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Whatever customer seeks for,
Samhwa DSP is able to meet it
Product
DSP-SS1 Motor Protection Relay/2CT Based
Motor Protection Relay/2CT Based
Main Feature
■MCU based digital control : optimized protection
■ Compact size, Practical simple application
•Protection : - Over current / Under current, Phase Loss, Locked rotor
                        - Protection for Phase loss and Locked rotor is executed based on over current
•Possible to check actual current and trip state based on LED indication
■3 phase load protection through 2 CT
■To cover wide and precise current range for the protection
•10 Type : - Definite T-I : 0.3A∼12A(0.3~6A for external CT)
                   - Matched with external CT : 1~600A, secondary rating of external CT is 5A
•60 Type : Definite T-I : 2A∼60A
■LED Indication
        DIV                                                         LED Indication                                       Description
Control Power                                                POWER/RUN                                 Green LED is turned on
Motor operation                                             POWER/RUN                                     Red LED is turned on 
Over / Under current protection                     POWER/RUN           Red LED is flickered with 1sec interval during o-time
                                                                               TRIP                                        Yellow LED is turned on

                                                                 Trip Cause Indication
Cause                                                    POWER(Green)/RUN(Red)
Phase Loss                
L1 Red LED is turned on continuously by the pattern with 1sec(on)-1sec(off)-1sec(on)
L2 Red LED is turned on continuously by the pattern with 1sec(on)-0.5sec(off)-0.5sec(on)
L3 Red LED is turned on continuously by the pattern with 1sec(on)-0.5sec(off)-0.5sec(on)-0.5sec(off)-0.5sec(on)
Locked Rotor                    Trip Yellow LED is flickered by the pattern with 1sec(on)-1sec(off)-1sec(on)

■Convenient functional selection by DIP SW
•N type : trip output(95-96,97-98) is energized in case control power is loaded
•R type : trip output(95-96,97-98) is not energized in case control power is loaded
              - trip output is not responsed for selection of DIP SW in case normal operation is processed
•RP ON : able state to protect reverse phase protection      •RP OFF : disable state to protect reverse phase protection
■Reset after tripped
•Manual : press “RESET” SW
•Electrical : control power(A1-A2) off
                → possible to make remote control by power switch with remote distance
■Self-diagnostic function : “TEST” SW
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