DVL 750-UI

Current Transducer DVL-UI series V = 50 ... 1500 V PN Unipolar voltage - Current output 4-20 mA Ref: DVL 50-UI, DVL 150-UI, DVL 250-UI, DVL 500-UI, DVL 750-UI, DVL 1000-UI, DVL 1500-UI For the electronic measurement of voltage: DC, AC, pulsed..., with galvanic separation between the primary and the secondary circuit. Features Applications ●● Unipolar and insulated measurement up to 1500 V ●● Substations ●● 4-20 mA output ●● Trackside. ●● Input and output connections with M5 studs ●● Compatible with AV 100 family. Standards Advantages ●● EN 50178: 1997 ●● EN 50155: 2007 ●● Low consumption and low losses ●● EN 50124-1: 2001 ●● Compact design ●● EN 50121-3-2: 2006 ●● Good behavior under common mode variations ●● UL 508: 2013. ●● Excellent accuracy (offset, sensitivity, linearity) ●● Good response time Application Domains ●● Traction (fixed and onboard) ●● Low temperature drift ●● High immunity to external interferences. ●● Industrial. N° 97.M3.25.000.0, 97.M3.39.000.0, 97.M3.45.000.0, 97.M3.50.000.0, 97.M3.55.000.0, 97.M3.60.000.0, 97.M3.65.000.0 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice Page 1/9 www.lem.com DVL-UI series Absolute maximum ratings Parameter Symbol Unit Value Maximum supply voltage (VP = 0 V, 0.1 s) ±UC V ±34 Maximum supply voltage (working) (−40 … 85 °C) ±UC V ±26.4 Absolute maximum ratings apply at 25 °C unless otherwise noted. Stresses above these ratings may cause permanent damage. Exposure to absolute maximum ratings for extended periods may degrade reliability. UL 508: Ratings and assumptions of certification File # E189713 Volume: 2 Section: 7 Standards ●● USR indicated investigation to the Standard for Industrial Control Equipment UL 508. ●● CNR Indicated investigation to the Canadian standard for Industrial Control Equipment CSA C22.2 No. 14-13. 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 terminal have not been evaluated for field wiring. 3 - Low voltage circuits are intended to be powered by a circuit derived from an isolating source (such as 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). 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. Page 2/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series Insulation coordination Parameter Symbol Unit Value Comment Rms voltage for AC insulation test, 50 Hz, 1 min Ud kV 8.5 100 % tested in production Impulse withstand voltage 1.2/50 µs ÛW kV 16 Partial discharge extinction rms voltage @ 10 pC Ue V 2700 Insulation resistance RIS MΩ 200 Clearance (pri. - sec.) dCI mm Creepage distance (pri. - sec.) dCp mm See dimensions drawing on page 8 - - V0 according to UL 94 CTI - 600 VHV+ + VHVand |VHV+ - VHV-| kV ≤ 4.2 ≤ VPM Symbol Unit Min Ambient operating temperature TA °C −40 85 Ambient storage temperature TS °C −50 90 Mass m g Case material Comparative tracking index Maximum DC common mode voltage measured at 500 V DC Shortest distance through air Shortest path along device body Environmental and mechanical characteristics Parameter Typ Max 290 Page 3/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series Electrical data At TA = 25 °C, ±UC = ±24 V, RM = 100 Ω, unless otherwise noted. Lines with a * in the conditions column apply over the −40 … 85 °C ambient temperature range. Parameter Symbol Unit Min Typ Max Conditions Primary nominal DC voltage VPN V 0 50 150 250 500 750 1000 1500 Measuring resistance RM Ω 0 555 Secondary nominal DC current ISN mA 4 20 Maximum secondary DC current IS mA 3 21 Supply voltage ±UC V ±13.5 Rise time of UC (10-90 %) trise ms Current consumption @ UC = ±24 V at VP = 0 V IC mA Offset current IO µA −50 Temperature variation of IO IOT µA −120 −150 Sensitivity error εG % −0.2 Thermal drift of sensitivity εGT % −0.5 0.5 * Linearity error εL % of VPN −0.5 0.5 * Overall accuracy XG % of VPN −0.5 0.5 −1 1 25 °C; 100 % tested in production * −40 … 85 °C Output rms noise current Ino µA 10 Reaction time @ 10 % of VPN tra µs 30 Response time @ 90 % of VPN tr µs 50 Frequency bandwidth BW kHz 14 8 2 Start-up time tstart ms 190 Primary resistance R1 MΩ 11.3 2.7 ±24 ±26.4 DVL 50-UI DVL 150-UI DVL 250-UI DVL 500-UI DVL 750-UI DVL 1000-UI DVL 1500-UI Max value of RM is given on * figure 1 * See figure 2 * 100 25 30 0 50 100 % tested in production 120 150 −25 … 85 °C −40 … 85 °C 0 0.2 1 Hz to 100 kHz 60 6 kV/µs −3 dB −1 dB −0.1 dB 250 * * For VPN > 500 V For VPN ≤ 500 V Definition of typical, minimum and maximum values Minimum and maximum values for specified limiting and safety conditions have to be understood as such as well as values shown in “typical” graphs. On the other hand, measured values are part of a statistical distribution that can be specified by an interval with upper and lower limits and a probability for measured values to lie within this interval. Unless otherwise stated (e.g. “100 % tested”), the LEM definition for such intervals designated with “min” and “max” is that the probability for values of samples to lie in this interval is 99.73 %. For a normal (Gaussian) distribution, this corresponds to an interval between −3 sigma and +3 sigma. If “typical” values are not obviously mean or average values, those values are defined to delimit intervals with a probability of 68.27 %, corresponding to an interval between −sigma and +sigma for a normal distribution. Typical, minimum and maximum values are determined during the initial characterization of the product. Page 4/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series 2000 TA = -40 .. 85 °C UC = ±13.5 to ±26.4 V 1600 1200 800 400 0 0 30 60 90 Output Current [mA] Maximum measuring resistance (Ohm) Typical performance characteristics 120 22 20 18 16 14 12 10 8 6 4 2 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 Input Voltage (% of VPN) Input voltage ( V) Figure 1: Maximum measuring resistance Max Typical Min 150 Overall accuracy (% VPN) Electrical offset drift (uA) 250 Figure 2: Output secondary current (DVL 50-UI) 50 -50 -150 -250 -50 -25 0 25 50 75 100 Figure 3: Electrical offset thermal drift Sensitivity drift (% VPN) 0.4 0.80 0.40 0.00 -0.40 -0.80 -1.20 -50 -25 0 25 50 75 100 Figure 4: Overall accuracy in temperature Max Typical Min 0.6 Max Mean Min Ambient temperature (°C) Ambient temperature (°C) 0.8 1.20 Output IS: 4 mA to 20 mA Timebase: 20 µs/div 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -50 -25 0 25 50 75 100 Ambient temperature (°C) Figure 5: Sensitivity thermal drift Figure 6: Typical step response (0 to VPN) Page 5/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series Typical supply current (mA) Typical performance characteristics 50 45 40 35 30 25 20 15 10 5 0 Input VP: 500 V/div Output IS: 500 µA/div Timebase: 20 µs/div Ineg. Ipos. TA = 25 °C, VP = 0 V 0 5 10 15 20 25 30 Supply voltage ( V) Figure 7: S  upply current function of supply voltage Figure 8: D  etail of typical common mode perturbation (1000 V step with 6 kV/µs, RM = 100 Ω) 10 180 0 120 Phase (deg) Gain (dB) -10 -20 -30 -40 0 -60 -120 -50 -60 0.01 60 0.1 1 10 100 -180 0.01 0.1 Frequency (kHz) 1 10 100 Frequency (kHz) Figure 9: Typical frequency and phase response Page 6/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series Typical performance characteristics 1E-4 -90 Ino (A rms) eno (dBVrms/Hz1/2) -100 1E-5 -110 1E-6 -120 -130 1E-7 -140 -150 0.001 0.01 0.1 1 10 100 Frequency (kHz) Figure 10: Typical noise voltage spectral density eno with RM = 50 Ω 1E-8 0.001 0.01 0.1 1 10 100 Frequency (kHz) Figure 11: Typical total output rms noise current with RM = 50 Ω Figure 10 (noise voltage spectral density) shows that there are no significant discrete frequencies in the