Current Transducer LPSR series
I
P N
= 6, 15, 25, 50 A
Ref: LPSR 6-NP, LPSR 15-NP, LPSR 25-NP, LPSR 50-NP
For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation between
the primary and the secondary circuit.
Features
● Closed loop multi-range current transducer
● Voltage output
● Unipolar supply voltage
● Compact design for PCB mounting
● Overcurrent detect at 4.1 ×
I
P N
.
Applications
● AC variable speed and servo motor drives
●
Static converters for DC motor drives
● Battery supplied applications
● Uninterruptible Power Supplies (UPS)
● Switched Mode Power Supplies (SMPS)
● Power supplies for welding applications
● Solar inverters.
Advantages
● Very low offset drift
●
Very good dv/dt immunity
● Reference pin with two modes: Ref IN and Ref OUT
● Extended measuring range for unipolar measurement.
Standards
● IEC 61800-1: 1997
● IEC 61800-2: 2015
● IEC 61800-3: 2004
● IEC 61800-5-1: 2007
● IEC 62109-1: 2010
● IEC 62477-1: 2012
● UL 508:2013.
Application Domain
● Industrial.
N°97.P3.09.000.0, N°97.P3.15.000.0, N°97.P3.19.000.0, N°97.P3.25.000.0
26July2017/Version 2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
Page 1/20
www.lem.com
LPSR series
Absolute maximum ratings
Parameter
Maximum supply voltage
Maximum primary conductor temperature
Maximum primary current
Maximum electrostatic discharge voltage
Symbol
U
C max
T
B max
I
P max
U
ESD max
Unit
V
°C
A
kV
Value
7
110
20 ×
I
P
4
N
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: 11
Standards
● CSA C22.2 NO. 14-10 INDUSTRIAL CONTROL EQUIPMENT - Date 2011/08/01
● UL 508 STANDARD FOR INDUSTRIAL CONTROL EQUIPMENT - Date 2013
Ratings
Parameter
Primary involved potential
Max surrounding air temperature
Primary current
Secondary supply voltage
Output voltage
Symbol
T
A
I
P
U
C
V
out
Unit
V AC/DC
°C
A
V DC
V
Value
1000
105
According to series primary
currents
7
0 to 5
Conditions of acceptability
When installed in the end-use equipment, consideration shall be given to the following:
1 - These devices must be mounted in a suitable end-use enclosure.
2 - The terminals have not been evaluated for field wiring.
3 - The LES, LESR, LKSR, LPSR, LXS and LXSR Series shall be used in a pollution degree 2 environment or better.
4 - Low voltage circuits are intended to be powered by a circuit derived from an isolating source (such as a transformer, optical
isolator, limiting impedance or electro-mechanical relay) and having no direct connection back to the primary circuit (other than
through the grounding means).
5 - These devices are intended to be mounted on the printed wiring board of the end-use equipment (with a minimum CTI of 100).
6 - LES, LESR, LKSR and LPSR Series: based on results of temperature tests, in the end-use application, a maximum of 110°C
cannot be exceeded on the primary jumper.
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.
Page 2/20
26July2017/Version 2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
LPSR series
Insulation coordination
Parameter
RMS voltage for AC insulation test, 50 Hz, 1 min
Impulse withstand voltage 1.2/50 μs
Insulation resistance
Partial discharge RMS test voltage (
q
m
< 10 pC)
Clearance (pri. - sec.)
Creepage distance (pri. - sec.)
Case material
Comparative tracking index
Application example
Symbol
U
d
Û
W
R
INS
U
t
d
CI
d
Cp
-
Unit
kV
kV
GΩ
kV
mm
-
Value
4.3
8
18
1.65
Comment
measured at 500 V DC
See dimensions drawing on
page 19
V0 according to
UL 94
600
CTI
V
600 V
CAT III, PD2
1000 V
CAT III, PD2
Reinforced insulation, non
uniform field according to
IEC 61800-5-1
Basic insulation, non uniform
field according to IEC 61800-
5-1
Application example
V
Environmental and mechanical characteristics
Parameter
Ambient operating temperature
Ambient storage temperature
Mass
Symbol
T
A
T
S
m
Unit
°C
°C
g
Min
−40
−55
Typ
Max
105
125
Comment
10
Page 3/20
26July2017/Version 2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
Electrical data LPSR 6-NP
LPSR series
At
T
A
= 25 °C,
U
C
= +5 V,
N
P
= 1 turn,
R
L
= 10 kΩ internal reference, unless otherwise noted (see Definition of typical, minimum and
maximum values paragraph in page 18).
