เครื่องทดสอบลําดับเฟส ลำดับเฟสและพวงมาลัยมอเตอร์ UNI-T UT261A phase sequence tester lack phase meter motor rotation indicator AC 40 700V 90 600V UT261B Phase sequence and motor steering

UT261 series is used for determining 3-phase power phase sequence, missing phase indication, and motor phase rotation (UT261B). UT261A and UT261B can measure AC voltage of 40~700V and 90~600V respectively. These devices can operate in frequency range of 15~400Hz. UT261 are durable devices which can withstand impact from 2 meter' s height. Test leads with protective tubing are included in optional accessories. 1. Phase sequence indication 2. Missing phase indication 3. Motor rotation indication Technical Data Specifications Range UT261A UT261B AC voltage (V) 90V~600V √ 40V~690V √ Frequency (Hz) 15Hz~400Hz √ √ Working current (A) ＜1mA <3mA Features Phase sequence indication LCD LED Missing phase indication LCD LED Motor rotation indication LED General Characterisitics Power UT261A: No battery required; UT261B: 9V battery (6F22) (Battery Not Include）