Residual current measurement
● Leakage current measurement in transformerless PV
inverters
● First human contact protection of PV arrays
● Failure detection in power sources
● Symmetrical fault detection (e.g. after motor inverter)
● Leakage current detection in stacked DC sources
● Single phase or three phase nominal current measurement
up to ± 30 A per wire (DC or AC).
Special feature
● No retention pin.
Advantages
●
High accuracy
● Very low offset drift over temperature
● High overload capability
● High insulation capability
● Reference pin with two modes, Ref In and Ref Out
● Degauss and test functions
● Possibility to add up to four primary wires (diam. 4.2 mm
Standards
● EN 50178: 1997
● IEC 61010-1: 2010
● UL 508: 2010.
Application Domain
● Industrial
max) in addition to the already integrated primary conductors. ● Suitable to fulfil VDE 0126-1-1 and UL 1741.
N°97.H3.A2.004.0
28January2014/version 7
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CTSR 0.3-TP/SP4
Absolute maximum ratings
Parameter
Supply voltage
Primary conductor temperature
Overload capability (100 µs, 500 A/µs)
Symbol
U
C
T
B
Î
P
Unit
V
°C
A
Value
7
110
3300
Stresses above these ratings may cause permanent damage. Exposure to absolute maximum ratings for extended periods may
degrade reliability.
UL 508: Ratings and assumptions of certification
File # E189713 Volume: 2 Section: 3
Standards
● CSA C22.2 NO. 14-10 INDUSTRIAL CONTROL EQUIPMENT - Edition 11 - Revision Date 2011/08/01
● UL 508 STANDARD FOR INDUSTRIAL CONTROL EQUIPMENT - Edition 17 - Revision Date 2010/04/15
Ratings
Parameter
Primary involved potential*
Max surrounding air temperature
Primary current
Secondary supply voltage
Output voltage
* Enviromental: For use in Pollution degree 3.
Conditions of acceptability
When installed in the end-use equipment, consideration shall be given to the following:
1 - A suitable enclosure shall be provided in the end-use application.
2 - The insulation between the primary and the secondary sensing circuits were evaluated with 4250 V AC for CTSR 0.6-TP/
SP and 2200 V AC for CTSR 0.6-P in dielectric voltage withstand test.
5 - CTSR series is intended to be mounted on the printed wiring board of the end-use equipment.
7 - The uninsulated live parts of primary feeder and secondary circuit clearance spacing of Model CTSR XX-P series shall
maintain at least 5.5 mm apart.
8 - Primary feeder of the devices shall be connected after an overvoltage device or system which has been evaluated by the
Standard for Transient Voltage Surge Suppressors, UL 1449.
Marking
Only those products bearing the UL or UR Mark should be considered to be Listed or Recognized and covered under UL's
Follow-Up Service. Always look for the Mark on the product.
T
A
I
P
U
C
V
out
Symbol
Unit
V AC/DC
°C
A
V DC
V
Value Version P
600
105
According to series primary currents
7
0 to 7
Value Version TP
1000
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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
CTSR 0.3-TP/SP4
Insulation coordination
Parameter
Rms voltage for AC insulation test, 50 Hz, 1 min
Impulse withstand voltage 1.2/50 µs
Partial discharge extinction rms voltage @ 10 pC
Clearance (pri. - pri.)
Creepage distance (pri. - pri.)
Clearance (pri. - sec.)
Creepage distance (pri. - sec.)
Symbol
U
d
Û
W
U
e
d
CI
d
Cp
d
CI
d
Cp
Unit
kV
kV
kV
mm
mm
mm
mm
Value
6
11.2
2.475
6.7
6.7
13.5
33.2
Comment
Shortest distance through
air
Shortest path along device
body
Shortest distance through
air
Shortest path along device
body
Shortest distance through
air
Shortest path along device
body
Shortest distance through
air
Shortest path along device
body
Reinforced insulation, CAT
III, PD2 non uniform field
according to EN 50178
Reinforced insulation, CAT
III, PD3 non uniform field
according to EN 50178,
IEC 61010
When mounted on a PCB
(with recommended hole and pad diameters, see paragraph “PCB footprint”).
