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Current Transducer LTS 15-NP
For the electronic measurement of currents : DC, AC, pulsed, mixed, with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit).
IPN = 15 At
16058
Electrical data
IPN IPM IPDC VOUT NS RL R IM TCR IM VC IC Primary nominal current rms Primary current, measuring range Overload capability (direct current) Analog output voltage @ IP IP = 0 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 15 At 0 .. 48 At 250 At 2.5 (0.625*IP/IPN) V 2.5 1) V 2000 2 k 83.33 < 50 ppm/K 5 V 28+ IS2) +(V /RL) mA OUT
Features
* Closed loop (compensated) multi* * * * *
range current transducer using the Hall effect Unipolar voltage supply Compact design for PCB mounting Isolated plastic case recognized according to UL 94-V0 Incorporated measuring resistance Extended measuring range.
Typ
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.
Accuracy - Dynamic performance data
X
L
Accuracy @ IPN , TA = 25C Accuracy with R IM @ IPN , TA = 25C Linearity error
0.2 0.7 < 0.1 Typ 65
% % % Maxi 120 ppm/K 170 ppm/K 50 3)ppm/K 0.5 2.0 2.0 mV mV mV ns ns A/ s kHz kHz
TCVOUT Temperature coefficient of VOUT @ IP = 0 - 10C .. + 85C - 40C .. - 10C TCG Temperature coefficient of G - 40C .. + 85C VOM Magnetic offset voltage @ IP = 0, after an overload of 3 x IPN 5 x IPN 10 x IPN t ra tr di/dt BW Reaction time @ 10 % of IPN Response time to 90 % of IPN step di/dt accurately followed Frequency bandwidth (0 .. - 0.5 dB) (- 0.5 .. 1 dB)
Applications
* AC variable speed drives and servo
motor drives
< 100 < 400 > 35 DC .. 100 DC .. 200
* Static converters for DC motor drives * Battery supplied applications * Uninterruptible Power Supplies
(UPS)
* Switched Mode Power Supplies
(SMPS)
General data
TA TS m Ambient operating temperature Ambient storage temperature Mass Standards - 40 .. + 85 C - 40 .. + 100 C 10 g EN 50178: 1997 IEC 60950-1: 2001
* Power supplies for welding
applications.
Application domain
* Industrial.
Notes:
1) 2) 3)
Absolute value @ TA = 25C, 2.475 < VOUT < 2.525 IS= IP/N S Only due to TCR IM.
Copyright protected.
Page 1/3
061102/17
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
Current Transducer LTS 15-NP Isolation characteristics
Vd Vw Ve dCp dCl CTI Rms voltage for AC isolation test, 50/60 Hz, 1 min Impulse withstand voltage 1.2/50 s Rms voltage for partial discharge extinction @ 10pC Creepage distance 4) Clearance distance 5) Comparative Tracking Index (Group III a) 3 >8 Mini >1.5 Mini 15.5 6.35 175 kV kV kV mm mm
Application 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 dCp, dCI, V W Single isolation Reinforced isolation Rated isolation voltage 600 V 300 V IEC 61010-1 Nominal voltage 600 V 300 V
Notes:
4) 5)
On housing On PCB with soldering pattern UTEC93-703.
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 built-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
061102/17
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
Dimensions LTS 15-NP
(in mm. 1 mm = 0.0394 inch)
Operation principle
Bottom view
Front view
Back view
Right view
Number of primary turns
Primary nominal current rms IPN [ A ] 15
Nominal output voltage VOUT [ V ] 2.5 0.625
Primary resistance R P [ m ] 0.18
Primary insertion inductance L P [ H ] 0.013
IN
Recommended connections
6 5 4 OUT
1
1 6
2 5
3 4
OUT
2
7.5
2.5 0.625
0.81
0.05
IN 1 6 2 5 3 4 OUT
3
5
2.5 0.625
1.62
0.12
IN 1 2 3
Mechanical characteristics
* General tolerance * Fastening & connection of primary
Recommended PCB hole * Fastening & connection of secondary Recommended PCB hole * Additional primary through-hole 0.2 mm 6 pins 0.8 x 0.8 mm 1.3 mm 3 pins 0.5 x 0.35 mm 0.8 mm 3.2 mm
Output Voltage - Primary Current
VOUT [ V ]
5 4.5 3.125 2.5 1.875 0.5
Remarks
* VOUT is positive when IP flows from terminals 1, 2, 3 to
terminals 6, 5, 4. * Temperature of the primary jumper should not exceed 100C.
061102/17
- IP
- IPN 0
IPN
IP
IP [ At ]
Page 3/3
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.

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