NZB710/NZB7101 series microcomputer PT measurement and control device
The parallel connection of voltage small busbars suitable for single busbar segmented wiring can simultaneously monitor the voltage of two segmented busbars PT, and is equipped with overvoltage and undervoltage protection. It can achieve the automatic parallel and restart function of small voltage busbars.

NZB711/NZB7111S series microcomputer line protection and measurement device
It is divided into protection units such as lines, incoming lines, and busbars, each with different protection functions. The incoming line protection unit and bus tie protection unit can achieve various required backup automatic switching functions through the coordination of relevant circuits, without the need to use independent backup automatic switching devices.

NZB712/NZB7121S series capacitor protection and measurement device
It can meet the comprehensive protection requirements of various high-voltage power capacitors, including differential current reflecting internal faults of bridge capacitor groups and differential voltage protection reflecting the voltage difference between the faulty section and the normal section in multi branch capacitors. At the same time, it can cooperate with the monitoring system to participate in the selection of small current grounding lines.

NZB715 series microcomputer comprehensive backup automatic switching device
Suitable for various distribution systems of 110kV and below levels; Integrating multiple backup and automatic operation modes has important practical value. This device can shorten the switching time of backup power supply, ensure the continuity and reliability of power supply, and reduce the impact range of power distribution accidents.

NZB717 series microcomputer motor protection and measurement device
Including high-voltage asynchronous motor protection unit, high-voltage synchronous motor protection unit, and motor differential protection unit. There are four different sets of thermal overload inverse time protection characteristic curves to choose from, and the same characteristic curve can be set with stepless difference, which can meet the protection requirements of various specifications and characteristics of motors.

NZB718/NZB7181S series microcomputer transformer protection and measurement device
This product is suitable for the protection and measurement of various capacity transformers. The differential current caused by different winding connection types of transformers is automatically corrected by the internal device.