... loss with frequency 50Hz or 60Hz. features: new design, resonable construction, high overload, low power consumption, long life , high stablity. ... popular by customers. Type and meaning Type and specification Main technical parameters1,Meters conform to GB/T 15283 -1994 and ... ,current specifications etc.).4, Start-up: under the condition of the referenced voltage, reference frequency and cosΦ=1, and ...