ETCR9620 ETCR9620B Wireless Low-voltage Transformer Ratio Tester     Functions:       Test the leakage current, current, transformation ratio, ratio error, angle error, phase, polarity and phase sequence of the primary and secondary circuit of the current transformer in the 380V/220V distribution system.                    Features:       1.Current clamp adopts high performance Permalloy core, magnetic shield and CT digital integrated technology, with strong anti-interference ability, high accuracy for testing.  2.The primary flexible current clamp is especially suitable for small space and flat cable dense places, more convenient and fast for testing.  3.ETCR9620B primary current clamp adopts wireless transmission, more convenient for testing.  4.Data hold function, data storage function.            Technical Specifications:                                                 Model         ETCR9620                                                             ETCR9620B                                          Primary Current Clamp TestAccuracy                                     Range:0.0A~ 3000A; Resolution: 0.1A; Accuracy: ±1%FS (23& 8451; ±3& 8451;& 65292;below70%RH& 65292;the conductor should be in the center of the clamp)                                     Range:0.0A~ 3000A; Resolution: 0.1A; Accuracy: ±1%FS (23& 8451; ±3& 8451;& 65292;below70%RH& 65292;the conductor should be in the center of the clamp)                                                   Secondary Current Clamp TestAccuracy                                     Range: 0.00mA~ 5A; Resolution: 0.01mA; Accuracy: ±0.5%FS                                     Range: 0.00mA~ 5A; Resolution: 0.01mA; Accuracy: ±0.