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Htd301 Distribution Terminal Unit (DTU)
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- Product Details
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Key Features:
● Mainly used in switching station, RMU, small substation.
● Three-remote functions, fault recording, fault detection and isolation functions.
● Three-stage overcurrent protection, zero-sequence current protection, loss of voltage protection, disconnection protection, reclosing, and reset functions.
● Intelligent power supply design, using AC three-phase power supply. In case of power supply line fails (one phase loss in three-phase, three-wire power supply), the AC power supply can still support normal terminal operation. Seam-less switching between AC power supply and backup power supply is supported.
● Communication function: wireless GPRS, RS-232/RS-485 serial ports, Ethernet interface, supporting ModBus,IEC104 and other communi-cation protocols.
Technical Parameters:No. Item Unit Technical parameters 1 Power Supply Working Voltage V AC220V±20% Voltage Frequency Hz 50±5% 2 Remote Measurement A.C. voltage Nominal Sampling Voltage V 100V Zero sequence voltage Nominal Sampling Voltage V 100V Three-phase current Nominal Sampling Current A 5A/1A Rated frequency Hz 45～55 3 Remote Control Contact capacity AC 250V/5A or DC 110/0.5A pure resistive load. Input working voltage V AC220V Output Voltage V DC48V 4 Power Consumption Power consumption of the whole equipment VA ≤50VA 5 Backup Power Supply Backup power supply rated voltage DC48V;
maintenance-free valve-regulated lead-acid batteries, battery life is no less than 3 years.
Htd301 Distribution Terminal Unit (DTU)
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