Current Transducer CAS series IPN = 6, 15, 25, 50 A Ref: CAS 6-NP, CAS 15-NP, CAS 25-NP, CAS 50-NP For the electronic measurement of current: DC, AC, pulsed..., with galvanic isolation between the primary and the secondary circuit. Features Applications ●● Closed loop (compensated) multi-range ●● AC variable speed and servo motor drives current transducer ●● Static converters for DC motor drives ●● Voltage output ●● Battery supplied applications ●● Single supply ●● Uninterruptible Power Supplies (UPS) ●● Isolated plastic case material recognized ●● Switched Mode Power Supplies (SMPS) according to UL 94-V0 ●● Power supplies for welding applications. ●● Compact design for PCB mounting. Advantages Standards ●● EN 50178 ●● Very low temperature coefficient of offset ●● UL 508 ●● Very good dv/dt immunity ●● IEC 61010-1 (safety). ●● LTS compatible footprint ●● Reduced height. Application Domain ●● Industrial. Page 1/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Absolute maximum ratings Parameter Symbol Unit Value VC V 7 °C 110 A 20 x IPN kV 4 Supply voltage Primary conductor temperature Maximum primary current IP max ESD rating, Human Body Model (HBM) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum ratings for extended periods may degrade reliability. Isolation characteristics Parameter Symbol Unit Value RMS voltage for AC isolation test 50/60Hz/1 min Vd kV 4.2 Impulse withstand voltage 1.2/50 µs Vw kV 7.6 Partial discharge extinction voltage @ 10 pC (rms) Ve V 1000 Clearance distance (pri. - sec.) dCI mm 7.7 Shortest distance through air Creepage distance (pri. - sec.) dCp mm 7.7 Shortest path along device body Creepage distance (pri. .- sec.) - mm 6.3 When mounted on PCB with recommended layout Case material - - V0 according to UL 94 CTI V 600 Application example - - Reinforced isolation, non 300 V CAT III uniform field according to PD2 EN 50178, EN 61010 Application example - - Simple isolation, non 600 V CAT III uniform field according to PD2 EN 50178, EN 61010 According to UL 508: primary potential involved in Volts RMS AC or DC - V Symbol Unit Min Ambient operating temperature TA °C -40 85 Ambient storage temperature TS °C -55 105 Mass m g Comparative tracking index Comment For use in a pollution degree 2 environment 600 Environmental and mechanical characteristics Parameter Standards Typ Max Comment 9 EN 50178, IEC 60950-1, IEC 61010-1, IEC 61326-1, UL 508 Page 2/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Electrical data CAS 6-NP At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted. Parameter Max Comment Unit Primary nominal current rms IPN A Primary current, measuring range IPM A Number of primary turns NP - Supply voltage VC V Current consumption IC mA Output voltage VOUT V Output voltage @ IP = 0 A VOUT V Electrical offset voltage VOE mV -10.4 10.4 100% tested VOUT - 2.5 V Electrical offset current referred to primary IOE A -0.1 0.1 100% tested TCVOUT ppm/K ±10 ±80 ppm/K of 2.5 V - 40°C .. 85°C Theoretical sensitivity Gth mV/A 104.2 Sensitivity error εG % TCG ppm/K Linearity error εL % of IPN -0.1 0.1 Magnetic offset current (10 x IPN) referred to primary IOM A -0.1 0.1 Output current noise (spectral density) rms 100 .. 100 kHz referred to primary ino µA/Hz½ 36 Peak-peak output ripple at oscillator frequency f = 450 kHz (typ.) - mV 40 Reaction time @ 10 % of IPN tra Response time @ 90 % of IPN Temperature coefficient of VOUT @ IP = 0 A Temperature coefficient of G Min Typ Symbol 6 -20 20 1,2,3 4.75 5 15 + IP (mA) NS 0.375 5.25 20 + IP (mA) NS NS = 1731 turns 4.625 2.5 -0.7 625 mV/ IPN 0.7 100% tested ±40 - 40°C .. 