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Electronic Motor Protection Relay
Model Name
IMC-III
Series
Low Voltage (Device)
Data
Catalog(Electric Product)-LS ELECTRIC-Low Voltage (Device)-Electronic Motor Protection Relay (IMC-III)
Manufacturer information
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LS ELECTRIC

Smart Power Solution, Low Voltage, Smart Automation Solution, PLC, Smart Railway Solution, Signaling System and more

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Manufacturer
LS ELECTRIC
Product Type
Machine
Brand
-
SKU
132992
Product Name
Electronic Motor Protection Relay
Model Name
IMC-III
Size
-
Weight
-
Product Details

IMC-III

Programmable intelligent motor protection device applicable to various motor starting methods.

 

Features

Protection Function

ㆍVarious protection factor for motor (8 protection factors)

ㆍApplicable to invertor circuits

ㆍInstantaneous power failure compensation and restart

ㆍDigital meter function

 

Convenience Function

ㆍEase of installation

ㆍWide current range

ㆍFunction to save fault value and cause

ㆍSelf-diagnosis and sequence monitoring

ㆍTotal operating time and operating time setting

 

Communication Function

ㆍVarious communication compatibilities (RS485 modbus and 4~20mA output)

 

Protection factor

Rating Operating condition Time Remark
Over
current
Inverse Over 110% setting current 1~60s/1s 600% standard operating time
Definite time Over 105% setting current 1~60s/1s Delay time 1~200s
Phase fault Over 70% current phase unbalance Within 1.5s Phase fault rate = Maximum Phase Current - Minimum Phase Current / Maximum Phase Current ×100%
Phase unbalance Current phase unbalance 30~50% Within 5s
Reverse phase Reverse the current phase Within 0.1s Over 110% minimum ratings
Under current Rating current 30~70% Within 3s  
Holding Stall Rating current 150~300% Within 5s Detection after over current setting time
Locked rotor Rating current 200~700% Within 0.5s
Ground fault The current rating 0.1~2.5A setting 0.05~1.0s Ground fault delay operation
Pre-alarm Over 120% setting value   Bar-LED blinking

 

Sequence

Rating Contents
Operating type Direct operation Non-reversible direct operation
Y-▵ operation Y operation time 1~120s/1s
Y-▵ switching time 0.05, 0.1, 0.2s
Forward / Reverse operating Reversible direct operation
Reactor Reactor time 1~120s/1s
Inverter Inverter delayed time ON 1sec/0.1sec
Instantaneous
under voltage
compensation
Compensation time OFF 1~10s /1s
Re-operation delay time 0~300s /1s
Under voltage detection (Rating control voltage × 65%) ± 10%
Re-operation delay time (Rating control voltage × 75%) ± 10%
Remote control Local LOP(Local Operation Panel)
MCC Motor Control Center
Auto PLC, DDC, DCS auto operation
Remote Modbus/RS-485 communication

 

Specification

* D-Time(Delay time) : It is delay time for IMC-IIIa start during motor start time

* O-time (Operating delay time) : When over current generates more then setting current, that makes it delayed until IMC-IIIa operated.

LS ELECTRIC
Smart Power Solution, Low Voltage, Smart Automation Solution, PLC, Smart Railway Solution, Signaling System and more
We open up a brighter future through efficient and convenient energy solutions. We at LS ELECTRIC are leading the power system and automation sectors of the nation’s industry, concentrating all our effort and energy on ‘product quality’ and ‘innovative ideas.’ Under our motto Futuring Smart Energy, we are striving to stay ahead of the competition with our world-class quality and technological prowess, even in this new era of Smart Energy created by the convergence of power systems and automation. In the power systems field we are doing our utmost to expand our share of the global market, particularly in China, the Middle East, and Southeast Asia, while in the automation field we are making a foray into global markets by securing world-class technologies. Furthermore, we have secured a solid position in the smart energy sector [e.g. smart grid, micro grid, energy storage systems (ESS), photovoltaic energy] as a representative company of Korea, and have become the first Korean enterprise to make inroads into the global high-voltage direct current (HVDC) market. Naturally, we have been selected as one of the Top 100 Global Innovative Businesses by Clarivate Analytics for ten consecutive years as a result of our remarkable achievements. We will continue to achieve better results as a business synonymous with first-rate quality and excellent R&D capability, a business that provides total solutions to customers, a business to be reckoned with, and a business that knows how to grow together with its customers.  
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