CDSR 0.07-NPDT

**Current Transducer CDSR 0.07-NPDT** 

_I_ **= 70 mA** P R N 

## 

For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation between the primary and the secondary circuit. 

## **Applications** 

## **Features** 

   - ●Leakage current measurement in an IC-CPD in-cable (mode 2) and for wall boxes (mode 3) contact and protection device 

- ●Open loop current transducer 

- ●Trigger output 

## 

- ●Single supply voltage 3.3 V 

   - ●Single phase nominal current up to ±32 A RMS. 

- ●PCB mounting. 

## **Complies with applications using these standards** 

## **Special feature** 

- ●Embedded primary jumpers. 

- ●IEC 61851-1 

## **Advantages** 

   - ●IEC 62752 

- ●Very low error at small currents 

   - ●IEC 62955. 

- ●High overload capability 

## **Application Domain** 

- ●High insulation capability 

   - ●Residential. 

- ●Test winding. 

N° 97.XX.XX.000.0 

Page 1/10 LEM International SA Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

## **Safety** 

⚠ Caution If the device is used in a way that is not specified by the manufacturer, the protection provided by the device may be compromised. Always inspect the electronics unit and connecting cable before using this product and do not use it if damaged. Mounting assembly shall guarantee the maximum primary busbar temperature, fulfill clearance and creepage distance,  minimize electric and magnetic coupling, and unless otherwise specified can be mounted in any orientation The plastic housing is conform to IK06 level (1 Joule). The device was certified for indoor use only and at an altitude below 2000 m. Caution, risk of electrical shock This transducer must be used in limited-energy secondary circuits SELV according to IEC 61010-1, in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the manufacturer’s operating specifications. When operating the transducer, certain parts of the module can carry hazardous voltage (e.g. primary busbar, power supply). De-energize all circuits and hazardous live parts before installing the product. All installations, maintenance, servicing operations and use must be carried out by trained and qualified personnel practicing applicable safety precautions. If the transducer is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a build-in device, whose hazardous live parts must be inaccessible after installation. This transducer must be mounted in a suitable end-enclosure and its measuring jumpers must be at some point in the final installation protected behind a properly dimensioned circuit breaker that can be easily accessed by the end user of the application. Use caution during installation and use of this product; high voltages and currents may be present in circuit under test. Main supply must be able to be disconnected. Never connect the output to any equipment with a common mode voltage to earth greater than 30 volts. Always wear protective clothing and gloves if hazardous live parts are present in the installation where the measurement is carried out. This transducer is a built-in device, not intended to be cleaned with any product. Nevertheless if the user must implement cleaning or washing process, validation of the cleaning program has to be done by himself. y Ate ESD susceptibility The product is susceptible to be damaged from an ESD event and the personnel should be grounded when handling it. Do not dispose of this product as unsorted municipal waste. Contact a qualified recycler for disposal. Although LEM applies utmost care to facilitate compliance of end products with applicable regulations during LEM product design, use of this part may need additional measures on the application side for compliance with regulations regarding EMC and protection against electric shock. Therefore LEM cannot be held liable for any potential hazards, damages, injuries or loss of life resulting from the use of this product. 

This transducer is a built-in device, not intended to be cleaned with any product. Nevertheless if the user must implement cleaning or washing process, validation of the cleaning program has to be done by himself. 

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Underwriters Laboratory Inc. recognized component "This Arrow indicates the positive residual current measurement" 

G20044ASDA/Version 2 

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

Page 2/10 LEM International SA Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com 

**CDSR 0.07-NPDT** 

## **Absolute maximum ratings** 

|**Absolute maximum ratings**||
|---|---|
|**Parameter**<br>**Symbol**<br>Maximum supply voltage<br>±_U_C max<br>Maximum primary conductor temperature<br>_T_Bmax<br>Maximum withstand primary peak current<br>_Î_P max|**N**<br>**Unit**<br>**Value**<br>V<br>3.6<br>°C<br>100<br>A<br>3300|
|Electrostatic discharge voltage (HBM - Human Body Model)<br>_U_ESD HBM|kV<br>TBD|
|**E**<br>Absolute maximum ratings apply at 25 °C unless otherwise noted.<br>Stresses above these ratings may cause permanent damage.<br>Exposure to absolute maximum ratings for extended periods may degrade reliability.<br>**UL 508: Ratings and assumptions of certification**||



