Digital Motor Protection Relay

Installation: Panel Mounting Type

Model: DSP-3SD

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Protection

 

• Over/Under current

• Phase Loss

• Reverse Phase

• Locked Rotor

• Current Unbalance

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Auxiliary

• Password

• Self-diagnostics

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Main Features

• Access restricted to authorized operator: Password

• MCU based digital control : optimized protection

• Compact size,Practical simple applicationn
  * Protection : Over/Under current, Phase loss, Reverse Phase, Locked rotor, Current Unbalance
  * Indication : 3 phase current

• 3 phase load protection through 3 CT

• To cover wide and precise current range for the protection
  *10 Type
  ▸ Definite T-I: 0.5A∼10A , 0.5A~6A with external CT
  ▸ Inverse T-I: 0.5A~6A/800% to “oc”
  *60 Type
  ▸ Definite T-I: 5A∼60A
  ▸ Inverse T-I: 5A~15A/800% to “oc”
  *Wide protection current range with external CT : 1A∼600A

• Trip cause indication by number and/or characters : 4 digit window

• Rotated indication for 3 phase current with 3 sec interval
  *1P(single phase) :L1-L3 current
  *3P(three phase) :L1-L2-L3

• Convenient selection for 1P/3P in preset mode

• Manual/Electrical/Auto Reset : easy selection in preset mode flexible application
  to meet various system

• Stable operation under frequency variation from Inverter : 30Hz ∼ 400Hz

• Self-diagnostic test by one touch of "SET" key

• History, latest 8 trip events including self-diagnostic function

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