SHANGWEI SHANGWEI

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Intelligent protection device for low voltage feeder

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.

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Leakage current monitoring and protection device

Leakage current monitoring and protection device
The leakage current on-line monitoring device developed and produced by our company is suitable for 400V TN and TT systems such as power plants, coal, steel, textiles, etc. It can solve the problem of large-scale power loss caused by high-resistance grounding in MCC lines, non-operation of plastic shell switches and thermal relays, resulting in leapfrog tripping after PC. The insulation monitoring system continuously detects the leakage current of the electricity system, calculates the change of the insulation performance of the electrical system in real time, and accurately alarms when insulation faults occur, effectively reducing equipment damage, personal electric shock and electrical fire accidents due to leakage, and avoiding sudden power outages. Huge economic losses and adverse social effects are caused, and the prevention is truly preventive.

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Anti-override trip device

Anti-override trip device
In the power supply system of our country, the low-voltage distribution system drops the transmission voltage of the power grid to the distribution voltage, and then transmits it to the low-voltage distribution equipment through the distribution line. At present, low-voltage distribution lines often cause voltage loss, overvoltage, overload and short circuit due to a large number of loads. Moreover, due to the short distribution lines and many extension stages, they will also cause the distribution lines to trip over the level and cause great pressure on the distribution system. Therefore, it is necessary to use the "anti-trip" method and system to protect the distribution lines and distribution systems.

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Phase-to-ground protection device

Phase-to-ground protection device
SW-DLZ series phase-to-ground short circuit monitoring and protection devices are suitable for 400V TN system, which can solve the problem of large-area power loss caused by PC leapfrog trip caused by non-metallic grounding, plastic shell switch and thermal relay of MCC line.

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