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Samhwa DSP is able to meet it
Product
DSP-3SS Motor Protection Relay/3CT Based
Motor Protection Relay/3CT Based
Main Feature
■ MCU based digital control : optimized protection
■ Compact size, Practical simple application
   •Protection : Over current, Reverse phase, Phase loss, Locked rotor
   •Possible to check actual current and trip state based on LED indication
■ 3 phase load protection through 3 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 Starting State                                       POWER/RUN           Red LED is flickered with 1sec interval during d-time
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)
Reverse Phase                    Red LED and green LED is turned on with 1sec interval alternatively
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
■ 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
Catalog
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Cad
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Certification
Ordercode
  • 3SS.png
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