LF 1005-S

## **Current Transducer LF 1005-S** 

## **I = 1000 A PN** 

For the electronic measurement of currents: DC, AC, pulsed..., with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). 

16110 

## ~~P~~ **Electrical data** O 

**I** PN Primary nominal current rms 1000 A **I** PM Primary current, measuring range @ ± 24 V 0 .. ± 1500 A **R** M Measuring resistance @ **T** A = 70°C **T** A = 85°C **R R** M min **R** M max M min **R** M max with ± 15 V @ ± 1000 A max 0 18 0 15 Ω @ ± 1200 A max 0 7 0 4 Ω with ± 24 V @ ± 1000 A max 5 60.5 10 57.5 Ω @ ± 1500 A max 5 24 10 21 Ω **I** SN Secondary nominal current rms 200 mA **K** N Conversion ratio 1 : 5000 **V** C Supply  voltage (± 5 %) ± 15 .. 24 V **I** C Current consumption (± 1 mA) 28 (@ ± 24 V) + **I** S mA 

## PY **Accuracy - Dynamic performance data** 

**X** Accuracy @ **I** PN , **T** A = 25°C ± 0.4 % **ε** L Linearity error < 0.1 % Typ Max **I** O Offset current @ **I** P = 0, **T** A = 25°C ± 0.4 mA **I** OM Magnetic offset current @ **I** P = 0 and specified **R** M, after an overload of 3 x **I** PN ± 0.2 mA **I** OT Temperature variation of **I** O - 10°C .. + 85°C ± 0.3 ± 0.5 mA - 40°C .. - 10°C ± 0.8 mA **t** r Response time[ 1)] to 90 % of **I** PN step < 1 µs **di/dt** di/dt accurately followed > 100 A/µs **BW** Frequency bandwidth (- 1 dB) DC .. 150 kHz Po **General data T** A Ambient operating temperature - 40 .. + 85 °C **T** S Ambient storage temperature - 45 .. + 100 °C **R** S Secondary coil resistance @ **T** A = 70°C 48 Ω **T** A = 85°C 51 Ω _**m**_ Mass 550 g Standards EN 50178: 1997 

## Po **General data** 

## **Features** 

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

- Isolated plastic case recognized according to UL 94-V0. 

## **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. 

- Note : 1) With a di/dt of 100 A/µs. 

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

## **Current Transducer LF 1005-S** 

**Isolation characteristics** ~~CT~~ 

|**V**d|Rms voltage for AC isolation test, 50 Hz, 1 mn|3.8|kV|
|---|---|---|---|
|**V**w|Impulse withstand voltage 1.2/50 µs|16|kV|
|||Min||
|**dCp**|Creepage distance|20.6|m m|
|**dCl**|Clearance distance|19.6|m m|
|**CTI**|Comparative Tracking Index  (Group IIIa)|175||



## **Application examples** 

**According to EN 50178 and CEI 61010-1 standards** and following conditions: 

- Over voltage category OV 3 

- Pollution degree PD2 

• Non-uniform field 

|Over voltage category OV 3<br>• Pollution degree PD2<br>• Non-uniform field|Over voltage category OV 3<br>~~ee~~|~~ee~~|
|---|---|---|
||**EN 50178**<br>~~ee~~<br>~~ee~~|**CEI 61010-1**<br>~~ee~~|
|dCp, dCI,<br>**VW**<br>~~ee~~|Rated isolation voltage<br>~~ee~~<br>~~ee~~<br>~~ee~~|Nominal voltage<br>~~ee~~<br>~~ee~~|
|Single isolation|1500 V<br>~~ee~~<br>~~es~~|2000 V|
|Reinforced isolation<br>~~ee~~|1000 V<br>~~ee~~<br>~~es~~|1000 V<br>~~ee~~|



## **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. 

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

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## **Dimensions  LF 1005-S** (in mm. 1 mm = 0.0394 inch) 

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Bottom view<br>Back view<br>Front view<br>Connection<br>Top view<br>**----- End of picture text -----**<br>


## **Mechanical characteristics** 

## **Remarks** 

|•|General tolerance|± 0.5 mm|
|---|---|---|
|•|Transducer fastening||
||Vertical position|2 holes∅5.3 mm|
||Recommended fastening torque <br>or<br>Recommended fastening torque <br>or|2 M5 steel screws<br> 4 Nm or 2.96 Lb. - Ft.<br>4 holes∅4.2 mm<br>4 M4 steel screws<br> 3.2 Nm or 2.37 Lb. - Ft.<br>4 holes∅2.25 mm depth10 mm|
|||4 x PT KA30 screws long 10 mm|
||Recommended fastening torque|0.9 Nm or 0.66 Lb. - Ft.|
|•|Transducer fastening||
||Horizontal position|4 holes∅5.3 mm|
|||4 M5 steel screws|
||Recommended fastening torque|4 Nm or 2.96 Lb. - Ft.|
||or|4 holes∅2.25 mm depth16 mm|
|||4 x PT KA30 screws long 16 mm|
||Fastening torque, maxi|1 Nm or 0.74 Lb. - Ft.|
|•|Primary through-hole|40.5 x 13 mm|
||or|∅38 mm|
|•|Connection of secondary|Molex 6410|
|||3 Tin plated pins.|



- **I** S is positive when **I** P flows in the direction of the arrow. 

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

- Dynamic performances (di/dt and response time) are best with a single bar completely filling the primary hole. 

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

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080715/9 

www .lem.com 

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