LV25-400

Voltage Transducer LV 25-400 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). VPN = 400 V Electrical data VPN VP IPN RM Primary nominal r.m.s. voltage Primary voltage, measuring range Primary nominal r.m.s. current Measuring resistance with ± 12 V with ± 15 V ISN KN VC IC Vd @ ± 400 V max @ ± 600 V max @ ± 400 V max @ ± 600 V max 400 V 0 .. ± 600 V 10 mA RM min RM max 30 30 100 100 200 100 320 180 Ω Ω Ω Ω Features •Closed loop (compensated) voltage transducer using the Hall effect •Transducer with insulated plastic case recognized according to UL 94-V0 •Primary resistor R 1 and transducer mounted on printed circuit board 128 x 60 mm. Secondary nominal r.m.s. current Conversion ratio Supply voltage (± 5 %) Current consumption R.m.s. voltage for AC isolation test 1), 50 Hz, 1 mn 25 mA 400 V / 25 mA ± 12 .. 15 V 10 (@ ± 15 V) + IS mA 4.1 kV Advantages •Excellent accuracy •Very good linearity •Low thermal drift •High immunity to external interference. Accuracy - Dynamic performance data XG ε L Overall Accuracy @ VPN , TA = 25°C Linearity Offset current @ IP = 0, TA = 25°C Thermal drift of IO Response time @ 90 % of VP max ± 0.8 < 0.2 Max ± 0.15 ± 0.10 ± 0.60 ± 0.10 ± 0.60 15 Typ % % mA mA mA µs Applications •AC variable speed drives and servo motor drives IO IOT tr - 25°C .. + 25°C + 25°C .. + 70°C •Static converters for DC motor drives •Uninterruptible Power Supplies (UPS) General data TA TS N P R1 RS m Ambient operating temperature Ambient storage temperature Turns ratio Total primary power loss Primary resistance @ TA = 25°C Secondary coil resistance @ TA = 70°C Mass Standards 2) 1) 2) •Power supplies for welding applications. - 25 .. + 70 - 40 .. + 85 2500 : 1000 4 40 110 60 EN 50178 °C °C W kΩ Ω g Notes : Between primary and secondary A list of corresponding tests is available 980909/2 LEM Components w w w .lem.com Dimensions LV 25-400 Front view (in mm. 1 mm = 0.0394 inch) Top view Standard 00 or N° SP.. Year Week Secondary terminals Terminal + : supply voltage + 12 .. 15 V Terminal M : measure Terminal - : supply voltage - 12 .. 15 V Connection Mechanical characteristics •General tolerance •Fastening •Connection of primary •Connection of secondary ± 0.3 mm 4 holes ∅ 4.2 mm Faston 6.3 x 0.8 mm Faston 6.3 x 0.8 mm Remarks •IS is positive when VP is applied on terminal +HT. •The primary circuit of the transducer must be linked to the connections where the voltage has to be measured. •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.