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

Ongoing submission 

## **Standards** 

|**Standards**||
|---|---|
|**M**<br>**Standards**<br>●CSA C22.2 NO. 14-10 INDUSTRIAL CONTROL EQUIPMENT - Date 2011/08/01<br>●UL 508 STANDARD FOR INDUSTRIAL CONTROL EQUIPMENT - Date 2013<br>●UL 61010<br>**Ratings**||
|**Parameter**<br>**Symbol**<br>**Unit**|**Value**|
|**I**<br>Primary involved potential<br>V RMS<br>Maximum surrounding air temperature<br>_T_A<br>°C<br>Primary current<br>_I_P<br>A|300<br>85<br>32|
|Secondary supply voltage<br>_U_C<br>V DC|3.3|
|**C**<br>Output voltage<br>_U_out<br>V<br>**Conditions of acceptability**<br>When installed in the end-use equipment, consideration shall be given to the following:<br>_1 - These devices must be mounted in a suitable end-use enclosure._|0 to 3.3|



- _2 -  The terminals have not been evaluated for field wiring._ 

- _3 - The CDSR xx-NPDT 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).The maximum current supplied to the device must be protected/limited to a maximum of 5 Amperes._ 

- _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 -  CDSR xx-NPDT Series: based on results of temperature tests, in the end-use application, a maximum of 110°C cannot be exceeded on the primary jumper._ 

- _7 -  During the "Startup time" period no residual current must be flowing through the transducer as a critical measurement zeroing is being performed._ 

## 

## **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. 

## **Performances** 

All described performances are valid for the whole temperature range at _U_ C = 3.3 V, unless otherwise noted. 

## 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

## **Insulation coordination** 

|**Insulation coordination**|**CDSR 0.07-NPDT**|
|---|---|
|**Parameter**<br>RMS voltage for AC insulation test, 50 Hz, 1 min<br>Impulse withstand voltage 1.2/50 μs<br>Partial discharge RMS test voltage (_q_m< 10 pC)|**N**<br>**Symbol**<br>**Unit**<br>_≤_**Value**<br>**Comment**<br>_U_d<br>kV<br>3.3<br>According to IEC 60664<br>_U_Ni<br>kV<br>6<br>According to IEC 60664<br>_U_t<br>V<br>825<br>According to IEC 60664|
|Clearance (pri. - sec.)|_d_CI<br>mm<br>10.15<br>Shortest distance through air|
|Creepage distance (pri. - sec.)<br>Clearance (pri. - pri.)<br>Creepage distance (pri. - pri.)<br>Case material|**E**<br>_d_Cp<br>mm<br>10.15<br>Shortest path along device body<br>_d_CI<br>mm<br>5.64<br>Shortest distance through air<br>_d_Cp<br>mm<br>5.64<br>Shortest path along device body<br>-<br>-<br>V0<br>According to UL 94|
|Comparative tracking index|_CTI_<br>600|
|**M**<br>Application example<br>RMS voltage line-to-neutral<br>V<br>300<br>Reinforced insulation according to<br>IEC 60664-1 or IEC 61010-1<br>CAT III, PD2<br>**Environmental and mechanical characteristics**<br>**Parameter**<br>**Symbol**<br>**Unit**<br>**Min**<br>**Typ**<br>**Max**<br>**Comment**||



|**Parameter**|**M**<br>**Symbol**|**M**|**M**<br>**Unit**|**M**<br>**Min**|**Typ**|**Max**|**Comment**|
|---|---|---|---|---|---|---|---|
|Ambient operating temperature|_T_A||°C|−40||85||
|Ambient storage temperature<br>Relative humidity|**I**<br>_T_A st<br>_RH_||°C<br>%|−50|85|85||
|Mass|_m_||g||19|||
|**C**||||||||
|**E**||||||||
|**P**||||||||
|**S**||||||||



