Huawei DHSU1079-CT Quick Manual
Huawei DHSU1079-CT Quick Manual

Huawei DHSU1079-CT Quick Manual

250 a/50 ma smart power sensor

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DHSU1079-CT 250 A/50 mA Smart Power Sensor
Quick Guide
Issue: 01
Date: 2024-01-30

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Summary of Contents for Huawei DHSU1079-CT

  • Page 1 DHSU1079-CT 250 A/50 mA Smart Power Sensor Quick Guide Issue: 01 Date: 2024-01-30...
  • Page 2 Overview Dimensions DHSU1079-CT 250 A/50 mA: with three 250 A/50 mA current transformers (CTs) The dimensional tolerance is ± 1 mm. Appearance Specifications on the front panel Nameplate Copyright © Huawei Digital Power Technologies Co., Ltd. 2024. All rights reserved.
  • Page 3: Port Definition

    Key Specifications Category DHSU1079-CT 250 A/50 mA Nominal voltage and frequency 230/400 V AC, 50/60 Hz Current measurement range 0–250 A Class 1 (tolerance: ± 1%) Electricity metering accuracy Earthing system Three-phase four-wire or three-phase three-wire 1200/2400/4800/9600/19,200/115,200 bit/s Baud rate (default: 9600 bit/s) –25 °...
  • Page 4: Installing Cables

    Installing the DHSU1079-CT 250 A/50 mA 1. Install the Smart Power Sensor on the DIN 35 mm standard guide rail. 2. Press the Smart Power Sensor downwards onto the guide rail, and then push it in place along the guide rail.
  • Page 5 Each phase of Ua, Ub, and Uc in the Smart Power Sensor is connected with a fuse and a thermistor to prevent damage caused by external short circuits. Ua, Ub, and Uc do not need external fuse protection. Wiring Scenarios – Three-Phase Four-Wire Three-Phase Four-Wire 1.
  • Page 6 The CT direction must be consistent with the arrow direction as shown in the preceding figure. Display and Parameter Settings Display Display (Auto Loop) If no button is pressed for 60s, the backlight turns off. Auto loop switch time = 5s. Display Interface Description Display Interface...
  • Page 7 Display (Switch by Button " ") Display Interface Description Display Interface Description Comb. active Imp. active energy energy = 7654.33 kWh = 10000.0 kWh None parity, Exp. active 1 stop bit, energy Baud = 9600 = 2345.67 kWh bit/s Phase A 011 represents voltage address...
  • Page 8: Parameter Settings

    Parameter Settings Parameter Value Description Settings for communication stop bits 2: n.2 and parity bits: 3: n.1 2: None parity, 2 stop bits, n.2 4: E.1 3: None parity, 1 stop bit, n.1 4: Even parity, 1 stop bit, E.1 5: o.1 5: Odd parity, 1 stop bit, o.1 11–19...
  • Page 9: Troubleshooting

    To modify the user password: Troubleshooting Symptom Cause Analysis Troubleshooting Method 1. Connect the cables correctly No display after 1. The cable connection is incorrect. (see wiring diagrams). power-on 2. The supply voltage is abnormal. 2. Supply the correct voltage based on the specifications.
  • Page 10: Customer Service Contact

    Customer Service Contact https://digitalpower.huawei.com Path: About Us > Contact Us > Service Hotlines Digital Power Customer Service https://digitalpower.huawei.com/robotchat...

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