V P N. Voltage transducer DVL 1000 = 1000 V

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1 Voltage transducer DVL 1 V P N = 1 V For the electronic measurement of voltage: DC, AC, pulsed..., with galvanic separation between the primary and the secondary circuit. Features Bipolar and insulated measurement up to 15 V Current output Input and output connections with M5 studs Compatible with AV 1 family. Advantages Low consumption and low losses Compact design Good behavior under common mode variations Excellent accuracy (offset, sensitivity, linearity) Good response time Low temperature drift High immunity to external interferences. Applications Single or three phase inverters Propulsion and braking choppers Propulsion converters Auxiliary converters High power drives Substations. Standards EN 5155: 27 EN 5178: 1997 EN : 21 EN : 26 UL 58: 213. Application Domain Traction (fixed and onboard) Industrial. N 97.H9.6.. Page 1/9

2 Absolute maximum ratings DVL 1 Parameter Symbol Unit Value Maximum supply voltage (V P = V,.1 s) ± max V ±34 Maximum supply voltage (working) ( 4 85 C) ± max V ±26.4 Maximum input voltage ( 4 85 C) V P max V 15 Maximum steady state input voltage ( 4 85 C) V P N max V 1 see derating on figure 2 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 58: Ratings and assumptions of certification File # E Volume: 2 Section: 7 Standards USR indicated investigation to the Standard for Industrial Control Equipment UL 58. CNR Indicated investigation to the Canadian standard for Industrial Control Equipment CSA C22.2 No Conditions of acceptability When installed in the end-use equipment, consideration shall be given to the following: Marking 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). Only those products bearing the UL or UR Mark should be considered to be Listed or Recognized and covered under UL s Follow- Up Service. Always look for the Mark on the product. Page 2/9

3 DVL 1 Insulation coordination Parameter Symbol Unit Value Comment RMS voltage for AC insulation test, 5 Hz, 1 min U d kv % tested in production Impulse withstand voltage 1.2/5 µs Û W kv 16 Partial discharge extinction RMS 1 pc U e V 27 Insulation resistance R INS MΩ 2 measured at 5 V DC Clearance (pri. - sec.) d CI mm Creepage distance (pri. - sec.) d Cp mm Case material - - See dimensions drawing on page 9 V according to UL 94 Comparative tracking index CTI 6 Maximum DC common mode voltage V HV+ + V HVand V HV+ V HV- kv 4.2 V P M Shortest distance through air Shortest path along device body Environmental and mechanical characteristics Parameter Symbol Unit Min Typ Max Ambient operating temperature C 4 85 Ambient storage temperature T S C 5 9 Mass m g 29 Page 3/9

4 Electrical data DVL 1 At = 25 C, ± = ±24 V, R M = 1 Ω, unless otherwise noted. Lines with a * in the conditions column apply over the 4 85 C ambient temperature range. Parameter Symbol Unit Min Typ Max Conditions Primary nominal RMS voltage V P N V 1 * Primary voltage, measuring range V P M V * Measuring resistance R M Ω 133 * Secondary nominal RMS current N ma 5 * Secondary current ma * Supply voltage ± V ±13.5 ±24 ±26.4 * See derating on figure 2. For V P M < 15 V, max value of R M is given on figure 1 Rise time of (1 9 %) t rise ms 1 Current = ±24 V at V P = V I C ma 2 25 Offset current I O μa % tested in production Temperature variation of I O I O T µa C C Sensitivity G µa/v 5 5 ma for primary 1 V Sensitivity error ε G %.2.2 Thermal drift of sensitivity ε G T %.5.5 * Linearity error ε L % of V P M.5.5 * Overall accuracy X G % of V P N * 25 C; 1 % tested in production C Output RMS noise current I no μa 1 1 Hz to 1 khz Reaction 1 % of V P N t ra μs 3 Response 9 % of V P N t r μs 5 6 to 1 V step, 6 kv/μs Frequency bandwidth BW khz Start-up time t start ms * db 1 db.1 db Resistance of primary (winding) R P MΩ 11.3 * Total primary power V P N P P W.9 * 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. 1 % 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 %. 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 %, corresponding to an interval between sigma and +sigma for a normal distribution. Typical, maximal and minimal values are determined during the initial characterization of a product. Page 4/9

