LTS 15-NP

## **Current Transducer LTS 15-NP** 

|For the electronic measurement of currents: DC, AC, pulsed..., with<br>galvanic separation between the primary circuit and the secondary<br>circuit.<br>~~**Electrical data**~~<br>CEon cSAXusR@HS<br>~~ee~~|
|---|
|_I_P N<br>Primary nominal RMS current<br>15<br>At<br>_I_P M<br>Primary current, measuring range<br>0 … ±48<br>At<br>_I_P<br>Overload capability<br>250<br>At<br>_V_out<br>Output voltage (analog) @_I_P<br>2.5 ±(0.625×_I_P/_I_P N) V<br>@_I_P= 0<br>2.51)<br>V<br>_G_<br>Sensitivity<br>41.6<br>mV/A|
|_N_S<br>Number of secondary turns (±0.1 %)<br>2000<br>_R_L<br>Load resistance<br>_≥_2<br>kΩ<br>_R_I M<br>Internal measuring resistance (±0.5 %)<br>83.33<br>Ω<br>_TCR_I M<br>Temperature coefficient of_R_I M<br>< 50<br>ppm/K<br>_U_C<br>Supply voltage (±5 %)<br>5<br>V<br>_I_C<br>Current consumption @_U_C= 5 V<br>Typical<br>28 + _I_S<br>2)(_V_out/_R_L) mA|



## ~~**Accuracy - Dynamic performance data** To~~ 

|_X_<br>_ε_L<br>_TCV_out<br>_TCG_<br>_V_O M|Accuracy @_I_P N,_T_A= 25 °C<br>Accuracy with_R_I M,@_I_P N,_T_A= 25 °C<br>Linearity error<br>Temperature coefficient of_V_out@_I_P= 0 −10 ... +85 °C <br>−40 ... −10 °C  65<br>Temperature coefficient of_G_<br>−40 ... +85 °C<br>Magnetic offset voltage @_I_P= 0,<br>after an overload of 3 ×_I_P N|±0.2<br>±0.7<br>< 0.1<br>Typ<br>Max<br> 65<br>120<br>−40 ... −10 °C  65<br>170<br>−40 ... +85 °C<br>503)<br>±0.5|%<br>%<br>%<br>ppm/K<br>ppm/K<br>ppm/K<br>mV|
|---|---|---|---|
||after an overload of 5 ×_I_P N|±2.0|mV|
||after an overload of 10 ×_I_P N|P N<br>±2.0|mV|
|_t_ra|Reaction time @ 10 % of_I_P N|< 100|ns|
|_t_r|Step response time to 90 % of_I_P N 4)|< 400|ns|
|_BW_|Frequency bandwidth (0 ... −0.5 dB)|DC … 100|kHz|
|(−0.5 ... 1 dB)<br>DC … 200<br>kHz<br>~~**General data**~~<br>_T_A<br>Ambient operating temperature<br>−40 … +85<br>°C<br>_T_S<br>Ambient storage temperature<br>−40 … +100<br>°C<br>_m_<br>Mass<br>10<br>g<br>Standards<br>EN 50178: 1997<br>IEC 60950-1: 2001<br>~~To~~||||



Notes: 1) Absolute value @ _T_ A = 25 °C, 2.475 < _V_ out < 2.525 

> 2) _I_ S  = _I_ P/ _N_ S 

_I_ **= 15 At** P N eee , a 

## **Features** 

- ●Closed loop (compensated) current transducer using the Hall effect 

- ●Unipolar supply voltage 

- ●Insulating plastic case recognized according to UL 94-V0 

- ●Compact design for PCB mounting 

- ●Incorporated measuring resistance 

- ●Extended measuring resistance. 

## **Advantages** 

- ●Excellent accuracy 

- ●Very good linearity 

- ●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** 

- ●Industrial. 

> 3) Only due to _TCR_ I M 

- 4) For a d _i_ / d _t_ > 35 A/μs. 

