Name: HE-72.5 Eco-Friendly Gas-Insulated Digital Switchgear
Brand: henegia
Availability: InStock
Rating: 4.8 (89 reviews)

Product Overview

The DQC-72.5 is an innovative switchgear that uses clean air as its insulating medium, making it an environmentally friendly choice. Its fully enclosed design isolates all live components, ensuring safety and reliability in demanding conditions. Primarily designed for application in offshore wind turbine towers, this maintenance-free product offers a sustainable and robust solution for specialized medium-voltage applications.

Core Advantages & Features

High-Integration Compact GIS Design
Offshore Wind: 3-phase common-tank pressure vessel, 0.50–0.56 MPa air insulation. Integrated switching design, high space efficiency.

01
Long-Life Breaker Technology
Extended mech-electrical life: new tank-type vacuum circuit breaker. Adaptive solution for reliable current interruption/closing, enabling maintenance-free long-term operation in high-pressure offshore conditions.

02
Use of Clean Air as Insulating Medium
It uses clean air insulation, mainly for offshore wind turbine towers.

03

Technical Specifications

Basic Parameters
Rated voltage	72.5 kV
Rated power frequency withstand voltage (1 minute)	Up to 160/160 (+42) kV
Rated lightning impulse withstand voltage	Up to 380/380 (+59) kV
Rated continuous current	Up to 1250 A
Rated short-time withstand current	Up to 31.5 kA
Rated peak withstand current	Up to 3s
Rated peak withstand current	85 kA
Protection level	Up to IP54
Internal arc classification	AFLR, 31.5kA/1s
Insulation medium	Clean air
Arc extinguishing medium	Vacuum
Annual leakage rate	<0.1% /year
Temperature range	-30~+55
Corrosion resistance level	ISO12944 C5-M
Installation method	Indoor