The intelligent microcomputer monitoring motor protector is suitable for AC380V and AC660V low-voltage systems, serving as a new generation of intelligent comprehensive device for the protection, monitoring, and control of low-voltage asynchronous motors and increased safety motors. In addition to advanced motor protection and monitoring functions, it also provides important information such as equipment operation and tripping records, as well as rated parameters. It adopts a fieldbus structure, which brings great convenience to modern equipment management; Widely used in industries such as petroleum, chemical, power, metallurgy, coal, light industry, textile, etc.
Compliant with standards: GB3836.3-2000, GB14048.4-2003, IEC255

characteristic
The 'tE time protection' complies with the national standard for overload protection of increased safety explosion-proof motors (GB3836.3-2000)
● AC sampling, measuring three-phase currents A, B, C and control circuit voltage
On site display of motor operation status, save three records of motor fault tripping
One protection output, two custom relay outputs, one 4-20mA current output, and one RS485 interface
The split type motor protector can choose a DI input module to control forward and reverse starting, self starting, and switch control unit
● Large screen LED or high-definition wide temperature LCD display with background light, real-time display following the operation status of the motor and user requirements
The functions of three-phase current imbalance, phase failure, overvoltage, undervoltage, self starting, etc. can be taken or omitted by users
● Overcurrent protection setting during startup, which can be adjusted multiple times according to the motor condition
The analog output fine-tuning function can eliminate the error accuracy caused by line attenuation
● 2-channel programmable relay J2 J3 has up to 5 output settings. Meet different on-site protection situations
Using E2PROM storage technology to achieve parameter electrical setting, the set parameters are still saved after power failure and do not need to be set again
Adopting RS485 communication bus, it can be widely used in various monitoring systems as an intelligent monitoring unit with motor protection and control
One machine is versatile and can replace ammeters, voltmeters, thermal relays, current transformers, time relays, and leakage relays

major function

Protection functions: overcurrent, locked rotor, phase failure, three-phase current imbalance, overvoltage, undervoltage, short circuit, leakage (optional) and other fault protection

Measurement function: Measurement and display of three-phase current and control circuit voltage

General functions: increased safety motor protection, three-phase asynchronous motor protection, feeder protection, all three types of protection devices are universal

Communication function: Communicate with the upper system through the RS485 interface of this protector. The bus interface supports functions such as parameter setting, control, and monitoring, and supports Modbus communication protocol. Generally, RS485 bus interface is used for physical connection, with the upper computer or PLC equipment as the main station and this protector as the substation.

Current output: 4-20mA current output, the corresponding current value for 20mA can be set.

Starting methods: direct starting, forward and reverse starting, Y - △ starting, self coupling voltage reduction starting, remote self starting