NB-N30 Terminal Electrical Comprehensive Management and Protection

I. Introduction to NB-N30 Terminal Electrical Comprehensive Management and Protection:

The NB-N30 Terminal Electrical Comprehensive Management and Protection is used when three-phase loads are balanced, addressing issues of excessive neutral current. It is a high-tech energy-saving product designed to resolve equipment failures and safety problems caused by excessive neutral current under balanced three-phase loads in various industries.

Reasons for excessive neutral current: With the increasing level of residential electricity consumption, single-phase power usage scenarios have become increasingly complex. In commercial office buildings, shopping malls, banks, stock trading centers, schools, and other locations, hundreds of microcomputers, LED lights, and other energy-saving electronic devices are used. The concentrated use of these nonlinear loads generates significant third harmonics, with third harmonic currents reaching over 80% of the fundamental current. Since the vector angles of third harmonic currents are identical, the three-phase vector sum cannot cancel them out. Instead, they accumulate in the neutral line, causing the neutral current to exceed twice the phase current.

II. Hazards of Excessive Neutral Current:

1: Causes neutral cables to overheat, accelerating insulation aging, breaking down insulation, and leading to short circuits, increasing the risk of fire!

2: Neutral current circulating within the transformer reduces transformer capacity, increases transformer losses, causes severe overheating, and may even burn out the transformer in extreme cases.

3: Prolonged excessive neutral current can burn out the neutral wire, causing the system voltage to shift from 220V to 380V, which may destroy equipment.

4: Causes neutral drift, resulting in voltage between the neutral and ground, posing risks to equipment and personal safety.

5: Excessive neutral current leads to irregular tripping of circuit breakers.

6: Increases equipment losses and overheating in the power supply system, shortening its service life.

III. Benefits of Eliminating Neutral Current:

1. Improve Electrical Safety:

A. Eliminate neutral current to prevent fires.

B. Avoid voltage on the neutral line causing harm to personal safety.

C. Eliminate hazards to the neutral line and transformer caused by neutral current.

2. Expand System Capacity:

A. Improve the utilization rate of three-phase power supply transformers.

B. Eliminate single-phase overcurrent or saturation issues in transformers.

3. Energy Saving and Loss Reduction:

A. Eliminate neutral line losses.

B. Eliminate circulating current losses and core losses in transformers caused by neutral current.

4. Save Costs and Resources:

A. Conserve metal resources used for neutral lines.

B. Extend the service life of electrical equipment.

IV. Features of the Neutral Current Eliminator:

A. Can reduce neutral current by over 90%;

B. Fully automatic, stable operation, maintenance-free;

C. Long service life;

D. Unaffected by system imbalance, while compensating for system imbalance;

E. Real-time zero-sequence overcurrent monitoring, alarm, and fault switching;

NB-N30 Terminal Electrical Comprehensive Management and Protection Application Locations: Hotels, hospitals, exhibition halls, supermarkets, restaurants, electrical production lines, buildings, and other places with significant 3N harmonics, effectively managing excessive neutral current.

Yachuan Power Services:
   Yachuan adheres to the business philosophy of "continuously meeting users' expectations for products and efficient services." Our commitment to quality and meeting user expectations is our consistent stance and promise.
1: Manufacturer-developed, all products are certified and trustworthy;
2: Multiple production lines, conventional products are in stock, delivered via express delivery;
3: In case of quality issues, if telephone support cannot resolve the problem, our team will arrive on-site within eight hours after notification. Service personnel will only leave after troubleshooting and ensuring the device operates normally, confirmed by the user's signature;
4: Products come with a "three guarantees" policy and enjoy lifelong after-sales service. During the warranty period, if non-human factors cause quality issues, the company provides free repair or replacement. After the warranty period, quality issues will be maintained free of charge, with only cost fees charged for replacement parts;
5: Provide technical consultation and promptly address practical issues during product use.
6: 24-hour sales hotline: Manager Liu  135-729-793-71 (same number for online WeChat consultation), QQ: 3450146397 or 243616989.
"Achieving Customer Success, Creating the Future" is our goal. We not only provide products but also extend our professional service system. We hope to become your trusted partner with our sincerity and work together to create brilliance.