Page 4/10 LEM International SA Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

## **General electrical data** 

|**General electrical data**|||||
|---|---|---|---|---|
|**Parameter**<br>Primary nominal residual RMS current<br>Primary residual current, measuring range<br>Supply voltage⎓|**Symbol**<br>_I_P R N<br>_I_P R M<br>_U_C|**Unit**<br>mA<br>mA<br>V|**Min**<br>−150<br>3.26|**N**<br>**Typ**<br>**Max**<br>**Comment**<br>70<br>150<br>3.3<br>3.33<br>Note1)|
|Current consumption⎓|_I_C|mA||50|
|Rated residual operating current 1<br>Rated residual operating current 2<br>Trip tolerance 1<br>Trip tolerance 2|_xxx_<br>_xxx_<br>_xxx_<br>_xxx_|mA DC<br>mA RMS<br>mA DC<br>mA RMS|4<br>20|**E**<br>6<br>30<br>6<br>30<br>DC to 1 kHz|



## **Digital signals electrical parameters** 

|**Digital signals electrical parameters**<br>**Parameter**<br>Input logic low<br>Input logic high|**Digital signals electrical parameters**<br>**Symbol**<br>_U_in L<br>_U_in H|**M**<br>**Unit**<br>**Min**<br>**Typ**<br>V<br>−0.3<br>V<br>2|**Max**<br>0.8<br>_U_C+<br>0.2|**Comment**|
|---|---|---|---|---|
|Output logic low|_U_out L|V|0.4||
|Output logic high<br>Sink / drive output maximum current|_U_out H<br>_I_out max|**I**<br>V<br>_U_C− 0.4<br>mA<br>−4|4||



## **General switching parameters** 

|**General switching parameters**|||||
|---|---|---|---|---|
|**C**<br>**Parameter**<br>**Symbol**<br>**Unit**<br>Start-up time<br>_t_start<br>ms<br>Minimum reset time<br>_t_res min<br>µs<br>Frequency of fault output<br>_f_out fault<br>kHz|**Min**<br>5<br>11|**Typ**|**Max**<br>400<br>21|**Comment**<br>Also valid after a reset pulse|
|Fault signal threshold<br>_I_Th<br>mA|152||175||
|**E**<br>Fault signal reaction time<br>_t_default<br>µs|||200||
|**P**|||||
|**S**|||||



Page 5/10 LEM International SA Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

**CDSR-NPDT typical mounting and interfacing** 

|**CDSR-NPDT typical mounting and interfacing**||
|---|---|
|**N**||
|**E**||
|**C**<br>**I**<br>**M**<br>**Pin N°**<br>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>~~OA~~<br>DE~~TAI~~L1<br>Li<br>[77~~°~~<br>~~& \~~<br>~~—_———~~<br>~~|AAU ~~K~~y “— FEEL =~~<br>~~4x 2.54~~<br>~~4~~<br>:<br>~~NCSA ae~~<br>~~| |~~<br>mi<br>~~i~~<br>~~—~~<br>~~|~~<br>~~°~~<br>~~| 1 | _————~~<br>~~roy~~<br>| ~~(leer~~<br>~~WY~~0)<br>8x 02.80<br>~~aif~~<br>~~'~~<br>~~' No)~~ ||**Function**<br>Test_in<br>GND<br>NC<br>_U_C<br>Reset<br>NC<br>Default<br>TRIG_AC<br>TRIG_D~~C~~|
|**E**<br>~~*** Pin description:**~~<br>10<br>~~LI 0.64x0.64 (x1~~0)|NC|