output. Figure 11 confirms the absence of steps in the total output current noise that would indicate discrete frequencies. To calculate the noise in a frequency band f1 to f2, the formula is: Ino(f1 to f2) = Ino(f2) − Ino(f1) 2 2 with Ino(f) read from figure 11 (typical, rms value). Example: What is the noise from 10 to 100 Hz? Figure 11 gives Ino(10 Hz) = 0.26 µA and Ino(100 Hz) = 0.8 µA. The output rms current noise is therefore. (0.8 × 10−6)2 − (0.26× 10 −6 )2 = 0.76 µΑ Page 7/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series Performance parameters definition The schematic used to measure all electrical parameters are: +UC + +HV VP M IS RM 0V -HV -U C Isolation barrier Figure 12: S  tandard characterization schematics for current output transducers (RM = 50 Ω unless otherwise noted) Transducer simplified model The static model of the transducer at temperature TA is: IS = G⋅VP + ε In which ε = IOE + IOT (TA) + εG⋅G⋅VP + εGT (TA)⋅G⋅VP + εL⋅G⋅VPM IS: secondary current (A) G: sensitivity of the transducer (A/V) VP: primary voltage (V) VPM: primary voltage, measuring range (V) TA: ambient operating temperature (°C) IOE: electrical offset current (A) IOT (TA): temperature variation of IO at temperature TA (A) εG: sensitivity error at 25 °C εGT (TA): thermal drift of sensitivity at temperature TA εL: linearity error This is the absolute maximum error. As all errors are independent, a more realistic way to calculate the error would be to use the following formula: ε= N ∑ε 𝑖𝑖 =1 2 𝑖𝑖 Sensitivity and linearity To measure sensitivity and linearity, the primary voltage (DC) is cycled from 0 to VPM, then to −VPM and back to 0 (equally spaced VPM/10 steps). The sensitivity G is defined as the slope of the linear regression line for a cycle between ±VPM. The linearity error εL is the maximum positive or negative difference between the measured points and the linear regression line, expressed in % of the maximum measured value. Electrical offset The electrical offset current IOE is the residual output current when the input voltage is zero. The temperature variation IOT of the electrical offset current IOE is the variation of the electrical offset from 25 °C to the considered temperature. Overall accuracy The overall accuracy XG is the error at ±VPN, relative to the rated value VPN. It includes all errors mentionned above. Response and reaction times The response time tr and the reaction time tra are shown in the next figure. Both depend on the primary voltage dv/dt. They are measured at nominal voltage. I 100 % 90 % IS IP tr 10 % tra t Figure 13: Response time tr and reaction time tra Page 8/9 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com DVL-UI series Dimensions (in mm) dCI Connection dCp UC IS RM UC Safety Mechanical characteristics ●● General tolerance ●● Transducer fastening Recommended fastening torque ●● Connection of primary Recommended fastening torque ●● Connection of secondary Recommended fastening torque ±1 mm 2 holes ⌀ 6.5 mm 2 M6 steel screws 4 N⋅m 2 M5 threaded studs 2.2 N⋅m 3 M5 threaded studs 2.2 N⋅m 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. Remarks ●● The transducer is directly connected to the primary voltage. ●● The primary cables have to be routed together all the way. ●● The secondary cables also have to be routed together all the way. ●● Installation of the transducer is to be done without primary or secondary voltage present. ●● 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: Products/ Product Documentation. Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary connection, 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. ●● This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. 9May2016/version 0 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice Page 9/9 www.lem.com