85°C RL = 1 kΩ 160 RL = 1 kΩ µs 0.3 RL = 1 kΩ di/dt = 18 A/µs tr µs 0.3 RL = 1 kΩ di/dt = 18 A/µs Frequency bandwidth (± 1 dB) BW kHz 200 RL = 1 kΩ Frequency bandwidth (± 3 dB) BW kHz 300 RL = 1 kΩ Overall accuracy XG % of IPN 2.5 Overall accuracy @ TA = 85°C XG % of IPN 4.6 Accuracy X % of IPN 0.8 Accuracy @ TA = 85°C X % of IPN 3.0 Page 3/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Electrical data CAS 15-NP At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted. Parameter Max Comment Unit Primary nominal current rms IPN A Primary current, measuring range IPM A Number of primary turns NP - Supply voltage VC V Current consumption IC mA Output voltage VOUT V Output voltage @ IP = 0 A VOUT V Electrical offset voltage VOE mV -7.1 7.1 100% tested VOUT - 2.5 V Electrical offset current referred to primary IOE A -0.17 0.17 100% tested TCVOUT ppm/K ±7.5 ±70 ppm/K of 2.5 V - 40°C .. 85°C Theoretical sensitivity Gth mV/A 41.67 Sensitivity error εG % TCG ppm/K Linearity error εL % of IPN -0.1 0.1 Magnetic offset current (10 x IPN) referred to primary IOM A -0.1 0.1 Output current noise (spectral density) rms 100 Hz .. 100 kHz referred to primary ino µA/Hz½ 90 - mV 15 tra Temperature coefficient of VOUT @ IP = 0 A Temperature coefficient of G Peak-peak output ripple at oscillator frequency f = 450 kHz (typ.) Min Typ Symbol 15 -51 51 1,2,3 4.75 5 15 + 5.25 IP (mA) I (mA) 20 + P NS NS 0.375 NS = 1731 turns 4.625 2.5 -0.7 625 mV/ IPN 0.7 100% tested ±40 - 40°C .. 85°C RL = 1 kΩ 60 RL = 1 kΩ µs 0.3 RL = 1 kΩ di/dt = 44 A/µs tr µs 0.3 RL = 1 kΩ di/dt = 44 A/µs Frequency bandwidth (± 1 dB) BW kHz 200 RL = 1 kΩ Frequency bandwidth (± 3 dB) BW kHz 300 RL = 1 kΩ Overall accuracy XG % of IPN 1.9 Overall accuracy @ TA = 85°C XG % of IPN 3.9 Accuracy X % of IPN 0.8 Accuracy @ TA = 85°C X % of IPN 2.7 Reaction time @ 10 % of IPN Response time @ 90 % of IPN Page 4/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Electrical data CAS 25-NP At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted. Parameter Max Comment Unit Primary nominal current rms IPN A Primary current, measuring range IPM A Number of primary turns NP - Supply voltage VC V Current consumption IC mA Output voltage VOUT V Output voltage @ IP = 0 A VOUT V Electrical offset voltage VOE mV -6.25 6.25 100% tested VOUT - 2.5 V Electrical offset current referred to primary IOE A -0.25 0.25 100% tested TCVOUT ppm/K ±6.5 ±60 ppm/K of 2.5 V - 40°C .. 85°C Theoretical sensitivity Gth mV/A 25 Sensitivity error εG % TCG ppm/K Linearity error εL % of IPN -0.1 0.1 Magnetic offset current (10 x IPN) referred to primary IOM A -0.1 0.1 Output current noise (spectral density) rms 100 Hz .. 100 kHz referred to primary ino µA/Hz½ 150 Peak-peak output ripple at oscillator frequency f = 450 kHz (typ.) - mV 10 Reaction time @ 10 % of IPN tra Response time @ 90 % of IPN Temperature coefficient of VOUT @ IP = 0 A Temperature coefficient of G Min Typ Symbol 25 -85 85 1,2,3 4.75 5 15 + 5.25 IP (mA) IP (mA) 20 + NS NS 0.375 NS = 1731 turns 4.625 2.5 -0.7 625 mV/ IPN 0.7 100% tested ±40 - 40°C .. 85°C RL = 1 kΩ 40 RL = 1 kΩ µs 0.3 RL = 1 kΩ di/dt = 68 A/µs tr µs 0.3 RL = 1 kΩ di/dt = 68 A/µs Frequency bandwidth (± 1 dB) BW kHz 200 RL = 1 kΩ Frequency bandwidth (± 3 dB) BW kHz 300 RL = 1 kΩ Overall accuracy XG % of IPN 1.8 Overall accuracy @ TA = 85°C XG % of IPN 3.5 Accuracy X % of IPN 0.8 Accuracy @ TA = 85°C X % of IPN 2.5 Page 5/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Electrical data CAS 50-NP At TA = 25°C, VC = + 5 V, NP = 1 turn, RL = 10 kΩ, unless otherwise noted. Parameter Max Comment Unit Primary nominal current rms IPN A Primary current, measuring range IPM A Number of primary turns NP - Supply voltage VC V Current consumption IC mA Output voltage VOUT V Output voltage @ IP = 0 A VOUT V Electrical offset voltage VOE mV -5.8 5.8 100% tested VOUT - 2.5 V Electrical offset current referred to primary IOE A -0.46 0.46 100% tested TCVOUT ppm/K ±6 ±60 ppm/K of 2.5 V - 40°C .. 85°C Theoretical sensitivity Gth mV/A 12.5 Sensitivity error εG % TCG ppm/K Linearity error εL % of IPN -0.1 0.1 Magnetic offset current (10 x IPN) referred to primary IOM A -0.1 0.1 Output current noise (spectral density) rms 100 Hz .. 