Ankerui motor protector has the functions of overload inverse time limit, overload definite time limit, grounding, starting timeout, leakage, underload, phase failure, locked rotor, etc

Encore Wang Chong

Abstract ： There are a large number of low-voltage motor equipment that need perfect protection and centralized control in the coal industry . This paper analyzes the production status and development trend of China's coal industry , The necessity and inevitability of using motor protector in coal industry are introduced .

key word ： coal ; Motor protection ; Motor protector

0 summary

In the coal industry , There are many low-voltage motors 、 Wide distribution , It is an important mechanical power source for production . Coal enterprises in order to achieve automated production , Improve production efficiency , Realize telemetering for motor equipment 、 Telesignaling 、 remote control 、 Telecontrol 、 The demand for fault diagnosis and centralized control is very strong . Compared with the traditional thermal relay to protect the motor , Intelligent motor protector is protecting 、 control 、 Operation and maintenance, communication and other aspects are more suitable for the current informatization 、 automation 、 Integrated development of the coal industry .

1 Background introduction

Coal is China's basic energy , It accounts for nearly... In the composition of primary energy 7 become . In recent years , The domestic economy has developed steadily , China's coal industry will continue to maintain a vigorous development trend for quite a long time , The development prospect of China's coal industry is still broad . however , While China's coal industry has made great achievements , Some serious problems also need to be solved , among “ Backward production capacity , The overall technical level is low ” and “ The situation of work safety is grim ” These two problems are particularly prominent .

At present , The overall production technology of the coal industry is in urgent need of iterative upgrading , Modern production technology requires a high degree of automation , It puts forward higher requirements for the reliability and stability of motor equipment . meanwhile , There are many flammable and explosive places in the coal industry , Once an accident happens, the consequences are unimaginable . Based on these two basic situations , The thermal relay, which has been used in motor circuit by coal enterprises before, can no longer meet the protection requirements under the current development form of coal industry 、 Control demand , It has rich measurement functions 、 Protection function 、 Control function 、 Intelligent motor protectors for operation and maintenance records and bus communication are gradually replaced .

 

2 functional requirement

Coal washing industry , The main low voltage motor loads are ： Sieves , Cyclone , Shallow trough , Jig , Centrifuge , The flotation machine , Filter press , pump , pressure filter , Flotation column 、 Coal plough 、 Crusher and other equipment .

In the coal mine project , Generally, the motor protector is required to have overload 、 The current is unbalanced 、 Phase failure 、 Over and under voltage and other protection functions , Voltage required 、 Current measurement to adapt to new IMCC Application , Communication function is required to realize centralized monitoring and control in the background . stay AC 660V In the system , Most of them need to be equipped with leakage protection function . Besides , For some downhole motor loads , It also needs to be matched with horse insurance “ Anti shake electricity ” function , Prevent the motor from shutting down due to voltage drop when unattended , Cause unnecessary damage .

therefore , In the coal industry , It is recommended to use ankerui ARD3M-K1-XX/SU L-60L1 Motor protector , At the same time, according to the field bus communication requirements , Optional Profibus（ Code name CP）、Profinet（ Code name PNET）、Modbus_TCP（ Code name MCE） Wait for the communication protocol .  

3 Product introduction

3.1 Product overview

ARD3M Intelligent motor protector （ Hereinafter referred to as protector ）, Using single chip microcomputer technology , Applicable to rated voltage to 660V Low voltage motor circuit , Set protection 、 measurement 、 control 、 Communications 、 Integration of operation and maintenance . Its perfect protection function ensures the safe operation of the motor , With logic programmable function , It can meet a variety of control modes . Different communication modules can be selected to meet the needs of field communication .

The product adopts split structure , By subject 、 Display unit 、 Transformer and optional communication module , It can adapt to the installation of various cabinets . 

3.2 Technical parameters

3.3 Product features

■   The type of auxiliary power supply is optional ,AC220V The power supply module supports the power supply range AC85-265V/DC100-300V,AC380V The power supply module supports the power supply range AC/DC100-415V.

■   Support fundamental and full wave power parameter measurement （U、I、P、Q、S、PF、F、EP、EQ）, Voltage and current imbalance , voltage 、 Current positive sequence 、 negative sequence 、 Zero sequence component , Three phase voltage phase angle , Residual current , voltage 、 electric current 2-63 Sub harmonic measurement , Sub harmonic content and total harmonic distortion .

■   The protection function includes overload inverse time limit 、 Overload time limit 、 Grounding 、 Start timeout 、 Electric leakage 、 Underload 、 Phase failure 、 Locked rotor 、 Blocking 、 A short circuit 、 overflow 、 out-off-balance ( electric current 、 voltage )、 Overpower 、 Under power 、 Overvoltage 、 Undervoltage 、 Phase sequence 、 temperature 、tE Time 、 External fault 、 The number of starts is limited 、 Run time alarm 、 Number of failures and alarms .

■  10 Way programmable DI Input , The default is built-in DC24V Power Supply , External active wet contact can also be selected （ See model selection table for details ）.

■  6 Way programmable DO Output , Meet the requirements of direct starting , star — Delta start , Autotransformer starting , And so on , The remote control of the motor by the master station can be realized through the communication bus “ rise / stop ”.

■   Optional anti shake function ： Support immediate restart after power shaking 、 Loss of pressure restart .

■   Standard configuration 2 road MODBUS_RTU Communications , Yes PROFIBUS DPV1、 Ethernet 、PROFINET Communication module optional .

■   Optional 2 road DC4-20mA Analog output interface , And DCS The system is connected , It can realize the monitoring of field equipment .

■   Have fault records 、 Start up record 、 Parking record 、DI All kinds of event records such as displacement record and restart record , You can view a number of motor operation and maintenance information , At the same time, motor operation can be recorded 1-5 Hour operation record .

■   The display interface supports / Display in English .

■   Support U Export waveform record and event record data from disk , You can use EXCEL Open the export event log file .

■   Optional color LCD display can be added WIFI function , Connect the... Via your mobile phone or computer WIFI see 、 Set relevant data of motor protector .

Typical performance

 

4 Conclusion   

At present, the coal industry is in the process of industrial upgrading 、 The critical period of resource integration , A large number of renovation projects are in urgent need of functional perfection 、 Reliable motor protector . This article introduces ancorey ARD3M Series motor protector , Compared with previous generation products , Protecting 、 measurement 、 The operation and maintenance, control and other dimensions have been greatly upgraded , To improve the stability and reliability of production and operation of coal enterprises   Provided security .