SHANGWEI SHANGWEI

中文
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Intelligent protection device for low voltage feeder

SW-DLZ series products set protection, measurement, control, bus communication as a whole, while providing remote automatic control, on-site direct control, panel indication, signal alarm, operation records, trip alarm records and switch records and other functions. The product is more powerful and provides customers with better choices.

Key words:

Shangwei Electric

Classification:

Transformer series

Product Consulting:

 

+86-312-6783322

 

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  • Description

  • SW-DLZ500 、 SW-DLZ600 、 SW-DLZ800 series low-voltage intelligent protection device, suitable for low-voltage systems with rated voltage to AC660V, rated current to AC400A, and rated frequency of 50/60Hz. ProductsOn the basis of the original zero-sequence protection, over-current protection, over-voltage protection, leakage protection, switching and other functions are added., yes.Low pressure systemIntelligent integrated device for protection, monitoring and control.

    Low voltage intelligent protection deviceThe zero-sequence protection function not only solvesMCC line non-metallic grounding, plastic shell switch and thermal relay do not operate, causing PC leapfrog trip and causing large-area power loss problem. And increasedMeasurement of current, voltage, power, leakage current,andInverse time limit overcurrent, low fixed time limit overcurrent, high fixed time limit overcurrent, phase failure protection, current imbalance, demand protection, linkage protection, undervoltage protection, overvoltage protection, leakage protection and other functions.The zero-sequence protection function is also subdividedLow fixed time limit zero sequence, high fixed time limit zero sequence, inverse time limit zero sequenceProtection; the use of protection-level zero-sequence current transformers, transformer transformation ratio has a variety of options, can ensure the thermal power plant primary current smaller circuit zero-sequence current acquisition.

    SW-DLZ series products set protection, measurement, control, bus communication as a whole, while providing remote automatic control, on-site direct control, panel indication, signal alarm, operation records, trip alarm records and switch records and other functions.The product is more powerful and provides customers with better choices.

     

    Product Features
    The auxiliary power supply supports AC85V ~ 265V/DC110V ~ 350V or AC380V ± 10% (380V power supply module is required).
    The measurement function includes the measurement of current and voltage of the protection circuit and the measurement of other parameters such as power and residual current (leakage current).
    It has the functions of inverse time limit overcurrent, low fixed time limit overcurrent, high fixed time limit overcurrent, low fixed time limit zero sequence, high fixed time limit zero sequence, inverse time limit zero sequence, phase failure protection, current imbalance, demand protection, linkage protection, undervoltage protection, overvoltage protection, leakage protection, etc.
    Over-current protection and zero-sequence over-current protection are available with multiple inverse-time characteristics.
    Up to 9 DI passive dry contact inputs, and the signal power supply adopts the built-in DC24V power supply.
    Up to 5 DO outputs for protection trip, remote control and alarm.
    It has a standard RS-485 communication interface and adopts ModbusRTU to ensure the fast and reliable communication of the upper computer.
    It has a DC4-20mA analog output interface, which can set a number of analog parameters.
    It has a system clock and 8 fault recording functions. The system clock records the current time (day, hour, minute, second), and the fault recording function records the cause of the fault.
    The full Chinese LCD display interface is used.

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