NB-N30 Terminal Electrical Comprehensive Management and Protection

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

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 neutral overcurrent in various industries under balanced three-phase load conditions.

Reasons for Neutral Overcurrent: With the increasing level of residential electricity consumption, single-phase usage scenarios have become increasingly complex. In commercial office buildings, shopping malls, banks, stock trading centers, schools, and other venues, hundreds of microcomputers, LED lights, and other electronic energy-saving devices are used. The concentrated use of these nonlinear loads generates severe 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 on 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 fire risks!

2: Neutral currents circulating within the transformer reduce transformer capacity, increase transformer losses, cause severe overheating, and may even burn out the transformer in severe cases.

3: Prolonged neutral overcurrent can burn out the neutral wire, causing system voltage to shift from 220V to 380V and damaging 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 switches.

6: Increases equipment losses and overheating in the power supply system, shortening 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 of neutral current to the neutral line and transformer.

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 caused by neutral current in transformers.

4. Save Costs and Resources:

A. Conserve metal resources 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; simultaneously compensates for system imbalance;

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

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

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, on-site assistance will be provided within eight hours after notification; service personnel will only leave after troubleshooting and ensuring normal operation, confirmed by the user;
4: Products come with a "three guarantees" policy and lifelong after-sales service. During the warranty period, non-human-induced quality issues are repaired or replaced free of charge; after the warranty period, quality issues are 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.