AP 50 B420L

## **AC Current transducer AP-B420L** 

## **I = 10 .. 400 A PN** 

Split-core transducer for the electronic measurement of AC sinusoidal waveform currents, with galvanic isolation between the primary circuit (high power) and the secondary circuit (electronics). Switch selectable measuring ranges and RMS 4-20mA current output (loop powered). 

## **Electrical data** 

Primary Nominal Current Output Current **Type** RoHS since IPN (A.t.rms) IOUT (mA) date code 10,25,50 4-20 **AP 50 B420L** 47129 50,75,100 4-20 **AP 100 B420L** 47113 100,150,200 4-20 **AP 200 B420L** 47150 200,300,400 4-20 **AP 400 B420L** 47150 **R** L Load resistance, with **V** C = + 24 V DC[ 1)] < 350 Ω **V** C Supply voltage (loop powered) + 12 .. 24 V DC **I** SL Output current limitation[ 2)] < 25 mA **Î** P Overload capability[ 3)] no limitation 

## **Accuracy-Dynamic performance data** 

**X** Accuracy @ **I** PN, **T** A = 25°C (excluding offset) < ± 1 % of **I** PN **ε** L Linearity error (0 .. ± **I** PN) < ± 0.5 % of **I** PN **I** OE Electrical offset current @ **T** A = 25°C 4 mA **TCI** OE Temperature coefficient of **I** OE ± 1 µA/K **TCI** OUT Temperature coefficient of **I** OUT (% of reading) ± 0.1 %/K **t** r Response time to 90 % of **I** PN step < 150 m s **BW** Frequency bandwidth (± 1 %) 30 .. 2000 Hz 

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Load Resistance v s. Supply  Voltage<br>Notes : [1)] Max. Load Resistance vs. Supply Voltage<br>30<br>25<br>20<br>15<br>10<br>5<br>0<br>0 50 100 150 200 250 300 350 400<br>Load Resistance<br>2) The output current will never exceed this value for safety and protection<br>reasons. The output value is not valid when measuring above the primary<br>nominal current value.<br>Supply Voltage<br>**----- End of picture text -----**<br>


## **Features** 

- RMS output (average) 

- Split-core type 

- Loop powered 4-20mA current output 

- DIN rail or Panel mounting 

- Switch selectable measuring ranges 

- Isolated plastic case recognized according to UL94-V0. 

## **Advantages** 

- Large aperture for cable up to Ø18mm 

- High isolation between primary and secondary circuits 

- Eliminates insertion loss 

- Easy installation 

## **Applications** 

- _**Automation systems**_ 

   - Analog current reading for remote monitoring (e.g. motor) and software alarms. 

- _**Panel meters**_ Simple connection to power consumption displays. 

## **Application domain** 

   - Energy and Automation 

- 3) Although the transducer can withstand very high currents, the measuring performance specified in the datasheet is valid within the 4-20 mA output range only. 

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

071022/6 

www.lem.com 

## **Current Transducer AP-B420L** 

## **General data** 

|**T**A|Ambient operating temperature|- 20 .. + 60|°C|
|---|---|---|---|
|**T**S|Ambient storage temperature|- 20 .. + 85|°C|
|**_m_**|Mass|90|g|
|**IPxx**|Protection degree|IP20||
|**Isolation characteristics**||||
|**V**b|Rated isolation voltage rms4)|300|V|
||with IEC 61010-1 standards and following conditions :|||
||- Reinforced isolation|||
||- Over voltage category CAT III|||
||- Pollution degree PD2|||
||- Heterogeneous field|||
|**V**d|Rms voltage for AC isolation test5), 50 Hz, 1min|5|kV|
|**V**e|Partial discharge extinction voltage rms @ 10 pC|1.5|kV|
|**V**w|Impulse withstand voltage 1.2/50µs|6.1|kV|
|**dCp**|Creepage distance|5.5|m m|
|**dCl**|Clearance distance|5.5|m m|
|**CTI**|Comparative tracking index (Group I)|600||



Notes :[4)] If insulated cable is used for the primary circuit, the voltage category could be improved according to the insulation characteristics given by the cable manufacturer. 

|manufacturer.||
|---|---|
|e.g.||
|Cable insulation (primary)|Category|
|HAR 05|600V CAT III|
|HAR 07|1000V CAT III|



- 5) Between primary (completely filling the aperture) and secondary. 

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

071022/6 

www.lem.com 

## **Current Transducer AP-B420L** 

## CT **Safety and warning notes** 

In order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions, please read these instructions thoroughly! 

Safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the limits of the technical specifications. 

Ensure you get up-to-date technical information that can be found in the latest associated datasheet under www.lem.com. 

## **Caution! Risk of danger** 

Ignoring the warnings can lead to serious injury and/or cause damage! 

The electric measuring transducer may only be installed and put into operation by qualified personnel that have received an appropriate training. 

The corresponding national regulations shall be observed during installation and operation of the transducer and any electrical conductor. 

The transducer shall be used in electric/electronic equipment with respect to applicable standards and safety requirements and in accordance with all the related systems and components manufacturers’ operating instructions. 

## **Caution! Risk of electrical shock** 

When operating the transducer, certain parts of the module may carry hazardous live voltage (e.g. primary conductor, power supply). 

The user shall ensure to take all measures necessary to protect against electrical shock. 

The transducer is a built-in device containing conducting parts that shall not  be accessible after installation. A protective enclosure or additional insulation barrier may be necessary. 

The transducer shall not be put into operation if the jaw opening is open (split core version) or the installation is not completed. 

Installation and maintenance shall be done with the main power supply disconnected except if there are no hazardous live parts in or in close proximity to the system and if the applicable national regulations are fully observed. 

Safe and trouble-free operation of this transducer can only be guaranteed if transport, storage and installation are carried out correctly and operation and maintenance are carried out with care. 

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

071022/6 

www.lem.com 

## **Dimensions  AP(R)-B420L** (unit : mm,  1mm = 0.0394 inch) 

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Front View Left View<br>55<br>16.40<br>20<br>Range Selection Switch<br>40(distance between screws)<br>To, ie 37<br>Axis of aperture 25<br>67<br>Plug-in connector included : XW4B-03C1-H1 (OMRON)<br>18.50<br>Bottom View<br>4.70<br>14.80<br>69<br>DIN size 35.50<br>33.50<br>21<br>18.50<br>**----- End of picture text -----**<br>


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Load<br>24 VDC Power<br>4-20mA (Controller,<br>Meter, etc,)<br>(-)<br>(+)<br>she AP/APR<br>Output<br>Connector<br>3none2(-) 1(+)<br>o y<br>Front Range Switch<br>v<br>OUT Is<br>Ip<br>**----- End of picture text -----**<br>


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+24VDC<br>OUT Is<br>GND<br>**----- End of picture text -----**<br>


## **Connections** 

- Wires up to ∅ 2 mm 

- Female connector provided (spring terminal blocks) 

- User-friendly spring-cage connection for no-tool direct conductor connection 

## **Mechanical characteristics** 

- General tolerance ± 1 mm 

- Primary aperture 

   - ∅ 18.5 mm 2 holes ∅ 4.0 mm 

- Panel mounting 

- Distance between holes 40.0 mm 

- For panel mounting, replace M4 screws by new one (not supplied) with appropriate length to panel´s thickness. 

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

071022/6 

www.lem.com