100 kHz referred to primary ino µA/Hz½ 300 Peak-peak output ripple at oscillator frequency f = 450 kHz (typ.) - mV 5 Reaction time @ 10 % of IPN tra Response time @ 90 % of IPN Temperature coefficient of VOUT @ IP = 0 A Temperature coefficient of G Min Typ Symbol 50 -150 150 1,2,3 4.75 5 15 + 5.25 IP (mA) IP (mA) 20 + N NS S 0.375 NS = 966 turns 4.625 2.5 -0.7 625 mV/ IPN 0.7 100% tested ±40 - 40°C .. 85°C RL = 1 kΩ 20 RL = 1 kΩ µs 0.3 RL = 1 kΩ di/dt = 100 A/µs tr µs 0.3 RL = 1 kΩ di/dt = 100 A/µs Frequency bandwidth (± 1 dB) BW kHz 200 RL = 1 kΩ Frequency bandwidth (± 3 dB) BW kHz 300 RL = 1 kΩ Overall accuracy XG % of IPN 1.7 Overall accuracy @ TA = 85°C XG % of IPN 3.4 Accuracy X % of IPN 0.8 Accuracy @ TA = 85°C X % of IPN 2.5 Page 6/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Relative Sensitivity (dB) 0.05 0 -0.05 -0.1 0 IP (A) 6 1000 10000 100000 1000000 Frequency (Hz) Figure 2: Frequency response 3.2 6 3.1 6 3.1 5 3.0 5 3.0 2.9 4 4 IP = 6 A 3 2.8 IP (A) 7 VOUT (V) 3.2 7 IP (A) Relative Sensitivity Phase 100 Figure 1: Linearity error IP 2.7 VOUT 2.6 2.7 1 VOUT 2.6 1 0 2.5 0 -1 2.4 -1 0.5 1 1.5 2.8 2 IP 0 2.9 IP = 6 A 3 2 -0.5 2.5 2.4 -2 2 0 2 4 6 8 10 t (µs) t (µs) Figure 3: Step response Figure 4: Step response 800 Primary Voltage VP (V) 10000 1000 ½ ino (μA/Hz ) 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 IP = 6 A 100 10 3.6 600 3.4 400 3.2 200 0 3.0 20 kV/μs -200 VP -400 VOUT 2.8 2.6 -600 -800 1 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7 2.4 -1 0 1 2 3 4 5 t (µs) Frequency (Hz) Figure 5: Input referred noise VOUT (V) -6 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 VOUT (V) Linearity error (% of IPN) 0.1 Phase (°) Typical performance characteristics CAS 6-NP Figure 6: dv/dt Page 7/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 Relative Sensitivity (dB) 0.05 0 -0.05 -0.1 0 IP (A) 15 Relative Sensitivity Phase 100 Figure 7: Linearity error 1000 10000 100000 1000000 Frequency (Hz) Figure 8: Frequency response 17.5 3.2 15 3.1 15 3.1 12.5 3.0 12.5 3.0 IP (A) 10 2.9 IP = 15 A 7.5 5 2.5 2.8 VOUT 2.6 2.5 2.5 0 0.5 1 2.4 -2.5 1.5 2.7 VOUT 2.6 2 4 6 8 10 t (µs) Figure 10: Step response 800 Primary Voltage VP (V) 10000 1000 ½ ino (μA/Hz ) IP 2.4 0 t (µs) Figure 9: Step response 2.8 2.5 -2 2 2.9 IP = 15 A 5 2.7 -2.5 0 10 7.5 IP 0 -0.5 IP (A) 3.2 VOUT (V) 17.5 100 10 3.6 600 3.4 400 3.2 200 0 3.0 20 kV/μs -200 VP -400 VOUT 2.8 2.6 -600 -800 1 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7 2.4 -1 0 Frequency (Hz) Figure 11: Input referred noise VOUT (V) -15 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 IP = 15 A VOUT (V) Linearity error (% of IPN) 0.1 Phase (°) Typical performance characteristics CAS 15-NP 1 2 3 4 5 t (µs) Figure 12: dv/dt Page 8/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 Relative Sensitivity (dB) 0.05 0 -0.05 -0.1 0 IP (A) 100 25 Figure 13: Linearity error 1000 10000 100000 1000000 Frequency (Hz) Figure 14: Frequency response 3.2 29.2 3.2 25.0 3.1 25.0 3.1 20.8 3.0 20.8 3.0 16.7 2.9 16.7 IP = 25 A 12.5 2.8 2.6 4.2 VOUT 2.6 2.5 0.0 2.4 -4.2 4.2 VOUT 0 0.5 1 1.5 2 2.5 2.4 -2 0 2 t (µs) Figure 15: Step response 4 6 8 10 t (µs) Figure 16: Step response 800 Primary Voltage VP (V) 10000 1000 ½ ino (μA/Hz ) 2.8 2.7 2.7 -0.5 12.5 IP IP -4.2 2.9 IP = 25 A 8.3 8.3 0.0 IP (A) 29.2 VOUT (V) IP (A) Relative Sensitivity Phase 100 10 3.6 600 3.4 400 3.2 200 0 3.0 20 kV/μs -200 VP -400 VOUT 2.8 2.6 -600 -800 1 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7 2.4 -1 0 Frequency (Hz) Figure 17: Input referred noise VOUT (V) -25 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 IP = 25 A VOUT (V) Linearity error (% of IPN) 0.1 Phase (°) Typical performance characteristics CAS 25-NP 1 2 3 4 5 t (µs) Figure 18: dv/dt Page 