S3-WRD active and reactive power combination transmitter with the S3 (T) -WD, S3 (T) -RD same performance, only one set of signals, you can simultaneously measure the line of active and reactive power, its output are common ground output, long-term continuous operation, the system is to achieve active and reactive power measurement most economical product. Can accurately measure active balanced and unbalanced systems. Using cross-phase reactive power measurement: for frequency of 50 or 60Hz three-phase three-wire symmetrical balance measurement systems; reactive power measurement using the phase shift method: for single-phase, three-phase three-wire balancing frequency of 50 or 60Hz or not balance system, as well as three-phase four-wire system to measure, in the 40-600Hz range, not because of changes in signal frequency to produce additional error of its unique phase shift circuit ensures that the input signal. Main Specifications: S3-WRD-1T single-phase two-wire active / reactive power transducer S3-WRD-3 (3T) three-phase three-wire active / reactive power transducer S3-WRD-3AT phase four-wire active / reactive reactive power transducer cases: S3-WRD-3-555A4BY 0.2 级 three-phase three-wire active / reactive power transmitter input: 100V 5A 50 ± 5Hz Output: 4-12-20mA / 0- ± 866W / Var auxiliary power : AC220V need to measure the reverse power. (C) the product attributes Accuracy class: 0.5% RO Packaging: individually wrapped Installation: rail mounting Delivery: three days working conditions: temperature -10-55 ° C, relative humidity: less than or equal to 95% non-condensing