Pin No 1 ' ~~Test_in': This~~ pin is connected to a 10-tur ~~n~~ s test ~~c~~ oil. It enables users to check periodically the performances of ~~the transducer~~ by ~~inje~~ ct ~~i~~ ng a known ~~c~~ u ~~r~~ r ~~ent.~~ T ~~h~~ e other te ~~r~~ minal of the coil is connected to ground. Pin No 2 'GND': P ~~o~~ wer s ~~upply ground.~~ Pin No 3: NC Pin No 4 ' _U_ c': Power supply. Pin No 5 'Reset': Active low-level reset signal. After reset rel ~~ea~~ se ~~, a~~ Po ~~w~~ e ~~r-~~ On ~~R~~ eset ~~pro~~ ce ~~durr~~ e ~~is~~ execut ~~e~~ d by thy th th ~~e transducer controller and non-vola~~ tile configur ~~a~~ tion files ar ~~e c~~ harged up agai ~~n~~ . 

Pin No 5 'Reset': Active low-level reset signal. After reset rel ~~ea~~ se ~~, a~~ Po ~~w~~ e ~~r-~~ On ~~R~~ eset ~~pro~~ ce ~~durr~~ e ~~is~~ execut ~~e~~ d by thy th th ~~e transducer controller and non-vola~~ tile configur ~~a~~ tion files ar ~~e c~~ harged up agai ~~n~~ . Pin No 6: NC 

~~P~~ in No 7 'Default': 

Dynami ~~c~~ diagnostic signa ~~l. Wh~~ en ~~n~~ o ~~internal failur~~ e of the transduc ~~e~~ r or when the cu ~~r~~ rent to be 

mea ~~sur~~ ed is in the measuri ~~n~~ g ra ~~n~~ g ~~e t~~ h ~~e signal p~~ rese ~~n~~ t on this pin is a squar ~~e wave with bounded~~ frequency (please refer to the paramet ~~er “freque~~ ncy of ~~f~~ ault output”). This signal becomes ~~s~~ tatic in case of transducer failure or in case of ex ~~c~~ eeded curren ~~t ran~~ ge. Pin No 8 "TRIG_AC:  Active Low-level trigger output Pin No 9 "TRIG_DC:  Active Low-level trigger output Pin No 10: NC 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

## **Default-pin Signal** 

It outputs a PWM square-wave signal with variable duty-cycle. In normal operation, the square-wave signal frequency is within the specified min/max range: this guarantees correct transducer operation. No min and max value is specified for the wave signal duty cycle. When residual current exceeds Default threshold values (“out-of-range residual current” detection) or it is high enough for preventing transducer normal operation (“critical residual current overload” detection), the pin voltage is set to logic ‘1’ value. Whenever the residual current goes under Default threshold values, the Default pin resumes normal operation. The detection time of these errors is very short in order to allow user to react as fast as possible to potential hazardous situation. The actual level of the Default threshold depends on normal ambient conditions. In any case, a residual current higher than Default threshold max value will always be detected. Likewise, a residual current lower than Default threshold min value will never trigger the Default error detection. Residual Current 175 mA prim | | | 152 mA prim 152 mA prim | Default-pin Signal Waveform ULLAL n Normal Operation: / Error edocs PWM square-wave signal ; Default Signal Default Signal Reaction Time Reaction Time Figure 5: Out-of-range residual current **“Test-in” pin:** The “Test-in” pin permits user to test periodically the correct performance of the transformer. It gives access to a 10-turn coil (see pin description) and the user can verify the transducer actual response to primary residual current by injecting a precise current through the pin. A ratio of 10:1 must be applied for calculating the overall residual current actually seen by the transducer: for example, for DC 1mA injected current the transducer will measure a total residual current of 10 mA. It is highly recommended to use a high-impedance current source for driving the ‘Test-in’ pin. At least a minimum output impedance of 470 Ohm must be respected. It is also recommended to connect a bidirectional protection device in order to protect the user PCBA against hazardous transient high pulse current through the primary jumper. Standard Transient Voltage suppressor could accomplish this function (voltage rating to be defined based on specific user application but has to be > 4 V not to perturbate the transducer proper functioning). **“TRIG_xC" pins:** Both "TRIG_AC" and "TRIG_DC" pins are active low-level outputs. Whenever the conditions are met to activate a trigger output, the activation will stay so until the next hardware reset of the device (i.e by a power cycle or by activation of the /RESET input). 

