ZK Electric has upgraded its ZK600-P photovoltaic pump inverter, deeply integrating advanced PID control to achieve photovoltaic priority and intelligent hybrid constant pressure water supply. With an MPPT efficiency of 99.8%, multiple protections, and remote monitoring, it ushers in a "new era of intelligence" for photovoltaic pumps.

A frequency converter is a control device that uses the switching action of power semiconductor devices to convert power frequency power into electrical energy of another frequency. It can realize functions such as soft starting of AC asynchronous motor, variable frequency speed regulation, improved operating accuracy, power factor change, and overcurrent/overvoltage/overload protection.

In 2025, solar pump systems faced significant attention due to excessive Isc (Isc) limits. This article explains the meaning of Isc (short-circuit current), the maximum input current of the ZK200-P inverter (2.3-45A), and causes of exceeding this limit (such as overconfiguration). Exceeding this limit can lead to energy waste or damage, and the ZK200-P offers MPPT protection.

In 2024, the world's major photovoltaic module-demanding countries generally encountered challenges such as weak economic performance, limited grid absorption capacity and tariff barriers, causing the photovoltaic market to enter a stage of slowing growth from that year.

Constant pressure water supply system features 1. Pump soft start, stop, no impact and overpressure hazard, no water hammer phenomenon; 2. Reliable operation: the frequency converter realizes the soft start of the pump, prevents the pipe network from impacting, avoids the pipe network pressure exceeding the limit, and the pipe is broken; 3. The equipment has high degree of automation, the water supply is stable and reliable, and the water quality has no secondary pollution; 4. Perfect protection function: a single pump fails, actively sends out alarm information, and starts the standby pump to maintain the water supply balance;

Amidst the persistent expansion of urbanization, there emerges a parallel escalation in the essental need for avant-garde and ecologically sustainable infrastructure. Within this arena, the pivotal modernization of urban hydric provision systems emerges as a salient facet of the metamorphosis into more intellectual urban agglomerations.

Solar pump inverters have become increasingly popular in agricultural, industrial, and domestic water supply systems due to their ability to efficiently convert solar energy into power for driving water pumps.

Partial shading is extremely harmful to solar pump systems. Due to the "hot spot effect" and "barrel effect" it triggers, even the smallest obstruction can cause the system's power output to plummet by over 50%, resulting in a sharp drop in water output, frequent equipment starts and stops, or even complete shutdown.