= 600 V. Voltage transducer DVM 600 V PN
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1 Voltage transducer DVM 6 V PN = 6 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 9V Current output Input and output connections with M5 studs Compatible with LV 1 family. Advantages Low consumption and low losses Compact design Very low sensitivity to common mode voltage variations Excellent accuracy (offset, sensitivity, linearity) Fast response time Low temperature drift High immunity to external interferences. Standards EN 5155: 27 EN : 215 EN : 21 IEC 611-1: 21 IEC 618-1: 1997 IEC 618-2: 215 IEC 618-3: 24 IEC : 27 IEC : 21. Application Domains Traction (trackside and onboard) Industrial. Applications Single or three phase inverters Propulsion and braking choppers Propulsion converters Auxiliary converters High power drives Substations. N 97.N Page 1/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
2 DVM 6 Absolute maximum ratings Parameter Symbol Unit Value Maximum supply voltage (V P = V,.1 s) ±U C V ±34.6 Maximum supply voltage (working) ( 4 85 C) ±U C V ±26.4 Maximum input voltage ( 4 85 C) V P V 9 Maximum steady state primary voltage ( 4 85 C) V PN V 6 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. Insulation coordination Parameter Symbol Unit Value Comment RMS voltage for AC insulation test, 5 Hz, 1 min U d kv 12 1 % tested in production Impulse withstand voltage 1.2/5 µs Û W kv 3 Partial discharge extinction RMS 1 pc U e V 5 Insulation resistance R IS 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 8 V according to UL 94 Comparative tracking index CTI 6 Shortest distance through air Shortest path along device body Maximum DC common mode voltage V HV+ + V HVand V HV+ V HV- kv 6.3 V PM Environmental and mechanical characteristics Parameter Symbol Unit Min Typ Max Ambient operating temperature T A C 4 85 Ambient storage temperature T S C 5 9 Mass m g 375 Page 2/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
3 DVM 6 Electrical data At T A = 25 C, ±U 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 PN V 6 * Primary voltage, measuring range V PM V 9 9 * Measuring resistance R M Ω * see derating on figure 1 Secondary nominal RMS current N ma 5 * Secondary current ma * Supply voltage ±U C V ±1.8 ±26.4 * Rise time of U C (1-9 %) t rise ms 1 Current U C = ±24 V at V P = V I C ma 3 Offset current I O µa % tested in production Temperature variation of I O I OT µa * C 4 85 C Sensitivity G µa/v ma for primary 6 V Sensitivity error ε G %.3.3 Thermal drift of sensitivity ε GT %.5.5 * Linearity error ε L % of V PM.5.5 ±9 V range Overall accuracy X G % of V PN * 25 C; 1 % tested in production 4 85 C Output RMS noise current I no µa 3 1 Hz to 1 khz Reaction 1 % of V PN t ra µs 3 Response 9 % of V PN t r µs 5 6 to 6 V step, 6 kv/µs Frequency bandwidth BW khz Start-up time t start ms * Primary resistance R 1 MΩ 5.5 * Total primary power V PN P P W.7 * db 1 db 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, minimum and maximum values are determined during the initial characterization of the product. Page 3/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
4 DVM 6 Typical performance characteristics Maximum measuring resistance (Ohm) T A = C Uc = ±13.4 to ±21.6 V Uc = ±1.8 V Electrical offset drift (µa) 15 5 Max Typical Min Measuring range (V) Ambient temperature ( C) Figure 1: Maximum measuring resistance Figure 2: Electrical offset thermal drift R M max = min ( 12 (U 1.4) C ; V P V P 25) Ω Overall accuracy (%) Max Typical Min Sensitivity drift (%) Max Typical Min Ambient temperature ( C) Ambient temperature ( C) Figure 3: Overall accuracy in temperature Figure 4: Sensitivity thermal drift Input V P : 21 V/div Output : 5 µa/div Timebase: 2 µs/div Input V P : 1. V/div Output : 8.3 ma/div Timebase: 1 µs/div Figure 5: Typical step response ( to 6 V) Figure 6: Detail of typical common mode perturbation (42 V step with 6 kv/µs, R M = 1 Ω) Page 4/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
5 DVM 6 Typical performance characteristics Typical supply current (ma) T A = 25 C, V P = V Typical supply current (ma) UC = +/- 24V UC = +/- 15V 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 5/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
6 DVM 6 Typical performance characteristics e no (dbvrms/hz 1/2) Ino (A RMS) 1E-4 1E-5 1E-6 1E-7 1E Figure 11: Typical noise voltage density e no with R M = 5 Ω Figure 12: Typical total output RMS noise current with R M = 5 Ω Linearity error (% of V PN ) Primary voltage (V) Figure 11 (noise voltage density) shows that there are no significant discrete frequencies in the output. Figure 12 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: I no(f1 to f2) = 2 I no(f2) I no(f1) with I no (f) read from figure 12 (typical, RMS value). Example: What is the noise from 1 to 1 khz? Figure 12 gives I no (1 Hz) = 1. µa and I no (1 khz) = 3.13 µa. The output RMS noise current is therefore. ( ) 2 ( ) 2 = 2.97 µα 2 Figure 13: Typical linearity error at 25 C Page 6/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
7 DVM 6 The schematic used to measure all electrical parameters are: VP +HV -HV Isolation barrier Figure 14: Standard characterization schematics for current output transducers (R M = 1 Ω unless otherwise noted) Transducer simplified model The static model of the transducer at temperature T A is: = G V P + ε In which ε = I OE + I OT (T A ) + ε G G V P + ε GT (T A ) G V P + ε L G V PM : secondary current (A) G: sensitivity of the transducer (A/V) V P : primary voltage (V) V PM : primary voltage, measuring range (V) T A : ambient operating temperature ( C) I OE : electrical offset current (A) I OT (T A ): temperature variation of I O at temperature T A (A) ε G : sensitivity error at 25 C ε GT (T A ): thermal drift of sensitivity at + - Performance parameters definition M R M +UC V -UC Sensitivity and linearity To measure sensitivity and linearity, the primary voltage (DC) is cycled from to V PM, then to V PM and back to (equally spaced V PM /1 steps). The sensitivity G is defined as the slope of the linear regression line for a cycle between ±V PM. 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 OE is the residual output current when the input voltage is zero. The temperature variation I OT of the electrical offset current I OE 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 PN, relative to the rated value V PN. 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 % I ε L : temperature T A linearity error V P t r 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: 1 % t ra t ε = N ii =1 2 ε ii Figure 15: Response time t r and reaction time t ra Page 7/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
8 DVM 6 Dimensions (in mm) d CI d Cp Connection +U C R M -U C 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 5 N m 2 M5 threaded studs 2.2 N m 3 M5 threaded studs 2.2 N m 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, sensitivity, unidirectional measurements...), please contact us. 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. Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (e.g. primary connection, power supply). Ignoring this warning can lead to injury and/or cause serious damage. Page 8/8 1January217/version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
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Ultra-stable, high precision (ppm class) fluxgate technology DS Series current transducer for non-intrusive, isolated DC and AC current measurement up to 3000A Features ppm linearity 0 ppm offset Current
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