Over Under Voltage Motor Protection Relay With Digital Setting Locked Rotor

The motor is easier to burn the winding than in the past because of the continuous development of the insulation technology. In the design of the motor, both the increase of output and the reduction of the volume are required, so that the heat capacity of the new type of motor becomes smaller and smaller, and the overload capacity becomes weaker and weaker; Due to the increase in the degree of automation of production, the motor is often required to operate in frequent starting, braking, reversing, and changing loads, which imposes higher requirements on the motor protection device. In addition, the application of the motor is wider. Often working in harsh environments, such as humid, high temperature, dust, corrosion and other occasions. Coupled with the non-standard motor manufacturing, equipment management oversight. All this has caused today's motors to be more easily damaged than in the past, especially overloads, short circuits, phase loss, brooms, etc.

The traditional protection device has a poor protection effect. It is the traditional motor protection device that mainly includes fuses and thermal relays. Fuse is mainly used for short-circuit protection. The selection of fuse current needs to consider the starting current of the motor. Therefore, using a fuse alone to protect the motor is not desirable. Thermal relay is the most widely used motor overload protection device, but the thermal relay has low sensitivity, large error, poor stability and unreliable protection. This is precisely the fact that, although many devices have thermal relays installed, the phenomenon of motor damage that affects normal production still prevails. The traditional protection device has not yet been able to realize the motor wear monitoring, rotor eccentric monitoring products.

♦ 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
Protection the short-circuit,Locked-rotor , Overcurrent ,Undercurrent ,Phase loss .Phase unbalance ,Phase unbalance ,Overvoltage ,Undervoltage ,Ground fault,In general used for Pump/fans/blows/motors/compressors
♦ Technical data

GINRI POWER AUTOMATION CO.,LTD. is a professional production voltage phase sequence protection device (and name: three-phase power monitor), and PLC output zoom Board, and smart type motor integrated protection device, and industrial parts manufacturers, technology development team in elevator industry, and refrigeration industry, and crane industry, environmental equipment, mechanical NC industry and the industrial following insurance industry, field has more than 10 years practice experience, has development out variety price economic and function excellent of products. CQC product quality system by China Quality Centre (3C) certification and CE certification, products in the manufacturing process in strict accordance with the ISO9001 quality assurance system requirements and professional technical and service support.

Voltage phase-sequence protection for many years (equipment, refrigeration equipment, crane (passenger and goods) elevators, control of DC power supply system (Cabinet) screens, precision air conditioners, room air conditioners, electric hoist, boiler equipment, laser equipment, parking equipment, cranes, compressors) and so on using the run.

PLC output amplifiers (environmental protection equipment, numerical control and automation equipment, automobile, plastic machinery, hydraulic machinery, ceramic foam machinery, woodworking machinery, machinery) and so on using the run.

Years of integrated Intelligent motor protector (power plants, paper mills, steel mills, aluminium plants, cement plants, sewage treatment plants, coal preparation plants, refineries, petrochemical plants), and so on using the run.

Product quality is stable and safe, reliable, and earned a solid market position in the market and a high reputation in the industry, received unanimous recognition and praise of our customers.

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