Undervoltage Motor Protection Relay , Short Circuit Phase Loss Monitor Relay

Undervoltage Motor Protection Relay , short circuit Phase Loss Monitor Relay

The motor protector is now developed from the past mechanical type to electronic and intelligent, high sensitivity, high reliability, multi-function, easy debugging. Can directly display the motor current, voltage, temperature and other parameters, the type of fault protection at a glance, greatly facilitate the judgment of the fault, is conducive to the production site of the fault treatment and shorten the recovery of production time. In addition, according to the motor air gap magnetic field motor eccentricity detection technology makes the motor wear state online monitoring possible, through the curve shows the trend of changes in the value of the motor eccentricity, record changes in the value of the two years, early detection of bearing failure, Early detection, early processing, and avoiding brooming accidents.

The purpose of selecting the motor protection device can not only make the motor fully exert overload capacity, but also avoid damage, and it can also improve the reliability of the electric drive system and the continuity of production. In the case of meeting the protection requirements, the simplest protection device is first considered. When a simple protection device cannot meet the requirements, or when higher requirements are placed on the protection function and characteristics, it is considered that the application of a complicated protection device is required to achieve economical efficiency. The unity of reliability. The specific function selection should be based on a comprehensive consideration of the value of the motor itself, load conditions, the environment is good or bad, the importance of the motor, whether the exit operation has serious impact on the production system and other factors, and strive to achieve economical and reasonable.

♦ Features
Integrative structure or Separate structure, Built-in LED and keypad afford a precise,digital setting, Three-phase monitoring of short-circuit, locked-rotor,overcurrent, undervurrent, phase loss, phase unbalance,overvoltage,undervoltage, Earth fault (should couple with ZCT) ,Fault recording ,RS-485 communication port (optional) , 4-20 mA analog output (optional) unbalance,overvoltage,undervoltage , 2 C/O output contacts, one for trip,one for alert

♦ Protective Functions
-- Short-circuit -- Locked-rotor -- Overcurrent -- Undercurrent
-- Phase loss -- Phase unbalance -- Overvoltage -- Undervoltage
-- Ground fault

♦ Typical Applications
• Pumps • Fans • Blowers • Motors • Compressors

♦ Technical data