Three Phase Unbalance Overvoltage Protection Relay With Fault Recording WDB-1Z

Three Phase UnbalanceOvervoltage Protection Relay With Fault Recording WDB-1Z

The function of the motor protector is to provide comprehensive protection and control of the motor. Overcurrent, undercurrent, phase failure, stall, short circuit, overvoltage, undervoltage, leakage current, three-phase unbalance, overheating, grounding, bearing wear, etc. occur in the motor. When the stator and rotor are eccentric, the aging of the winding can be alarmed or protected.

Electronic motor protectors have been developed from transistors to integrated circuits. Microprocessor chips have been developed into thick-mode circuits and are generally divided into phase-failure protection, comprehensive protection (multi-function protection), temperature protection, and intelligent protection. Such protectors have the advantages of energy saving, sensitive operation, high precision, shock and vibration resistance, good repeatability, complete protection functions, and low power consumption.

1. The motor protector (motor protector) is based on the principle of detecting the change of the line current (including taking, positive sequence, negative sequence, zero sequence and overcurrent), and can detect phase failure or overload signal. In addition to the phase-failure protection function, it also has an overload and stall protection function.

2. Intelligent protection: The motor protection device integrates protection, telemetry, communication, and remote control to protect the motor from phase failure, overload, short circuit, undervoltage, overvoltage, and leakage, and it also has current and voltage display. Control, software self-diagnosis, call self-recovery, self-start sequence, fault memory, self-trim and remote alarm, flashing alarm before and after current and voltage faults during fault display, RS485 communication interface configuration, and computer networking. At the same time, it can monitor and monitor the functions of 256 motors.

♦ Features

-- Separate structure,LED part panel mounted and CT part screw fixing

-- Built-in LED and keypad afford a precise,digital setting

-- Three-phase monitoring of short-circuit, locked-rotor,overcurrent, undercurrent, 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)

-- 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

-- Earth fault

♦ Typical Applications

• Pumps • Fans

• Blowers • 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.

Ginri company always adhere to "scientific management as the core, the user needs for the Centre to focus on product quality, meticulous service is sincere," the spirit of enterprise, please call us from all walks of life, thank you!