Product Brief

A split‑winding transformer is a multi‑winding power transformer in which each phase consists of one high‑voltage winding and two or more low‑voltage windings with identical voltage and capacity. Under normal conditions, power energy is transmitted only between high‑voltage and low‑voltage windings. In case of fault, it functions to limit short‑circuit current. Each branch features equal capacity and equal or close rated voltage, which can operate independently or in parallel, and carry the same or different loads. When a load or power supply connected to one low‑voltage winding fails, the remaining low‑voltage windings can keep normal operation. There is no electrical connection among split windings, and their magnetic coupling is relatively weak. Large impedance shall be maintained between split branches, while the impedance between split windings and non‑split windings shall be consistent.

Our double‑split and four‑split cast‑resin dry‑type transformers are manufactured with premium materials, advanced production and testing equipment and strict manufacturing processes. They are dry‑type transformers with high electrical strength, mechanical strength and thermal resistance, featuring high reliability and long service life. The products are applicable to photovoltaic power plants and battery energy‑storage power stations. Different protection classes can be configured according to various service environments.

Product Features

1. The transformer meets the rated power requirement of inverters.
2. The transformer is equipped with temperature sensors, whose signals can be fed into inverters.
3. The connection mode of the transformer complies with system requirements.
4. The rated voltage of secondary windings is consistent with the output voltage of inverters.
5. The rated voltage of primary windings matches the power‑supply voltage at grid connection points, with an applicable range of at least ±2×2.5%.
6. Each inverter is equipped with an independent secondary winding for isolated current.
7. The short‑circuit voltage Uk between primary and secondary windings satisfies system requirements.
8. The short‑circuit voltage Uk and split factor between two secondary windings comply with system requirements.