DGDW1 series Earthing Switch for Switchgear

The DGDW1 series Earthing Switch for Switchgear is HUAJIDIAN's core medium-voltage power protection product, primarily used for the safety isolation, grounding protection, and operation control of 12kV power distribution equipment. Leveraging mature manufacturing processes and a stringent quality control system, HUAJIDIAN is a reliable supplier for power engineering projects both domestically and internationally, providing core components for medium-voltage power distribution networks.

Compared to traditional manual grounding switches, this product features a dedicated motor drive mechanism, enabling remote electrical control and automatic opening and closing, eliminating the safety risks associated with manual on-site operation. The product integrates a high-strength insulation structure, all-weather resistance, and strong anti-pollution capabilities, completely resolving the industry pain points of traditional equipment, such as poor adaptability to harsh environments, high failure rates, and high maintenance costs.

Structural representation

Type introduction

Model Explanation and Core Technical Parameters

1. Model Explanation

The DGDW1 series model follows the standardized naming conventions for power equipment. The meanings of each character are as follows:

- D: Electrically Operated

- G: Disconnect Switch Attribute

- D: Single-Phase Structure

- W: Outdoor Applicable

- 1: Product Design Serial Number

2. Main Technical Parameters

Core Product Features

1. Fully Automatic Electric Operation, Safe and Efficient

The DGDW1 series Earthing Switch for Switchgear is equipped with a dedicated motor drive and switching actuator, supporting remote control and fully automatic operation without on-site manual operation. It effectively avoids operational risks in complex scenarios such as high altitude and high humidity, significantly improves the efficiency of power distribution equipment switching and maintenance, and meets the unattended operation requirements of modern smart grids.

2. Excellent Overvoltage Withstand Capability, Enhanced Breakdown Protection

The product strictly adheres to industry withstand voltage standards, with a power frequency withstand voltage of 42kV to ground and a break-point power frequency withstand voltage of 48kV; lightning impulse withstand voltage to ground is 75kV, and the break-point withstand voltage is 85kV. This effectively resists lightning and operational overvoltages, preventing equipment breakdown and short-circuit faults, and ensuring long-term stable operation of the power grid.

3. High-Strength Insulation Design, Safe and Reliable Isolation

Utilizing an integrated high-strength insulation support, it maintains an absolutely safe isolation distance when the equipment is open. The optimized insulation structure and high-quality materials effectively reduce the risk of insulation aging and leakage, providing a clear and visible disconnection point for equipment maintenance, and are a core safety guarantee for power grid operation and maintenance.

4. Strong All-Weather Adaptability and Wide Range of Applications

The DGDW1 series Earthing Switch for Switchgear can operate stably in environments ranging from -30℃ to 70℃, supports Class IV anti-fouling, and can withstand 2mm icing. It is suitable for high-altitude mountainous areas (3000m and below), coastal saline-alkali and humid areas, and heavy dust industrial sites. The mechanical life can reach 3000 cycles, with stable operation and extremely low maintenance costs.

Application Scenarios

1. Smart Grid and Distribution Automation Systems: Relying on remote electrical control functions, it meets the needs of remote monitoring and automatic operation and maintenance of the power grid, realizing intelligent and unmanned management of power distribution equipment.

2. Outdoor Substations and Overhead Line Projects: Used for isolation and grounding protection of 12kV outdoor substations and overhead lines, providing safe disconnection for daily equipment maintenance and fault diagnosis.

3. Industrial and Harsh Terrain Scenarios: Adaptable to complex environments such as high-altitude mountainous areas, coastal industrial parks, and heavy dust factories, solving equipment failure problems caused by pollution, temperature differences, and high altitude.

Real-world Engineering Application Case

1. Southwest Mountainous Rural Smart Grid Upgrade Project

Over 80 sets of HUAJIDIAN DGDW1 series Earthing Switch for Switchgear were deployed in the Yunnan-Guizhou Plateau mountainous rural power grid upgrade project. The project site has a maximum altitude of 2800m, with large diurnal temperature differences, abundant rainfall, and high pollution levels. Traditional manual switches are prone to corrosion and insulation failure, and are difficult to operate on-site. This product, with its Class IV pollution resistance, wide temperature adaptability, and remote electric operation advantages, completely solved the equipment maintenance problems in mountainous areas. The equipment has operated without failure for three consecutive years, significantly reducing the pressure on power grid maintenance.

FAQ

Q1: What are the core advantages of the DGDW1 series Earthing Switch for Switchgear compared to traditional manual grounding switches?

The core advantages are threefold: First, high level of intelligence, supporting remote electric automatic operation, avoiding the risks of manual on-site work and improving maintenance efficiency; second, stronger environmental adaptability, adaptable to wide temperature ranges from -30℃ to 70℃, Class IV pollution, icing, and high-altitude scenarios; third, longer service life and lower maintenance costs, with a mechanical lifespan of 3000 cycles, far exceeding industry norms, effectively reducing long-term equipment replacement and maintenance costs.

Q2: Is the DGDW1 series Earthing Switch for Switchgear suitable for harsh environments such as high altitudes and coastal areas?

Fully suitable. The product is suitable for altitudes up to 3000m, meeting the power needs of most high-altitude mountainous areas; it has a Class IV anti-pollution rating, effectively resisting industrial dust and coastal salt corrosion. Its excellent lightning impulse withstand voltage performance is suitable for frequent thunderstorms along the coast, and its wide temperature range design adapts to high and low temperature variations, ensuring stable operation in various harsh scenarios.