• FSZ-300/10-9
FSZ-300/10-9
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FSZ-300/10-9

Main products of the company: current transformer cores, transformer laminated cores, magnetic shielding, current transformer coils, etc. Certified by ISO9001 quality management system, ISO14001 environmental management system, and OHSAS18001 occupational health management system.

Oil-immersed composite vacuum on-load tap changer
The FSZ 300/10-9 oil-immersed composite vacuum on-load tap changer is a new‑generation on‑load tap changer developed by our company. It integrates the tap selector and switching mechanism into a single unit, employs vacuum arc extinction, and features an embedded composite resistor transition structure (see the appendix for external dimensions and mounting details). The device comprises an oil chamber and a composite insert core, among other components.
This product series offers two voltage‑regulation methods: neutral‑point regulation and end‑terminal regulation. It features a compact footprint, light weight, simple construction, long service life, and easy maintenance.
The switch’s technical performance complies with the national standard GB 10230.1-2007, “On‑Load Tap Changers.”
The switching system consists of a tap changer (responsible for tap‑changing operations), an electric actuator (which controls the operation of the tap changer), and connecting cables (which link the tap changer to the actuator).
Note: For use with the corresponding switch, please refer to the controller’s user manual.


Contact: General Manager Yao +86-13584935499

  • Product Description
  • Oil-immersed composite vacuum on-load tap changer
    The FSZ 300/10-9 oil-immersed composite vacuum on-load tap changer is a new‑generation on‑load tap changer developed by our company. It integrates the tap selector and switching mechanism into a single unit, employs vacuum arc extinction, and features an embedded composite resistor transition structure (see the appendix for external dimensions and mounting details). The device comprises an oil chamber and a composite insert core, among other components.
    This product series offers two voltage‑regulation methods: neutral‑point regulation and end‑terminal regulation. It features a compact footprint, light weight, simple construction, long service life, and easy maintenance.
    The switch’s technical performance complies with the national standard GB 10230.1-2007, “On‑Load Tap Changers.”
    The switching system consists of a tap changer (responsible for tap‑changing operations), an electric actuator (which controls the operation of the tap changer), and connecting cables (which link the tap changer to the actuator).
    Note: For use with the corresponding switch, please refer to the controller’s user manual.

Main products of the company: current transformer cores, transformer laminated cores, magnetic shielding, current transformer coils, etc. Certified by ISO9001 quality management system, ISO14001 environmental management system, and OHSAS18001 occupational health management system.

FSZ-300/10-9

Main products of the company: current transformer cores, transformer laminated cores, magnetic shielding, current transformer coils, etc. Certified by ISO9001 quality management system, ISO14001 environmental management system, and OHSAS18001 occupational health management system.

Oil-immersed composite vacuum on-load tap changer
The FSZ 300/10-9 oil-immersed composite vacuum on-load tap changer is a new‑generation on‑load tap changer developed by our company. It integrates the tap selector and switching mechanism into a single unit, employs vacuum arc extinction, and features an embedded composite resistor transition structure (see the appendix for external dimensions and mounting details). The device comprises an oil chamber and a composite insert core, among other components.
This product series offers two voltage‑regulation methods: neutral‑point regulation and end‑terminal regulation. It features a compact footprint, light weight, simple construction, long service life, and easy maintenance.
The switch’s technical performance complies with the national standard GB 10230.1-2007, “On‑Load Tap Changers.”
The switching system consists of a tap changer (responsible for tap‑changing operations), an electric actuator (which controls the operation of the tap changer), and connecting cables (which link the tap changer to the actuator).
Note: For use with the corresponding switch, please refer to the controller’s user manual.

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