Phase Failure Three Phase Voltage Monitoring Relay Plug-In Mounting APR-3

The circuit of the motor phase failure protection device has six external terminals, where N is the neutral line of the power supply, A, B, and C are the phase A and B phases of the main circuit, and the two terminals IN and OUT are connected and controlled. Loop power supply in series. The inside of each external terminal is an inherent part and must correspond to each other. At the same time, the distance between the column and the column should be as large as possible to prevent short-circuiting between the connected columns. Therefore, these intrinsic components must be carefully connected, and if they are wrong, they may burn out the protection device.

The purpose of phase protection
In the operation of the three-phase motor, as long as one of the following conditions, such as contactor contacts burned and caused a phase contact failure, installation and maintenance causes a phase disconnected or three-phase power supply fuse of a phase fuse, will Causes the three-phase motor to run in phase. If it is found that it is not timely, it will also cause the burning of the motor and the damage of the equipment, which will affect the continuous production and cause some losses.
In order to ensure the safe operation of the motor, generally important motors are equipped with various phase failure protection devices to prevent the motor from being burned out in the event of a phase loss and to minimize unnecessary losses.

Voltage-based phase failure protection. The principle is to detect the absence of phase by detecting the supply voltage. In general, this kind of product often has a phase sequence protection function, which is called “voltage phase sequence relay”. The advantage is that it is easy to use. A "phase sequence relay" can protect multiple motors. The disadvantage is that it can only protect the power supply from the lack of phase. It can not protect the motor phase caused by poor contact of the AC contactor. In addition, for the dynamic phase loss (ie, the phase loss that occurs after the motor runs), the phase of the de-energized voltage is not zero due to the power generation of the motor, and is usually only slightly lower than the normal phase voltage. Higher false positive rate

Features: Three-phase monitoring of phase sequence, phase loss ,Powered by the measuring circuit, 1 C/O contact, LEDs for status indication

There have two Protective Functions Phase sequence, Phase loss

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

Approvals is CE • CCC

♦ 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!