--> Product :: SAMHWA ENG
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Whatever customer seeks for,
Samhwa DSP is able to meet it
Product
DSP-POM
Main Feature
  • Panel Flush Mounting Type
  • Access restricted to authorized operator : Password
  • One Model is able to meet three kind of independent function
    • Voltage relay
    • Current relay
    • Power[Load/KW,Current]relay
  • Compact size,Multi function
    • Protection :Over/Under Voltage/Over current/Under current/Phase loss/Reverse phase/Locked rotor/Current unbalance,Ground fault
    • Indication :Voltage, Load[KW]/Current,KWH, Earth current, AWT[Accumulated Working Time], Power Factor, Load Factor
  • To show a trip cause and operational information in a character and/or a number : 5 Digit Window
  • To indicate a necessasary information in every 3 sec: V,KW/Curr,KWH,Ec,AWT,Pf,Lf(Load factor)
  • Convenient installation of ZCT to sense a zero-phase current for GF protection
    • Basic type : to use external ZCT(200mA/1.5mA)
    • Optional type : to use embedded ZCT (not suitable for external CT application)
  • High sensitive level and wide range for ground fault protection :30mA∼5A/Zero-phase sequence current
  • Alarm for disconnection with ZCT
  • Alarm before Tripping by over current
  • to check and/or to change preset value of each mode during the operation
    • Possible to check :press "SET" key
    • Possible to check and to change : firstly make "oPSEt" mode "on",then press "SET" key
  • procedure after pressing "SET" key is same manner with usual preset job
  • Various way to reset after trip: Manual,Electrical or Automatic /to response flexibly for applied sequence system
  • Self-diagonostic test by one touch for "CLR" key
  • History,Latest 8 trip events
Technical Specification
  • Current rating
    • 10 Type : 0.5A∼10A(:0.37[KW] ∼7.4[KW]/3P 480V)/ 0.5A~6A with external CT
    • 70 Type : 5A ∼70A(3.7[KW] ∼ 52[KW]/3P 480V)
    • External CT : 1A ∼ 3600A
  • Exclusive operation as voltage relay by direct voltage detection
    • 110V : 40~180V , 220V : 150V∼290V
    • 380V : 310V∼450V , 440V : 370V∼510V ,480V : 410V∼550V
  • Operation Time
    • Starting trip delay time(dt) : 1 ~ 300sec /Definite T-I
    • Over/Under voltage trip delay time :1~30sec
    • Over current trip delay time(ot)
      • definite T-I:1~60sec
      • Inverse :1~30Class
      • Inverse:1~30Class /800% to "oc": 10 type/0.5~6A,70 type:5A~40A
    • Under current trip delay time : 1~30sec
    • Phase loss trip delay time(PLc) : 1~5sec
    • Reverse phase trip delay time : within 0.5sec
    • Ground fault trip delay time : Edt/1~25sec,Eot/1~30sec
    • current unbalance trip delay time : 8sec
    • locked rotor trip delay time : dt+0.1sec
  • Allowable tollerance
    • Current : C≤2A : 0.2A, C>2A : ±5%
    • Time : t≤2sec : ±0.2sec, t>2sec : ±10%
    • Control power : 24VDC (Optional Type)
  • Trip output
    • Main : 95-96-98 : 1c(1-SPDT), 250VAC/3A, 30VDC/1A, Resistive
    • Aux:05-06-08 : 1c(1-SPDT),3A/Resistive(possible to alarm output one of Ec/Ec-tb/AL/uc/Shoc
  • Application environment
    • Operation : -25℃ ~ +70℃
    • Storage : -40℃ ~ +80℃
    • Relative humidity : 30∼85%, non-condensing
  • Stable operation under frequency variation from Inverter : 30Hz ∼ 400Hz  ,avg ±5% 
  • Screw Torque : Max 0.6N.m
  • Insulation Resistence / IEC-60255-5 : circuit-case, 10Mohm , 500VDC
  • High Voltage Withstand Test : IEC-60255-5
    • circuit-case : AC2000V, 60Hz, 1min
    • contact-contact : AC1000V, 60Hz, 1min
  • Lightning Impulse Voltage Withstand Test : IEC-60255-5
    • Circuit-Ground, Circuit-Circuit : 1.2/50uS, 5KV
    • Control Circuits : 1.2/50uS, 5KV
  • 1MHz Burst Immunity Test / IEC 61000-4-18 : 2.5KV, Positive / Negative under 2sec
  • Electrostatic Discharge : IEC-61000-4-2
    • Air : Level 3, 8KV
    • Contact : Level 13, 6KV
  • Radiated Electromagnetic Field Disturbance / IEC-61000-4-3 : Level 3, 10V/m
  • Electric Fast Transient Burst : IEC-61000-4-4
    • power,relay output : Level 4, 4KV
  • Surge Immunity test : IEC-61000-4-5
    • relay output : 1.2×50uS, 2KV(0°, 90°, 180°, 270°)
  • Conducted Disturbence Test / IEC-61000-4-6 : 10V, Level 3
  • Control Voltage : 100~240VAC/Standard, 24VDC/Optional
  • Power consumption : 4W Max
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