5 Typical performance characteristics DVL 1 Maximum measuring resistance (Ohm) = 4 85 C = 13.5 to 26.4 V Measuring range (V) Figure 1: Maximum measuring resistance Minimum measuring resistance (Ohm) = ±24 V = ±15 V = 4 85 C Nominal input voltage (V) Figure 2: Minimum measuring resistance The ±24 V is only applicable for = 8 85 C For under 8 C, the minimum measuring resistance is Ω whatever Electrical offset drift (μa) Max Typical Min Overall accuracy (% V P N ) Max Mean Min Ambient temperature ( C) Figure 3: Electrical offset thermal drift Ambient temperature ( C) Figure 4: Overall accuracy in temperature Sensitivity drift (% V P M ) Max Typical Min Ambient temperature ( C) Input V P : 2 V/div Output : 1 ma/div Timebase: 2 µs/div Figure 5: Sensitivity thermal drift Figure 6: Typical step response ( to 1 V) Page 5/9

6 Typical performance characteristics continued DVL 1 Typical supply current (ma) = 25 C, V P = V Typical supply current (ma) = 15 V 5 = 24V Supply voltage ( V) Ambient temperature ( C) Figure 7: Supply current function of supply voltage Figure 8: Supply current function of temperature Gain (db) Phase (deg) Figure 9: Typical frequency and phase response Gain (db) Phase (deg) Figure 1: Typical frequency and phase response (detail) Page 6/9

7 DVL 1 Typical performance characteristics continued Input V P : 5 V/div Output : 4 ma/div Timebase: 1 µs/div Input V P : 5 V/div Output : 5 µa/div Timebase: 2 µs/div Figure 11: Typical common mode perturbation (1 V step with 6 kv/µs R M = 1 Ω) Figure 12: Detail of typical common mode perturbation (1 V step with 6 kv/µs, R M = 1 Ω) e no (dbv RMS/Hz 1/2 ) I no (A RMS) 1E-4 1E-5 1E-6 1E-7 1E Figure 13: Typical output RMS noise voltage spectral density e no with R M = 5 Ω Figure 14: Typical total output RMS noise current with R M = 5 Ω Linearity error (% V P M ) Primary voltage (V) Figure 13 (output RMS noise voltage spectral density) shows that there are no significant discrete frequencies in the output. Figure 14 confirms the absence of steps in the total output RMS noise current that would indicate discrete frequencies. To calculate the noise in a frequency band f1 to f2, the formula is: I no (f1 to f2) = I no (f2) 2 I no (f1) 2 with I no (f) read from figure 14 (typical, RMS value). Example: What is the noise from 1 to 1 Hz? Figure 14 gives I no (1 Hz) =.26 µa and I no (1 Hz) =.8 µa. The output RMS noise current is therefore. Figure 15: Typical linearity error at 25 C ( ) 2 ( ) 2 =.76 µa Page 7/9

8 The schematic used to measure all electrical parameters are: Performance parameters definition Sensitivity and linearity DVL 1 Figure 16: Standard characterization schematics for current output transducers (R M = 5 Ω unless otherwise noted) Transducer simplified model The static model of the transducer at temperature is: = G V P + ε In which ε = I O E + I O T ( ) + ε G G V P + ε G T ( ) G V P + ε L G V P M : secondary current (A) G : sensitivity of the transducer (μa/v) V P : primary voltage (V) V P M : primary voltage, measuring range (V) : ambient operating temperature ( C) I O E : electrical offset current (A) I O T ( ) : temperature variation of I O at temperature (A) ε G : sensitivity error at 25 C ε G T ( ) : thermal drift of sensitivity at temperature : linearity error ε L V P +HV HV Isolation barrier 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: + M R M + V To measure sensitivity and linearity, the primary voltage (DC) is cycled from to V P M, then to V P M and back to (equally spaced V P M /1 steps). The sensitivity G is defined as the slope of the linear regression line for a cycle between ±V P M. The linearity error ε L 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 I O E is the residual output current when the input voltage is zero. The temperature variation I O T of the electrical offset current I O E is the variation of the electrical offset from 25 C to the considered temperature. Overall accuracy The overall accuracy X G is the error at ± V P N, relative to the rated value V P N. It includes all errors mentioned above. Response and reaction times The response time t r and the reaction time t ra are shown in the next figure. Both depend on the primary voltage dv/dt. They are measured at nominal voltage. 1 % 9 % V P 1 % t r ε = N ii =1 2 ε ii Figure 17: Response time t r and reaction time t ra t ra t Page 8/9

9 Dimensions (in mm) DVL 1 d CI d Cp Connection R M Mechanical characteristics General tolerance Transducer fastening Recommended fastening torque Connection of primary Recommended fastening torque Connection of secondary Recommended fastening torque Remarks ±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 Safety This transducer must be used in limited-energy secondary circuits according to IEC 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. is positive when a positive voltage is applied on +HV. 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 ANE1254 available on our Web site: Products/Product Documentation. This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (e.g. primary connections, 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. Page 9/9

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