EOCR MANUFACTURER IN Dhanbad

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We at Concord offer a comprehensive range of Motor Protection Relays to protect your motor from burn out due to frequent and common problems including over loading, single phasing etc. The EOCR are electronic solid state or MCU (Microprocessor based Motor Protection Relays with multiple protections including over loading. Single phasing, reverse phase, phase unbalanced, locked rotor, ground fault, short circuit and undercurrent to protect your motors from premature failures even in extreme circumstances. The EOCR-operates on the basis of current sending principle with inbuilt current transformers which not only sense the current but also protects the motor. With a provision for independent adjustment of D- Time ( Starting Delay Time) and O- Time ( Operating Time) with definite and /or inverse type characteristics with wide current adjustment range. The EOCR is well equipped to guard your motor from failures. The EOCR is widely used and accepted all over by major users in all segments of the industry including automobile, Steel, Chemical, Petrochemical, Machinery and Paper etc.

Comparison Table Features
Traditional Bimetal Over Load Relay and EOCR Electronic motor Protection Relay
Feature Thermal Bimetal Over Load Relay EOCR-Electronic Over Load Relay
Operating Principle Bimetal curve by heat Electronic Circuit and MCU
Intelligent Controls No Yes
Phase Loss Protection No Yes
Phase Loss Protection No Yes
Phase Reversal Protection No Yes
Locked Rotor Protection No Yes
Under Current Protection No Yes (ECR and EUCR)
Role of Ammeter Required of Settings Not required- Can be done by LED or digital Display
No Volt Relay Required Not Required- in built
Current Adjustment Range Very small Range Wide Setting Range
Inventory Large Minimised
Protection during frequent Starting and stopping Nuisance tripping Complete protection & no nuisance trippings
Trip Cause Indication Not Possible Yes (MCU Models)
Load Alert function Not Possible Yes (MCU Models with Display)
Sensitivity to ambient Yes No effect on the settings
Remote/Electrical Reset Not Possible Yes
Test Function No Yes
Power Consumption 6-7 watt 1-1.5 Watt

Application of EOCR

The high versatility and unique design features of the EOCR make posssible the use of EOCR over a wide spectrum of applications for protection of all types of LT motors. Listed below are only few of the examples :

  • Fractional Horse Power Motors

  • Pumps (Submersibles and others)

  • I.D. Fans

  • Squirrel Cage Motors

  • Slip Ring Motors



Salient Features



  • SOLID STATE MODELS

  • Multiple Protection Function

  • Wide Current Adjustment Range (10:1 )

  • Ammeter Function

  • Trip Indication LED

  • High Accuracy

  • Manual/Instantaneous Reset

  • Electrical Remote Rese

  • Test Function

  • Ambient Insensitive

  • Low Energy Consumption

  • Fail-safe Operation (No Volt Release)

  • Compact Design

  • MCU Based

  • Multiple Protection Function

  • Wide Current Adjustment Range (10:1 )

  • Ammeter Function & Trip Indication

  • Easy Troubleshooting & Run Monitor

  • Manual/Instantaneous, Electrical Remote Reset

  • Test Function

  • Ambient Insensitive

  • Fail-safe Operation


Service Area




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