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Distributed PV Protection Switch

This product is mainly used in 0.4kV distributed photovoltaic power generation system. While protecting the grid-connected line from overload, short circuit and leakage, it can realize automatic grid connection and separation.

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Smart Measurement Switch

The smart measurement switch monitors in real time distribution line voltage, current, power, and has advanced applications such as edge management, topology identification and power consumption analysis, with basic features of low-voltage distribution line connection, breaking and short-circuit overload protection.

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Low-voltage Testing Unit (LTU)

The low-voltage sensor is mainly installed on the low-voltage outlet cable of the opening and closing station, ring main unit, and low-voltage chamber of the box transformer, which can realize the collection and monitoring of voltage, current, active power, reactive power, and temperature on the low-voltage 400V branch line, and has the function of line fault alarm and indication.

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Low-voltage Smart Switch

Low-voltage smart switch is an important part of the intelligent station. It is an IoT-based intelligent circuit breaker integrating residual current relay, contactor, plastic case circuit breaker, suitable for three-phase four-wire neutral grounded power supply system.

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Primary and Secondary Sets of Ring Main Unit

The primary and secondary integrated sets of ring main unit is composed of ring-in and ring-out units, feeder units, bus equipment (TV) units, centralized DTU units, outer box, connecting cables, etc. The voltage, current, telematics and remote-control circuits of all ring-in and ring-out units, feeder units and bus equipment units are designed with standardized interfaces and centralized in the navigation plug room of DTU units through secondary air plugs.

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Primary and Secondary Integrated Pole-mounted Circuit Breaker

Since 2016, the State Grid has proposed a technical solution of primary and secondary integrated distribution equipment to solve the problems of distribution automation coverage of incremental equipment and mismatch of primary and secondary devices in large-scale construction and transformation of distribution networks, as well as to realize lean line loss management.

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