FV-type on-load tap changer

The FV series on-load tap changers are suitable for power transformers and industrial transformers with rated voltages of 35–110 kV, maximum rated currents of 200 A, 350 A, or 500 A in three-phase applications and 200 A, 350 A, 500 A, or 700 A in single-phase applications, operating at frequencies of 50–60 Hz. They enable tap changes under load to regulate voltage levels. Three-phase on-load tap changers are used for Y‑connected windings with neutral-point voltage regulation, as well as for end‑ or mid‑point voltage regulation in delta‑connected windings. Single-phase on-load tap changers, on the other hand, can be employed for any desired voltage‑regulation configuration.

MZ-type on-load tap changer

The MZ series on‑load tap changers are suitable for power transformers and industrial transformers with rated voltages of 35–220 kV, maximum rated currents of 300 A or 600 A in three‑phase applications, and 300 A, 600 A, 800 A, 1,200 A, or 1,500 A in single‑phase applications, operating at frequencies of 50–60 Hz. They enable tap changes under load to regulate voltage levels. Three‑phase on‑load tap changers are used in Y‑connected configurations with neutral‑point voltage regulation, while single‑phase on‑load tap changers can be employed for any voltage‑regulation scheme.

Oil-immersed composite vacuum on-load tap changer

Our company's independently developed 10 kV oil-immersed composite vacuum on‑load tap changer is a completely new, innovative product. Its unique design integrates the tap selector and switching functions into a single unit, while incorporating advanced vacuum arc‑extinguishing technology and an embedded composite resistor transition structure. The product offers two voltage‑regulation modes—neutral‑point regulation and end‑terminal regulation—and features a compact footprint and lightweight construction, effectively saving installation space and delivering an exceptional user experience.