MV Switchgear

XGN-40.5 Fixed Metal-Enclosed Switchgear

XGN-40.5 fixed metal-enclosed switchgear provides switching, control and protection for indoor 35 kV-class substations, power facilities and industrial sites. Rated at 40.5 kV, the series offers main-busbar currents of 1,250, 1,600 or 2,000 A and short-circuit breaking capacities of 25 or 31.5 kA.

Incoming and outgoing feeders, busbar sections, metering and protection are arranged into a lineup that follows the project's single-line diagram. Breaker configuration, cable terminations and interlocks are specified for the circuit duties, with short-time and peak withstand ratings matched to the network fault level.

Technical Specifications

Rated Voltage	40.5 kV
Rated Frequency	50 Hz
Rated Current	1250 / 1600 / 2000 A
Short-Circuit Breaking Current	25 / 31.5 kA
Short-Time Withstand Current	25 / 31.5 kA (4s)
Peak Withstand Current	63 / 80 kA
Power-Frequency Withstand Voltage	95 kV / 1 min
Lightning Impulse Withstand Voltage	185 kV
Enclosure IP Rating	IP2X
Standards	GB 3906 / IEC 62271

Key Features

40.5 kV / 35 kV-class rating.
Fixed metal-enclosed design.
Vacuum circuit breaker.
For substations & industry.

Typical Applications

Utility 35 kV substations
Industrial 35 kV substations
Power-station switchrooms

Installation & Aftercare

Prepare the site, plan routine checks and keep service records.

What needs to be ready before installation?

Arrange the foundation and room access around the complete fixed-panel lineup, including the largest component’s removal route.
Provide cable bending space, earthing and access to the installed breaker and instrument-transformer compartments.
Keep ventilation and any pressure-relief path clear, and control moisture or conductive dust around insulation and cable trenches.

What should operators check during routine rounds?

Review trip records, breaker indications and any installed condition alarms; inspect room moisture and ventilation during rounds.

What is covered during planned maintenance?

At scheduled isolation, qualified personnel check breaker mechanisms, interlocks, primary connections and insulation for wear, tracking or heat damage.
Record test results and protection settings; examine the affected circuit after a fault or unexplained trip before returning it to service.

Customization Options

Define the electrical configuration and the details needed for your site.

Switchboard lineup: Incoming, outgoing, bus-coupler and metering panels to the approved single-line diagram.
Breaker & busbar duty: Select rated current and fault-breaking duty within the published series range.
Protection & measurement: Relay functions, CT/VT ratios, meter requirements and secondary circuit diagrams.
Cable & installation: Cable quantity and size, entry direction, panel interfaces and the required maintenance aisle.
Controls & signalling: Auxiliary supply voltage, local/remote control and requested alarm or communication interfaces.

Project-specific options and accessories are confirmed in the quotation and approved drawings.