JDQXF series gas insulated voltage transformer

Product Introduction:The inductive voltage transformer is used for GIS, it is widely applied to the nominal system voltage is 66-1000kV, and 50/60Hz frequency in power system, for the secondary measurement apparatus, protection and control device provide voltage signal.Complete range of productsThe nominal system voltage of VT is 66-500kV.And, the product has three-phase and single phase two kinds of structure, in order to facilitate the GIS customer substation site handover test, our company developed the isolated structure of the GIS VT product Lean productionIn order to make sure the e...

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Product Encyclopedia

Product Introduction:

The inductive voltage transformer is used for GIS, it is widely applied to the nominal system voltage is 66-1000kV, and 50/60Hz frequency in power system, for the secondary measurement apparatus, protection and control device provide voltage signal.

Complete range of products

The nominal system voltage of VT is 66-500kV.And, the product has three-phase and single phase two kinds of structure, in order to facilitate the GIS customer substation site handover test, our company developed the isolated structure of the GIS VT product

Lean production

In order to make sure the excellent produce quality, the High Voltage winding is produced by automatic equipment, and iron core and coil assembly are applied by line operation.

Full type test capability

The company has 3000kV lightning impact laboratory and 3 sets of GTU test platforms, which can carry out a full set of GIS VT factory test projects of 1000kV and below

Quality leadership

Through ISO 9001-2008, ISO 14001-2008, BS OHSAS 18001-2007 system certification, the test obtained CNAS certification

Voltage level	66kV-500kV
Phase Number	Single Phase, Three Phase
Gas insulation	SF6, Mixed air, clean air
the isolated structure	product optional

JDQXF Series Gas Insulated Voltage Transformer – Precision, Safety & Compact GIS Integration

The JDQXF Series Gas Insulated Voltage Transformer (VT) is engineered for high-voltage Gas-Insulated Switchgear (GIS) systems operating at 66kV to 500kV, delivering exceptional accuracy and reliability for metering, protection, and control applications in modern power networks. Utilizing advanced SF6 or eco-friendly alternative gases like clean air or mixed gas insulation, this VT ensures stable performance even in space-constrained substations.

Designed with both single-phase and three-phase configurations, the JDQXF series features an optional isolated structure that simplifies on-site commissioning and handover testing—reducing downtime during GIS installation. Its compact, hermetically sealed design eliminates external contamination risks while maintaining consistent dielectric strength across 50/60Hz systems.

High-accuracy GIS voltage transformer – ideal for precision metering and sensitive relay protection
Compact SF6 insulated VT – maximizes substation space efficiency with robust environmental sealing
Eco-friendly gas-filled voltage sensor – supports sustainable grid infrastructure with optional clean-air insulation

Manufactured under ISO 9001, ISO 14001, and OHSAS 18001 certified processes, every unit undergoes full-type testing—including lightning impulse up to 3000kV and partial discharge verification—thanks to in-house GTU test platforms. Automated winding production and lean assembly lines guarantee uniform quality, while CNAS-accredited labs validate compliance with IEC 60044 and other international standards.

Trusted by utilities worldwide, the JDQXF series combines long-term stability, minimal maintenance, and future-ready flexibility—making it a cornerstone component for smart, resilient, and compact high-voltage substations.