Digital Motor Protection Relays (3CT-based)

Brand: Samwha


Digital Motor Protection Relay
Installation: Panel Mounting Type
Model: DSP-3SD

• Over/Under current
• Phase Loss
• Reverse Phase
• Locked Rotor
• Current Unbalance

• 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