Photovoltaic Power Generation Solutions

Committed to Building a Green, Safe, Efficient, and Stable Photovoltaic Energy System

Directly Addressing High Voltage, Empowering Photovoltaics

LAZZEN provides comprehensive photovoltaic system solutions tailored to the distinct characteristics of centralized power stations, commercial and industrial string inverter stations, village-level poverty alleviation distributed stations, and reside

Industry Challenge 01

Inverter Miniaturization

1. The trend towards miniaturization of centralized PV inverter cabinet sizes leads to switching devices being unable to fit inside the cabinet due to dimensional constraints.
Industry Challenge 02

Large Sub-Array Grid-Connected Short-Circuit Fault Impact

When multiple PV inverters operate in parallel, the inverter AC circuit breaker cannot withstand the short-circuit fault impact of a large-capacity step-up transformer.
Industry Challenge 03

High-Power Module Connection Mismatch

In scenarios where 400kW+ string inverters connect to 210-power modules, the high-power MPPT architecture causes multiple strings to be connected in parallel, exceeding the current-carrying capacity limit of the PV DC switch.

Scenario-Based Solutions

Learn How We Help Industry Leaders Embrace Digitalization and Accelerate Technology-Driven Innovation.

Centralized PV Solution
- Technical Highlights
  
  The NDM5GZX-1600 DC Molded Case Disconnect Switch adopts a compact DC1500V/2P design, solving installation challenges in narrow cabinet spaces. The NDM5-1600N AC Molded Case Circuit Breaker achieves the highest fault interruption performance among similar industry products, enabling AC protection for a 5MW integrated platform with four parallel 1.25MW inverters.
String PV Solution
- Technical Highlights
  
  The LNG80DC PV DC Switch adopts an innovative tower-type structure design, achieving DC1500V/80A without derating at an altitude of 5000m, and supporting the current-carrying requirements of four 210 PV modules connected in parallel. To enhance on-site operation and maintenance safety, the LNG80DC PV DC Switch features a fault-graded locking function. In the event of a DC fault that jeopardizes system safety, the switch locks in the open position and can only be closed after being unlocked via the upper-level management backend.
Distributed PV Solution
- Technical Highlights
  
  The NDMPGLC series PV-specific grid-connected circuit breaker features islanding protection, complying with the State Grid distributed PV grid-connection technical specification. It monitors voltage on both the generation side and the grid side, supports reverse connection of power supply and load, and offers comprehensive power IoT functionality, including topology identification for intelligent station area grid-connection control.