Clearance (pri. - pri.)
Creepage distance (pri. - pri.)
Clearance (pri. - sec.)
Creepage distance (pri. - sec.)
Comparative tracking index
Application example
d
CI
d
Cp
d
CI
d
Cp
CTI
-
mm
mm
mm
mm
V
V
5.6
5.6
12.5
12.5
600
1000
Application example
-
V
1500
Environmental and mechanical characteristics
Parameter
Ambient operating temperature
Ambient storage temperature
Mass
Symbol
T
A
T
S
m
Unit
°C
°C
g
Min
-40
-50
Typ
Max
105
105
Comment
55
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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
CTSR 0.3-TP/SP4
Electrical data
At
T
A
= 25 °C,
U
C
= + 5 V, output voltage referred to
V
ref
, unless otherwise noted (see Min., Max., typical definition paragraph) in
page 9.
Parameter
Primary nominal residual rms current
Primary residual current, measuring range
Supply voltage
Current consumption
Output voltage referred to GND
(during Degauss cycle)
Output voltage referred to
V
ref
(Test current)
Reference voltage @
I
P
= 0
External reference voltage
Electrical offset current
referred to primary (Note
2)
)
Temperature coefficient of
V
ref
Temperature coefficient of
V
OE
@
I
P
= 0
Theoretical sensitivity
Sensitivity error (Note
2)
)
Temperature coefficient of
G
Linearity error
Magnetic offset current (1000 x
I
PRN
)
referred to primary
Output rms noise voltage (1 Hz .. 10 kHz)
Reaction time @ 10 % of
I
PRN
Step response time to 90 % of
I
PN
Frequency bandwidth (- 1 dB)
Accuracy (Note
3)
)
Notes:
1)
2)
Symbol
I
PRN
I
PRM
U
C
I
C
Unit
mA
mA
V
mA
Min
-500
4.75
Typ
300
Max
500
Comment
5
17.5
5.25
21.6
+
I
P
(mA)/N
S
With
N
S
= 1000 turns
- 40 .. 105 °C
Note
1)
Note
1)
Internal reference
Internal reference of
V
ref
input = 499 Ω
Note
1)
V
out
V
out
V
ref
V
ref
I
OE
TCV
ref
TCV
OE
G
th
ε
G
TCG
ε
L
I
OM
V
no
t
ra
t
r
BW
X
V
V
V
V
mA
ppm/K
ppm/K
V/A
%
ppm/K
% of
I
PRM
mA
mV
µs
µs
kHz
%
-1.6
0.7
2.495
2.3
-24
0.3
1.2
2.5
0.5
1.7
2.505
4
7
24
±50
±570
- 40 .. 105 °C
ppm/K of 2.5 V
- 40 .. 105 °C
R
L
> 500 kΩ
- 40 .. 85 °C
- 40 .. 105 °C
4
0.5
1.6
±230
±400
0.5
17
6
7
50
3.5
1.9
R
L
> 500 kΩ
R
L
> 500 kΩ,
di/dt
> 5 A/µs
R
L
> 500 kΩ,
di/dt
> 5 A/µs
R
L
> 500 kΩ
= (ε
G
2
+
ε
L 2
)
1/2
1
See “Application information” section.
Only with a primary nominal residual current, see paragraph “Primary nominal residual current and primary nominal
current”.
3)
Accuracy @
T
A
and
I
P
:
X
TA
= (X
2
+ (TCG•100•(T
A
- 25))
2
+ (TCV
OE
•2.5•(T
A
- 25 )/G
th
•100/
I
P
)
2
)
1/2
.
Page 4/10
28January2014/version 7
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
CTSR 0.3-TP/SP4
Typical performance characteristics
Relative sensitivity (dB)
Frequency (Hz)
Figure 1: Frequency response
e
no
(dBVrms/rtHz)
Figure 2: Output noise voltage spectral density
Figure 4: Typical step response
V
no
(V)
Figure 3: Output noise, cumulated rms
Figure 5: Typical step response
Phase (°)
Page 5/10
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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
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