Page 7/10 LEM International SA Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**==> picture [90 x 9] intentionally omitted <==**

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CDSR 0.07-NPDT<br>**----- End of picture text -----**<br>


## **PCB footprint** 

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Recommended drill diame t er<br>View f rom PCB TOP view<br>2x [12 . 9]<br>[@]@ 8x03.3°9"0.1/8} 2x(7] 2x(92] 075)<br>D O<br>10x01 . 4 70 "<br>a /<br>= WD |<br>N .(<br>KOKOX x<br>0 N S,SZ VPFREAOOOY<br>o- oO . a<br>|<br>|<br>A void primary t racks in this area |<br>as it will reduce dCp / dcl |<br>Note: The dimension of customer PCB tracks (width & thickness) and the LEM transducer’s primary jumpers are linked and can<br>influence on each other regarding thermal exchanges and self heating.<br>N<br>E<br>M<br>I<br>**----- End of picture text -----**<br>


**Assembly on PCB** 

- ●Recommended PCB hole diameter 

⌀ 3.3 mm +0.15 mm/−0mm for primary pin 

- ⌀ 1.4 mm +0.15 mm/−0 mm for secondary pin 

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●Recommended primary via ring diameter:<br>●Recommended primary PCB track cross-section<br>●Maximum PCB thickness<br>●Wave soldering profile<br>No clean process only<br>C<br>E<br>P<br>S<br>**----- End of picture text -----**<br>


min 3.9 mm 

- ●Recommended primary via ring diameter: 

- ●Recommended primary PCB track cross-section min 2.24 mm² 

- ●Maximum PCB thickness 

- 2.4 mm 

maximum 260 °C, 10 s 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

**Dimensions** (in mm, general tolerance ±0.5 mm) 

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ie . 4x2 5 4 5 ( kz<br> ARES—O) _DE TAI L1 [|| _ s {a e<br>Chamc a i/\E_Greee vuvu'ly OFI T w a<br>‘OJ. ay, d Cl d Cp<br>10.15 10.15<br>TELL toot G29) e y e e<br>Connection<br>4 wy f f 16<br>( E NG ° 18 O17<br>N<br>E<br>M<br>I<br>C<br>E<br>P<br>S<br>**----- End of picture text -----**<br>


LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

Page 9/10 LEM International SA Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com 

G20044ASDA/Version 2 

**CDSR 0.07-NPDT** 

**Dimensions** (in mm, general tolerance ±0.5 mm) 

## **Creepage and Clearance** 

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**----- Start of picture text -----**<br>
Bet we en primary/primary<br>dCl = 8 . 90mm 2 ae<br>\ / Etsas2)<br>D s —YP B [A oy (ame = B dC p = 13<br>{ ( F AS NON \ t JAK Between<br>[| WS~ [||\ |Won SA . dC l = 13 .<br>SSS NSS — ——"<br>mo rty- Et) i Between<br>LIISA NT Cr a<br>A-A LO G<br>and secondary \D N—I F —<~CAQ)<br>= < |} |<br>- {|| N<br>BedClt we = e6 n. 25mmprimary/primary || | I| ai || ~<br>en — T S =<br>> BedCl twe= e6n .3 primary/primary5mm \@ ee| Y‘< l a uf [ fi &g :gZ O z ) oil t<br>N Z 2 4 A = \\ je<br>Ny ( Pa fA(c Y e Bh A<br>7 , Al LolW417») P TTUi —___|a = S / ——— \\\ ic<br>as<br>CZ WAY A l f CONDI TI ONS<br>— HI vend S XY"G Y } ASA Y Disaccouta n tce all<br>/ ~ 7<br>/ Be t ween primary/primary<br>B - B dCl = 6 . 25mm<br>N<br>E<br>M<br>I<br>C<br>E<br>P<br>S<br>**----- End of picture text -----**<br>


G20044ASDA/Version 2 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice 

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