3 Phase 4 Wire Three Phase Voltage Monitoring Relay Over Under Voltage Protection

♦ Features
-- Compact modular size
-- Neutral loss
-- Three-phase Four-wire monitoring of phase sequence, phase loss, over- and undervoltage and phase unbalance
-- Powered by the measuring circuit
-- 1CO & 1NC contacts
-- 5 LEDs for status indication

♦ Functions
Protection the Phase sequence,Phase Loss,Phase unbalance, Over/Under Voltage and NEUTRAL Loss to protect the equipment(Pump ,Elevator Control Pannel,Blowers,Pumps) from broken


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

♦ Approvals
• CE • CCC

♦ Technical data

What is 3 Phase 4 Wire?

Three-phase four-wire system, in the low-voltage distribution network, the transmission line generally adopts three-phase four-wire system, three of which represent A, B, C three-phase, and the other is neutral N or PEN (if the loop power supply) When the neutral point of the side is grounded, the neutral line is also called the zero line (old-fashioned name, which should be gradually avoided, renamed PEN. If it is not grounded, the neutral line cannot be called the neutral line in a strict sense).
In the single-phase transmission line entering the user, there are two lines, one is called the phase line L, and the other is called the neutral line N. The middle line normally passes the current to form the current in the single-phase line. In the system, when the three-phase is balanced, the neutral line (zero line) is currentless, so it is called three-phase four-wire system; in the 380V low-voltage distribution network, in order to obtain the 220V phase voltage from the 380V line voltage, the N line is set. Some occasions can also be used for zero-sequence current detection for monitoring the three-phase power balance.

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!