Communication start of cold storage motor protector

Thank you for choosing Nanjing SwoPDM-810MRC3-DSC2-A-MT100 motor protectorSwo 189 pottery 5244 worker 6334 is at your service.The company's main products include motor protectors, AC power meters, PD194 harmonic meters, multifunctional harmonic meters, and power quality detectors. Nanjing Swo Instrument is a talent and technology enterprise that focuses on providing systematic solutions for power monitoring, power quality improvement, and electrical safety for smart grid users.

1、 Product Overview

Nanjing SwoPDM-810MRC3-DSC2-A-MT100 motor protectorUsing microcontroller technology, it has the characteristics of stable and reliable operation, digitization, intelligence, networking, etc. The protector protects against starting timeout, overload, phase failure, imbalance, underload, grounding/leakage, blocking, short circuit, external faults, etc. during the operation of the motor. It also has SOE fault time accumulation function, which is convenient for county maintenance personnel to find the cause. It has RS485 remote communication interface, DC4-20mA analog output, and is easy to form a network system with PLC, PC, etc. to achieve remote monitoring of motor operation.

2、 Functional Features

1. The auxiliary power supply supports AC/DC power supply (AC220V, DC220V/110V).

2. Switching input (DI) supports dry or wet node input (optional AC or DC external power supply).

3. Switching output (DO) supports AC or DC loads, and the "control" and "protection" outputs are independent.

|The signal relay output is used for device self-test or fault alarm output.

4. The measurement function is divided into basic current parameter measurement and optional parameter (voltage, residual current) measurement.

5. Support multiple motor control logics (direct start, variable frequency start, soft start, star delta start, bidirectional start, etc.).

6. The protection functions are divided into basic protection (overload, blockage, locked rotor, etc.) and optional protection (residual current, voltage, underpower, tE time, etc.)

3、 Installation matters

(1) When a protective device is equipped with a transformer, the accuracy and specified current ratio of the transformer must comply with the current setting range of the protective device. The cross-sectional area of the secondary current wire of the transformer must meet the requirements of the secondary currentbigValue demand.

(2) When the output (relay contact capacity) of the protector cannot meet the required capacity of the AC contactor in the control circuit, an intermediate relay must be added for transitional control.

(3) The principle for setting the current value of the protector is equal to the rated current value of the motor.

(4) The fixed position of the protector should be as easy as possible for installation, debugging, and observation.

(5) The use and management of protective devices must be the responsibility of professionals, and unrelated personnel are not allowed to operate or use them at will.

4、 The Status of Domestic Motor Protectors (Motor Protectors)

Electronic motor protectors have evolved from transistors to integrated circuits and now to thick mold circuits with microprocessor chips. They are generally divided into phase failure protection, comprehensive protection (multifunctional protection), temperature protection, and intelligent protection in terms of functionality. This type of protector has the advantages of energy saving, sensitive action, high accuracy, shock and vibration resistance, good repeatability, complete protection functions, and low power consumption.

1. Motor protector (motor protector) is based on the principle of detecting changes in line current (including positive sequence, negative sequence, zero sequence, and overcurrent), and can detect phase failure or overload signals. In addition to phase failure protection, it also has overload and stall protection functions.

2. Intelligent protection: A motor protection device that integrates protection, telemetry, communication, and remote control. It provides protection against faults such as phase failure, overload, short circuit, undervoltage, overvoltage, and leakage in the motor. It also has current and voltage display, time control, software self diagnosis, incoming call self recovery, self starting sequence, fault memory, self locking, and remote alarm. It displays the current and voltage faults before and after the fault with flashing codes, and is equipped with RS485 communication interface to achieve computer networking. At the same time, it can monitor and monitor the operation of 256 electric motors and other functions.

PDM-810MRC3-DSC2-A-MT100 motor protector - produced and sold by Nanjing Swo Electric Co., Ltd!