Power System Engineering

Solutions in China

Electrical Distribution Equipment and Power Compensation Unit Manufacturer

MINGRUI is a professional electrical system automatic equipment manufacturer in China, and our product catalog mainly covers neutral grounding resistor, arc suppression coil, transformer protection device, air-cooled transformer cabinet, electrical accessory and other electrical power equipment. These electrical devices and components are very popular in Russia, Indonesia and other countries, and we have accumulated a vast wealth of overseas experience in project design and customer service, making us a reputed partner in power engineering industry.More

    1. MRD-BJ Neutral Grounding Resistor (NGR)

      If our neutral grounding resistor is installed, the ground fault current will be reduced significantly when compared to ungrounded system. At the same time, the voltage increase of un-faulted phase ...

    1. MRD-FD High Resistance Neutral Grounding Resistor (NGR)

      This power resistor is utilized to reduce fault ground current, thus protecting stator winding and associated equipment of a generator from damage, and cutting down transient ...

    1. Arc Suppression Coil

      Our earthfault compensation system makes use of advanced algorithms (remnant current increment method, active power method, etc.) to select fault line in a prompt and accurate way ...

    1. Switchgear

      We have 6 years of experience in manufacturing switchgears, and these products, which are classified into high voltage switchgear and low voltage switchgear, have passed the China Compulsory Certification.

    1. SF6 Gas Leak Detector & Alarm System

      The sulfur hexafluoride leak detector realizes self-diagnostic testing, and it could tell even very subtle concentration change of SF6 in the gas insulated switchgear (GIS). Meanwhile, it also provides trend analysis ...

    1. Grounding Transformer

      This open ventilated dry transformer (OVDT) is an eco-friendly power transformer packed in plywood boxes, and it is safe, flame-retardant, non-toxic, radioresistant and damp proof. In particular, about 700 sets ...

    1. Cooler Control Cabinet for Transformer

      It takes PLC as its control center, and the electrical components are offered by Schneider, ABB, Siemens and other world-class manufacturers to ensure its steady performance.

    1. Nitrogen Injection Fire Protection System for Transformer

      The transformer fire safety system uses PLC instead of conventional relays to cut down the failure rate of electrical devices, and it has a RS485 communication interface to facilitate data transmission ...

    1. Multifunctional Power Meter

      This multifunction power measuring device is able to calculate active energy, reactive energy, harmonic content and many other commonly-used electrical parameters ...