N° 97.37.15.000.0 

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## **UL 508: Ratings and assumptions of certification** 

File # E189713 Volume: 2 Section: 1 

## **Standards** 

- ●CSA C22.2 NO. 14-10 INDUSTRIAL CONTROL EQUIPMENT - Edition 11 

- ●UL 508 STANDARD FOR INDUSTRIAL CONTROL EQUIPMENT - Edition 17 

## **Ratings** 

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|**Parameter**|**Symbol**|**Unit**|**Value**|
|---|---|---|---|
|||||
|Primary involved potential||V AC/DC|600|
|Max surrounding air temperature|_T_A|°C|85|
|Primary current|_I_P|A|According to series primary<br>currents|
|Output voltage|_V_out|V|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 LTS, LTSR, LTSP Series are intended to be mounted on the printed wiring board of the end-use equipment (with a minimum CTI of 100)._ 

- _4 -  The LTS, LTSR, LTSP Series shall be used in a pollution degree 2 environment._ 

- _5 -  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)._ 

- _6 -  The LTS, LTSR, LTSP Series: based on results of temperature tests, in the end-use application, a maximum of 100°C cannot be exceeded at soldering point between primary coil pin and soldering point or on primary bus bar (corrected to the appropriate evaluated max, surrounding air)._ 

- _7 -  For LTS, LTSR, LTSP Series, the secondary sensing circuit was evaluated as the circuit intended to be supplied from a Limited Voltage/Current circuit defined in UL 508 standard._ 

## **Marking** 

Only those products bearing the UL or UR Mark should be considered to be Listed or Recognized and covered under UL’s FollowUp Service. Always look for the Mark on the product. 

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## **Current Transducer LTS 15-NP** 

## ~~**Insulation coordination**~~ 

|_U_d|RMS voltage for AC insulation test, 50 Hz, 1 min|3|kV|
|---|---|---|---|
|_Û_W|Impulse withstand voltage 1.2/50 μs|> 8|kV|
|_U_e|Partial discharge extinction RMS voltage @ 10 pC|> 1.5|kV|
|||Min||
|_d_Cp|Creepage distance1)|15.5|mm|
|_d_CI|Clearance2)|6.35|mm|
|_CTI_|Comparative tracking index (group IIIa)|175||
|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**|
|---|---|---|
|_d_Cp,_d_CI,_Û_W|Rated insulation voltage|Nominal voltage|
|Basic insulation|600 V|600 V|
|Reinforced insulation|300 V|300 V|



## **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 (e.g. 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. 

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**Dimensions LTS 15-NP** (in mm) 

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Primary  Nominal  Primary<br>Number  Primary<br>nominal  output  insertion  Recommended<br>of primary  resistance<br>RMS  voltage  inductance   connections<br>turns current V out R P  [m Ω ] L P  [µH]<br>6       5        4   OUT<br>1 ±15 2.5 ±0.625 0.18 0.013<br>IN 1        2         3<br>6       5         4   OUT<br>2 ±7.5 2.5 ±0.625 0.81 0.05<br>IN 1        2        3<br>6       5         4   OUT<br>3 ±5 2.5 ±0.625 1.62 0.12<br>IN 1       2          3<br>**----- End of picture text -----**<br>


## **Mechanical characteristics** 

- ●General tolerance 

±0.2 mm 

- ●Transducer fastening of primary 6 pins 0.8 × 0.8 mm Recommended PCB hole 1.3 mm 

- ●Transducer fastening of secondary 3 pins 0.5 × 0.35 mm Recommended PCB hole 0.8 mm 

- ●Primary through-hole ⌀ 3.2 mm 

## **Remarks** 

- _V_ out swings above 2.5 V when _I_ P flows from terminals 1, 2, 3 to terminals 6, 5, 4 (with the arrow). 

- ●Temperature of the primary conductor should not exceed 100 °C. 

- ●Installation of the transducer must be done unless otherwise specified on the datasheet, according to LEM Transducer Generic Mounting Rules. Please refer to LEM document N°ANE120504 available on our Web site: 

- ●This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. 

## **Output voltage - Primary current** 

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V out  [ V ]<br> 5<br> 4.5<br>3.125<br>2.5<br>1.875<br>0.5<br>I P [ At ]<br>- I P M - I P N   0 I P N I P M<br>**----- End of picture text -----**<br>


**Products/Product Documentation.** 

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