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N-line Treatment Protection System (NTPS)

Your Professional N-line Treatment Protection System (NTPS) Supplier！

Leonhard (Shanghai) Electricity Co., Ltd. (LEONHARD) established in 2017, is a high-tech enterprise in the field of power quality, specializing in modern, professional, and intelligent high-quality products and services.As a pioneer and leader in power quality solutions, LEONHARD specializes in R&D, production, and sale of Active Harmonic Filter, Static Var Generator, Hybrid Var Compensator System,Dynamic Voltage Restorer,VFD DC Link System,Unified Power Quality Conditioner.

why choose us

Professional Team

Leonhard is the first company in China to apply SiC MOSFET to the power quality industry. It has advanced manufacturing equipment and a professional R&D team. Through continuous improvement and R&D, its SiC series products have now reached the third generation.

Our Certifications

Our products are backed by CE certification, patents, and third-party testing reports. With successful projects across multiple international markets, we understand global standards and application requirements.

Sales Market

Our power quality products have been widely used in Poland, Mexico, Belarus, Cambodia, Thailand, Vietnam, Dortmund and other countries.

Our Service

We provide end-to-end service from pre-sales system design to installation, commissioning, and after-sales support. With 24/7 technical assistance and regular maintenance services, we help ensure stable system operation over time.

Overview of N-line Treatment Protection System (NTPS)

The N-line Treatment Protection System (NTPS) is an electrical device designed to protect precision equipment by managing neutral line issues, harmonics, and three-phase imbalances. It ensures power supply safety by eliminating neutral line current, preventing electrical fires, and providing both definite and inverse time overcurrent protection for terminal circuits.

Product Specification

We offers the following product specifications：

Electrical parameters
Wiring method	Three-phase four-wire
Operating voltage	380V/220V±20%
Operating frequency	50/60Hz, ±10%
Product specifications	Models 90, 153, 225, 320, 450
Current transformer specifications	50:5 ~ 20000:5, 50:1~20000:1
Noise	＜60dB
Technical features
Switching devices	SiC Mosfet
Switching frequency	>100kHz
Heat dissipation methods	Intelligent air cooling
Heat dissipation control	Adaptive fan speed adjustment
Protection function	Output overcurrent protection, output current limiting protection, over-temperature protection, DC bus overvoltage protection, AC input undervoltage protection, AC input overvoltage protection, control system fault protection, main circuit component damage and disconnection protection; overcurrent instantaneous trip protection for neutral wire, definite time and inverse time protection;

Common types

We offers the following product introduce：

Zero-sequence Harmonic Processor

A Zero-sequence Harmonic Processor (or Filter) is an electromagnetic device, often a special transformer (e.g., zigzag or delta-wye), designed to mitigate triplen harmonics and neutralize excessive neutral conductor current. It provides a low-impedance path to capture these harmonics at the source, preventing them from traveling upstream to main transformers.

Neutral Line Overcurrent Protection Device

NTPS integrates neutral overcurrent protection and neutral current elimination.By eliminating neutral current and protecting the neutral conductor, NTPS enhances power supply continuity and slows cable aging.It delivers an all-round solution for high and low-order harmonics, three-phase imbalance, and neutral overcurrent.

Medical Power Purifier

This device is specifically designed for purifying the power supply of critical loads in medical systems, providing a comprehensive solution.

Medical Power Purifier

Solve voltage sag depth of 30%-90%

Solve harmonic content of 2nd-63rd orders

Solve three-phase imbalance

Solve voltage rise to ground

Solve neutral line overcurrent

Solve voltage spikes and drops

Solve voltage flicker

Features voltage stabilization function

Application

Neutral Line Protection:

Provides both definite and inverse time overcurrent protection specifically for neutral conductors.

Power Quality Management:

Actively manages and mitigates three-phase imbalances and harmonic distortions in the electrical network.

Precision Equipment Safety:

Protects sensitive electronic equipment from electrical faults and line anomalies.

Fire Prevention:

Reduces the risk of electrical fires caused by overloading, imbalances, or faults on the N-line.

System Continuity:

Ensures continuous power supply, enhancing the overall reliability of the electrical distribution system.

Certifications

Other Services

All of our machines will be fully checked by our quality control department before the shipment. We guarantee all of our have a one-year warranty (quick-wear parts not included).

Training details: Operation principles, system, and structure, safety and maintenance, software processing technique, etc.

Numerous feedback from our clients have proven that our machines are stable in performance with rare malfunction.However, we would like to handle it as follows once malfunction occurs:

We guarantee that we will give you a clear reply within 24 hours.

Customer service staff will assist you in analyzing the malfunction to locate the cause.

If the malfunction is caused by improper operation of software and other soft faults, we will help solve the problem online.

We will offer plenty of online support, like detailed technical and installation instructions via email, video, and telephone.

Package & Delivery

1. Package: Standard export package or Custom

2. Delivery: By air express, by sea

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FAQ

Q: What is an N-line Treatment Protection System (NTPS)?

A: NTPS is a power quality device designed to manage and protect the neutral line (N-line) in electrical systems by reducing neutral current, stabilizing voltage, and preventing overload conditions.

Q: Why is neutral line protection important?

A: In modern electrical systems with nonlinear loads, excessive neutral current can cause overheating, equipment malfunction, and safety risks. NTPS helps ensure system stability and safety.

Q: What causes high neutral current in electrical systems?

A: High neutral current is typically caused by unbalanced loads and harmonic distortion generated by devices such as computers, LED lighting, and variable frequency drives.

Q: How does NTPS reduce neutral current?

A: NTPS actively filters harmonic currents and redistributes load imbalance, significantly reducing current flow in the neutral conductor.

Q: What are the main benefits of using NTPS?

A: Key benefits include improved electrical safety, reduced overheating risk, enhanced equipment lifespan, and better overall power quality.

Q: Where is NTPS typically applied?

A: NTPS is widely used in data centers, commercial buildings, hospitals, industrial facilities, and any environment with high nonlinear loads.

Q: Can NTPS work together with other power quality devices?

A: Yes, NTPS can be integrated with systems such as active harmonic filters (AHF) and static var generators (SVG) to provide comprehensive power quality management.

Q: Does NTPS help reduce energy losses?

A: Yes, by minimizing neutral current and improving load balance, NTPS reduces line losses and enhances overall energy efficiency.

Q: What installation options are available for NTPS?

A: NTPS systems are typically available as cabinet-type units or modular designs for flexible installation in new or existing electrical systems.

Q: What voltage levels are supported?

A: NTPS solutions are available for low-voltage systems and can be customized for specific project requirements.

Q: What monitoring and communication features are included?

A: NTPS systems often support communication protocols such as RS485 and Modbus, enabling real-time monitoring and integration with building management systems.

Q: Is NTPS suitable for sensitive environments like hospitals or data centers?

A: Yes, NTPS is particularly beneficial in sensitive environments where stable power supply and reduced electrical risk are critical.

Q: What protection features are included in NTPS?

A: Typical protections include overload protection, over-temperature protection, fault detection, and system alarms.

Q: What maintenance is required for NTPS systems?

A: NTPS systems require minimal maintenance, mainly routine inspections and ensuring proper ventilation and operating conditions.

Q: What information is required for selecting an NTPS solution?

A: Key parameters include system voltage, load characteristics, neutral current levels, harmonic content, installation space, and project-specific requirements.

As one of the most professional n-line treatment protection system (ntps) manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale custom made n-line treatment protection system (ntps) from our factory. For more information, contact us now.