Undervoltage Phase Voltage Monitoring Relay 3 Phase-rotation and phase loss monitoring relay , SPDT 380V

Reliance on the disappearance of a current in a phase conductor of a polyphase circuit to disconnect a protected device or rely on the loss of one or more phases of a polyphase system to prevent a protection device that applies power to a protected device, also known as a protection device. Phase protector, phase loss protector.

This type of detection voltage can also be called three-phase power supply monitor, phase sequence protector, over voltage protection device, etc.) Mainly used for AC 50/60Hz, rated voltage below 460V, industrial three-phase 220V, 380V, 440V , 460V and other voltage levels of various fault detection, the three-phase input power supply voltage is too high, voltage is too low, lack of phase, phase failure, reverse phase (phase sequence), three-phase voltage imbalance, etc. to provide protection relay products Widely used in distribution boxes, central air-conditioning units, electric control boxes, power distribution cabinets, cranes, etc., such as central air-conditioning compressor protection, power monitoring of various elevators, pumps, oil pumps against phase loss, reverse phase protection, etc. An indispensable protective product that maintains the normal working voltage of the equipment during operation.

-- Built-in LCD and keypad afford a precise,digital setting-- Three-phase monitoring of phase sequence, phase loss, over- and undervoltage and phase unbalance-- Adjustable over- and undervoltage, phase unbalance threshold-- Independent adjustable delay time for overvoltage, undervoltage, phase unbalance-- Powered by the measuring circuit-- 1 NO & 1NC contacts-- Faulure recording

♦ Protective Functions

-- Phase sequence

-- Phase loss

-- Phase unbalance

-- Overvoltage

-- Undervoltage

Applications Pumps / Fans Blowers / Motors / Compressors ,have the CE CCC Certain ,make sure every product Quality ,Meet industry standards

♦ Technical data