9/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Relative Sensitivity (dB) 0.05 0 -0.05 -0.1 0 IP (A) Figure 19: Linearity error 1000 10000 100000 1000000 Frequency (Hz) Figure 20: Frequency response 3.2 58.3 3.2 50.0 3.1 50.0 3.1 41.7 3.0 41.7 3.0 33.3 2.9 33.3 IP = 50 A 25.0 16.7 8.3 2.8 IP 2.7 VOUT IP (A) 58.3 VOUT (V) IP (A) Relative Sensitivity Phase 100 50 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 IP = 50 A 25.0 16.7 2.8 IP 2.7 VOUT 2.6 2.6 8.3 0.0 2.5 0.0 2.5 -8.3 2.4 -8.3 2.4 -0.5 0 0.5 1 1.5 2 -2 0 2 t (µs) Figure 21: Step response 4 6 8 10 t (µs) Figure 22: Step response 800 Primary Voltage VP (V) 10000 1000 ino (μA/Hz½) 2.9 IP = 50 A 100 10 3.6 600 3.4 400 3.2 200 0 3.0 20 kV/μs -200 VP -400 VOUT 2.8 2.6 -600 -800 1 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7 2.4 -1 0 Frequency (Hz) Figure 23: Input referred noise VOUT (V) -50 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 VOUT (V) Linearity error (% of IPN) 0.1 Phase (°) Typical performance characteristics CAS 50-NP 1 2 3 4 5 t (µs) Figure 24: dv/dt Page 10/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Maximum continuous DC primary current 40 35 CAS 6-NP 30 CAS 15-NP 70 25 IP (A) IP (A) 90 80 20 15 60 50 40 30 20 10 5 10 0 0 0 20 40 60 80 100 0 120 20 40 TA (°C) Figure 25: IP vs TA for CAS 6-NP 80 100 120 Figure 26: IP vs TA for CAS 15-NP 90 80 70 160 140 60 50 40 30 CAS 50-NP 120 CAS 25-NP IP (A) IP (A) 60 TA (°C) 100 80 60 40 20 10 0 20 0 0 20 40 60 80 100 120 0 20 TA (°C) 40 60 80 100 120 TA (°C) Figure 27: IP vs TA for CAS 25-NP Figure 28: IP vs TA for CAS 50-NP The maximum continuous DC primary current plot shows the boundary of the area for which all the following conditions are true: -- IP < IPM -- Junction temperature Tj < 125 °C -- Primary conductor temperature < 110 °C -- Resistor power dissipation < 0.5 x rated power Frequency derating AC Derating max RMS AC current / max DC current 1.25 1 0.75 0.5 0.25 0 10 100 1k 10k 100k 1M f (Hz) Figure 29: Maximum RMS AC primary current / maximum DC primary current vs frequency Page 11/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Performance parameters definition Ampere-turns and amperes Sensitivity and linearity The transducer is sensitive to the primary current linkage QP (also called ampere-turns). To measure sensitivity and linearity, the primary current (DC) is cycled from 0 to IP, then to -IP and back to 0 (equally spaced IP/10 steps). The sensitivity G is defined as the slope of the linear regression line for a cycle between ± IPN. QP=NPIP(At) Where NPIP the number of primary turn (1, 2 or 3 depending on the connection of the primary jumpers) Caution: As most applications will use the transducer with only one single primary turn (NP = 1), much of this datasheet is written in terms of primary current instead of current linkages. However, the ampere-turns (A-t) unit is used to emphasis that current linkages are intended and applicable. Transducer simplified model The static model of the transducer at temperature TA is: VOUT = G QP + error The linearity error εL is the maximum positive or negative difference between the measured points and the linear regression line, expressed in % of IPN. Magnetic offset The magnetic offset current IOM is the consequence of a current on the primary side (“memory effect” of the transducer’s ferro-magnetic parts). It is included in the linearity figure but can be measured individually. It is measured using the following primary current cycle. IOM depends on the current value IP1. In which error = I VOE + VOT (TA) + εG ·QP·G + εL(QPmax)·QPmax·G + TCG·(TA-25)·QP·G With: QP = NPIP QPmax VOUT TA VOE VOT(TA) G εG εL (QPmax) :the input ampere-turns (At) Please read above warning. :the maxi input ampere-turns that have been applied to the transducer (At) :the secondary voltage (V) :the ambient temperature (°C) :the electrical offset voltage (V) :the temperature variation of VO at temperature TA (V) :the sensitivity of the transducer (V/At) :the sensitivity error :the linearity error for QPmax OM = V (t ) − V (t ) 1 ⋅ 2 Gth OUT OUT 1 2 IP (DC) IP1 0A -IP1 t t1 Ip(3) t2 Ip(t 3) Figure 30: Current cycle used to measure magnetic and electrical offset (transducer supplied) This model is valid for primary ampere-turns QP between -QPmax and +QPmax only. Page 12/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Performance parameters definition (continued) Electrical offset Response and reaction times The electrical offset voltage VOE can either be measured when the ferro-magnetic parts of the transducer are: The response time tr and the reaction time tra are shown in figure 31. Both depend on the primary current di/dt. They are measured at nominal ampere-turns. ●● completely demagnetized, which is difficult to realize, ●● or in a known magnetization state, like in the current cycle shown in figure 30. Using the current cycle shown in figure 30, the electrical offset is: V (t ) + V (t ) V = OUT OUT 1 2 2 OE The temperature variation VOT of the electrical offset voltage VOE is the variation of the electrical offset from 25°C to the considered temperature: V (T ) = V (T ) − V (25°C ) OT OE OE Note: the transducer has to be demagnetized prior to the application of the current cycle (for example with a demagnetization tunnel). 100 % 90 % I VOUT Ip tr 10 % tra t Figure 31: Response time tr and reaction time tra Overall accuracy The overall accuracy at 25°C XG is the error in the - IPN .. + IPN range, relative to the rated value IPN. It includes: ●● the electrical offset VOE ●● the sensitivity error eG ●● the linearity error eL (to IPN) The magnetic offset is part of the overall accuracy. It is taken into account in the linearity error figure provided the transducer has not been magnetized by a current higher than IPN. Figure 32: Test connection Page 13/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Application information Filtering and decoupling Supply voltage VC Output VOUT The fluxgate oscillator draws current pulses of up to 30 mA at a rate of ca. 900 kHz. Significant 900 kHz voltage ripple on VC can indicate a power supply with high impedance. At these frequencies the power supply rejection ratio is low, and the ripple may appear on the transducer output VOUT and reference VREF. The transducer has internal decoupling capacitors, but in the case of a power supply with high impedance, it is advised to provide local decoupling (100 nF or more, located close to the transducer). The output VOUT has a very low output impedance of typically 2 Ohms; it can drive 100 pF directly. Adding series Rf = 100 Ohms allows much larger capacitive loads. Empirical evaluation may be necessary to obtain optimum results. The minimum load resistance on VOUT is 1 kOhm. Total Primary Resistance The primary resistance is 0.72 mΩ per conductor In the following table, examples of primary resistance according to the number of primary turns. Number of primary turns Primary resistance RP [ mW ] 1 0.24 Recommended connections IN 2 9 8 OUT 1 10 2 9 3 8 OUT 1 10 2 9 3 8 OUT 1 2 3 1.08 IN 3 10 2.16 IN Page 14/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series CAS Series, PCB footprint Assembly on PCB ●● Recommended PCB hole diameter 1.3 mm for primary pin 0.8 mm for secondary pin ●● Maximum PCB thickness 2.4 mm ●● Wave soldering profile maximum 260°C for 10 s No clean process only. Safety 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. 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 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 15/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com CAS series Dimensions CAS Series (in mm. General linear tolerance ± 0.25 mm) Connection Page 16/16 8March2012/version 7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com