Parameter
Primary nominal RMS current
Primary current, measuring range
Number of primary turns
Supply voltage
Current consumption
Reference voltage @
I
P
= 0 A
External reference voltage
Output voltage
Output voltage @
I
P
= 0 A
Electrical offset voltage
Electrical offset current
referred to primary
Temperature coefficient of
V
ref
@
I
P
= 0 A
Temperature coefficient of
V
out
@
I
P
= 0 A
Theoretical sensitivity
Sensitivity error
Temperature coefficient of
G
Linearity error
Magnetic offset current (10 ×
I
P N
)
referred to primary
Output RMS voltage noise spectral
density 100 … 100 kHz referred to
primary
Output voltage noise
DC … 10 kHz
DC … 100 kHz
DC … 1 MHz
Primary current, detection threshold
Symbol
I
P N
I
P M
N
P
U
C
I
C
V
ref
V
ref
V
out
V
out
V
O E
I
O E
TCV
ref
TCV
out
G
th
ε
G
TCG
ε
L
I
O M
e
no
Unit
A
A
V
mA
V
V
V
V
mV
mA
ppm/K
ppm/K
mV/A
%
ppm/K
% of
I
P N
mA
µV/Hz½
Min
Typ
6
Max
Comment
Apply derating according to
fig. 21
−20
1, 2, 3, 4
4.75
17 +
20
5
I
(
mA
)
N
P
S
5.25
20 +
I
(
mA
)
N
P
S
N
S
= 2000 turns
Internal reference
with
U
C
= +5 V
100 % tested
V
out
−
V
ref
100 % tested
Internal reference
ppm/K of 2.5 V
−40 °C … 105 °C
625 mV
I
P N
100 % tested
−40 °C … 105 °C
2.485
0.5
0.25
2.5
2.515
2.75
4.75
V
ref
−5
−48
5
48
±70
±14
104.2
−0.2
−0.1
−25
7
0.2
±40
0.1
25
V
no
I
P Th
t
r Th
t
hold Th
t
ra
t
r
BW
X
G
X
G
X
X
mVpp
A
4.02 ×
I
P N
10.5
13.4
13.6
4.1 ×
I
P N
4.17 ×
I
P N
Overcurrent detection
measured over temperature
−40 °C … 105 °C with a
I
P
step of 5 ×
I
P N
and d
i
/d
t
=
50 A/µs
Overcurrent detection response time
µs
1.4
2.2
Overcurrent detection hold time
Reaction time @ 10 % of
I
P N
Step response time to 90 % of
I
P N
Frequency bandwidth (±1 dB)
Overall accuracy
Overall accuracy @
T
A
= 85 °C (105 °C)
Accuracy
Accuracy @
T
A
= 85 °C (105 °C)
26July2017/Version 2
ms
µs
µs
kHz
% of
I
P N
% of
I
P N
% of
I
P N
% of
I
P N
300
1
0.3
0.4
1.25
1.25 (1.5)
0.5
0.75 (1)
Page 4/20
R
L
= 1 kΩ, d
i
/d
t
= 50 A/µs
R
L
= 1 kΩ, d
i
/d
t
= 50 A/µs
R
L
= 1 kΩ
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
Electrical data LPSR 15-NP
LPSR series
At
T
A
= 25 °C,
U
C
= +5 V,
N
P
= 1 turn,
R
L
= 10 kΩ internal reference, unless otherwise noted (see Definition of typical, minimum and
maximum values paragraph in page 18).
Parameter
Primary nominal RMS current
Primary current, measuring range
Number of primary turns
Supply voltage
Current consumption
Reference voltage @
I
P
= 0 A
External reference voltage
Output voltage
Output voltage @
I
P
= 0 A
Electrical offset voltage
Electrical offset current
referred to primary
Temperature coefficient of
V
ref
@
I
P
= 0 A
Temperature coefficient of
V
out
@
I
P
= 0 A
Theoretical sensitivity
Sensitivity error
Temperature coefficient of
G
Linearity error
Magnetic offset current (10 ×
I
P N
)
referred to primary
Output RMS voltage noise spectral
density 100 … 100 kHz referred to
primary
Output voltage noise
DC … 10 kHz
DC … 100 kHz
DC … 1 MHz
Primary current, detection threshold
Symbol
I
P N
I
P M
N
P
U
C
I
C
V
ref
V
ref
V
out
V
out
V
O E
I
O E
TCV
ref
TCV
out
G
th
ε
G
TCG
ε
L
I
O M
e
no
Unit
A
A
V
mA
V
V
V
V
mV
mA
ppm/K
ppm/K
mV/A
%
ppm/K
% of
I
P N
Min
Typ
15
Max
Comment
Apply derating according to
fig. 22
−51
1, 2, 3, 4
4.75
17 +
51
5
I
(
mA
)
N
P
S
5.25
20 +
I
(
mA
)
N
P
S
N
S
= 2000 turns
Internal reference
with
U
C
= +5 V
100 % tested
V
out
−
V
ref
100 % tested
Internal reference
ppm/K of 2.5 V
−40 °C … 105 °C
625 mV
I
P N
100 % tested
−40 °C … 105 °C
2.485
0.5
0.25
2.5
2.515
2.75
4.75
V
ref
−1.75
−42
1.75
42
±70
±6
41.67
−0.2
−0.1
−45
0.2
±40
0.1
45
3.5
µV/Hz½
V
no
I
P Th
mVpp
A
4.02 ×
I
P N
4.5
5.7
6.3
4.1 ×
I
P N
4.17 ×
I
P N
Overcurrent detection
measured over temperature
−40 °C … 105 °C with a
I
P
step of 5 ×
I
P N
and d
i
/d
t
=
50 A/µs
Overcurrent detection response time
t
r Th
µs
1.4
2.2
Overcurrent detection hold time
Reaction time @ 10 % of
I
P N
Step response time to 90 % of
I
P N
Frequency bandwidth (±3 dB)
Overall accuracy
Overall accuracy @
T
A
= 85 °C (105 °C)
Accuracy
Accuracy @
T
A
= 85 °C (105 °C)
t
hold Th
t
ra
t
r
BW
X
G
X
G
X
X
ms
µs
µs
kHz
% of
I
P N
% of
I
P N
% of
I
P N
% of
I
P N
300
1
0.3
0.4
0.75
0.75 (1)
0.5
0.65 (0.75)
Page 5/20
R
L
= 1 kΩ, d
i
/d
t
= 50 A/µs
R
L
= 1 kΩ, d
i
/d
t
= 50 A/µs
R
L
= 1 kΩ
26July2017/Version 2
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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