 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Current Transducer LA 25-NP/SP7 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 = 2.5 A 16160 Electrical data IPN IPM RM Primary nominal current rms Primary current, measuring range Measuring resistance @ 2.5 A maxi @ 3.6 A maxi Secondary nominal current rms Conversion ratio Supply voltage ( 5 %) Current consumption with 15 V 2.5 0 .. 3.6 R M mini R M maxi 100 320 100 190 25 10 : 1000 15 10 + IS A A mA V mA Features * Closed loop (compensated) multiturns current transducer using the Hall effect * Isolated plastic case recognized according to UL 94-V0. ISN KN VC IC Special features * IPN = 2.5 A * IPM = 0 .. 3.6 A * K N = 10 : 1000. Accuracy - Dynamic performance data X L Typical accuracy @ IPN , TA = 25C Linearity error Offset current 2) @ IP = 0, TA = 25C Magnetic offset current 3) @ IP = 0, after an overload of 3 x IPN Temperature variation of IO 0C .. + 25C + 25C .. + 70C Response time 4) to 90 % of IPN step Frequency bandwidth (- 1 dB) 0.5 < 0.2 Typ Maxi 0.05 0.15 0.05 0.15 0.06 0.25 0.10 0.35 <1 DC .. 150 % % mA mA mA mA s kHz 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. IO IOM IOT tr BW General data TA TS RP RS LP R IS m Ambient operating temperature Ambient storage temperature Primary coil resistance @ TA = 25C Secondary coil resistance @ TA = 70C Insertion inductance Isolation resistance @ 500 V, TA = 25C Mass Standards 0 .. + 70 C - 25 .. + 85 C < 8.5 m 110 5.5 H > 1500 M 22 g EN 50178: 1997 Applications * AC variable speed drives and servo * Static converters for DC motor drives * Battery supplied applications * Uninterruptible Power Supplies * Switched Mode Power Supplies * Power supplies for welding applications. (SMPS) (UPS) motor drives Application Domain Notes: 1) 2) 3) 4) Pollution class 2 Measurement carried out after 15 mn functioning The result of the coercive field of the magnetic circuit With a di/dt of 100 A/s. * Industrial. Page 1/3 070305/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. w w w .lem.com Current Transducer LA 25-NP/SP7 Isolation characteristics Vd Vw dCp dCl CTI Rms voltage for AC isolation test, 50 Hz, 1 min Impulse withstand voltage 1.2/50 s Creepage distance Clearance distance Comparative Tracking Index (Group IIIa) 2.5 16 Mini 19.5 19.5 175 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 1600 V 800 V IEC 61010-1 Nominal voltage 1600 V 800 V 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 070305/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. w w w .lem.com Dimensions LA 25-NP/SP7 (in mm. 1 mm = 0.0394 inch) Right view Bottom view Top view Model + N SP Date code Connection Back view Mechanical characteristics * General tolerance * Fastening & connection of primary 0.2 mm 2 pins 0.635 x 0.635 mm * Fastening & connection of secondary 3 pins 1 mm * Recommended PCB hole 1.2 mm Remark * IS is positive when IP flows from terminal + to terminal -. Page 3/3 070305/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. w w w .lem.com |
Price & Availability of LA25-SP7
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |