Voltage Transducer CV 3-500 VPN = 350 V For the electronic measurement of voltages : DC, AC, pulsed..., with a galvanic isolation between the primary circuit (high voltage) and the secondary circuit (electronic circuit). Electrical data VPN VP VS KN RL CL VC IC Vd Ve Primary nominal r.m.s. voltage Primary voltage, measuring range Secondary analog voltage @ VP max Conversion ratio Load resistance Capacitive loading Supply voltage (± 5 %) Current consumption R.m.s. voltage for AC isolation test, 50 Hz, 1 mn R.m.s. voltage for partial discharge extinction @ 10 pC 350 0 .. ± 500 10 500 V / 10 V ≥1 ≤5 ± 15 32 + VS / R L 6 2 V V V Typ Overall accuracy @ VP max VO Offset voltage @ VP = 0 TA = 25°C - 40°C .. + 85°C TA = 25°C - 40°C .. + 85°C tr Response time 1) @ 90 % of VPN dv/dt dv/dt accurately followed f Frequency bandwidth (- 1 dB) @ VPN Max ± 0.2 ± 0.6 ± 5.0 ± 13.0 0.3 500 DC .. 300 % % mV mV µs V/µs kHz Notes : Ambient operating temperature Ambient storage temperature Total primary power loss Primary resistance Mass Standards 2) 1) 2) • Insulated plastic case recognized according to UL 94-V0 • Patent pending. Advantages • • • • • • Excellent accuracy Very good linearity Low thermal drift Low response time High bandwidth High immunity to external interference • Low disturbance in common mode. Applications • AC variable speed drives and servo motor drives General data TA TS P R1 m • Closed loop (compensated) voltage transducer kΩ nF V mA kV kV Accuracy - Dynamic performance data XG Features • Static converters for DC motor drives • Uninterruptible Power Supplies - 40 .. + 85 - 45 .. + 90 3.1 40 560 EN 50155 °C °C W kΩ g (UPS) • Power supplies for welding applications. With a dv/dt of 500 V/µs A list of corresponding tests is available. 011107/8 LEM Components www.lem.com Dimensions CV 3-500 (in mm. 1 mm = 0.0394 inch) Front view Left view Secondary terminals Terminal + : supply voltage + 15 V Terminal M : measure Terminal 0 : 0 V Terminal - : supply voltage - 15 V Connection Top view Mechanical characteristics • • • • • General tolerance Fastening Connection of primary Connection of secondary Fastening torque Remarks ± 0.3 mm 3 holes ∅ 5.5 mm M5 threaded studs M5 threaded studs 2.2 Nm or 1.62 Lb. -Ft. • VS is positive when VP is applied on terminal +HT. • CEM tested with a shielded secondary cable. Shield connected to 0 V at both ends, or disconnected. • This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.