Current Transducer LTS 15-NP
For the electronic measurement of currents: DC, AC, pulsed,
mixed with galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
16058
Features
Electrical data
IPN
IPM
ÎP
VOUT
G
N S
R L
R IM
TCR IM
VC
IC
Primary nominal current rms
Primary current, measuring range
Overload capability
Output voltage (Analog) @ IP
IP = 0
Sensitivity
Number of secondary turns (± 0.1 %)
Load resistance
Internal measuring resistance (± 0.5 %)
Temperature coefficient of R IM
Supply voltage (± 5 %)
Current consumption @ VC = 5 V
Typ
15
At
0 .. ± 48
At
250
At
2.5 ± (0.625·IP/IPN) V
2.5 1)V
41.6
mV/A
2000
≥ 2
kW
83.33
W
< 50 ppm/K
5
V
28+IS2)+(VOUT/RL) mA
Accuracy - Dynamic performance data
X
ε
Accuracy @ IPN, TA = 25°C
Accuracy with RIM @ IPN, TA = 25°C
Linearity error
TCVOUT
TCG
VOM Typ
Temperature coefficient of VOUT @ IP= 0 - 10°C .. + 85°C 65
- 40°C .. - 10°C 65
Temperature coefficient of G - 40°C .. + 85°C
Magnetic offset voltage @ IP = 0,
after an overload of 3 x IPN
5 x IPN
10 x IPN
L
tra
Reaction time @ 10 % of IPN
t r
Response time to 90 % of IPN step
di/dt
di/dt accurately followed
BW
Frequency bandwidth (0 .. - 0.5 dB)
(- 0.5.. 1 dB)
± 0.2
± 0.7
< 0.1
%
%
%
Max
120 ppm/K
170 ppm/K
50 3)ppm/K
± 0.5 mV
± 2.0 mV
± 2.0 mV
< 100
< 400
> 35
DC .. 100
DC .. 200
ns
ns
A/µs
kHz
kHz
General data
TA
TS
m
IPN =± 15 At
●● Closed loop (compensated) multirange current transducer using
the Hall effect
●● Unipolar voltage supply
●● Isolated plastic case recognized
according to UL 94-V0
●● Compact design for PCB
mounting
●● Incorporated measuring
resistance
●● Extended measuring range.
Advantages
●●
●●
●●
●●
●●
●●
●●
Excellent accuracy
Very good linearity
Very low temperature drift
Optimized response time
Wide frequency bandwidth
No insertion losses
High immunity to external
interference
●● Current overload capability.
Applications
●● AC variable speed drives 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.
Application domain
Ambient operating temperature
Ambient storage temperature
Mass
Standards
°C
°C
10
g
EN 50178: 1997
IEC 60950-1: 2001
- 40 .. + 85
- 40 .. + 100
●● Industrial.
Notes:1) Absolute value @ TA = 25°C, 2.475 < VOUT < 2.525
2)
IS = IP/NS
3)
Only due to TCRIM.
110218/19
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
Page 1/3
www.lem.com
Current Transducer LTS 15-NP
Isolation characteristics
Vd
Vw
Ve
Rms voltage for AC isolation test, 50 Hz, 1 min
Impulse withstand voltage 1.2/50 µs
Rms voltage for partial discharge extinction @ 10pC
3
> 8
Min
> 1.5
Min
kV
kV
dCp
dCI
CTI
Creepage distance 1)
Clearance distance 2)
Comparative Tracking Index (group IIIa)
15.5
6.35
175
mm
mm
kV
Notes: 1) On housing
2)
On PCB with soldering pattern UTEC93-703.
Applications examples
According to EN 50178 and IEC 61010-1 standards and following conditions:
●● Over voltage category OV 3
●● Pollution degree PD2
●● Non-uniform field
EN 50178
IEC 61010-1
Rated insulation voltage
Nominal voltage
Single insulation
600 V
600 V
Reinforced insulation
300 V
300 V
dCp, dCI, Vw
Safety
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 2/3
110218/19
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Dimensions LTS 15-NP (in mm)
Operation principle
Number of
primary turns
Primary nominal
current rms
IPN [ A ]
Nominal
output voltage
VOUT [ V ]
Primary
resistance
RP [ mW ]
Primary insertion
inductance
LP [ µH ]
1
± 15
2.5 ± 0.625
0.18
0.013
Recommended
connections
IN
2
± 7.5
2.5 ± 0.625
0.81
±5
2.5 ± 0.625
1.62
●● General tolerance
± 0.2 mm
●● Fastening & connection of primary 6 pins 0.8 x 0.8 mm
Recommended PCB hole
1.3 mm
●● Fastening & connection of secondary3 pins 0.5 x 0.35 mm
Recommended PCB hole
0.8 mm
●● Additional primary through-hole
Ø 3.2 mm
4
OUT
1
6
2
5
3
4
OUT
1
6
2
5
3
4
OUT
1
2
3
0.12
IN
Mechanical characteristics
5
0.05
IN
3
6
Output Voltage - Primary Current
VOUT
[V]
5
4.5
3.125
2.5
Remarks
1.875
●● VOUT swings above 2.5 V when IP flows from terminals 1,
2, 3 to terminals 6, 5, 4 (with the arrow).
●● Temperature of the primary jumper should not exceed
100°C.
0.5
- IPM
- IPN
0
IPN
IP
[ At ]
IPM
Page 3/3
110218/19
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com