The 35kV disconnect switch box is a crucial piece of equipment in the power system used for isolating high-voltage power sources. Below is a detailed introduction to the 35kV disconnect switch box compiled for you:

I. Basic Concepts

A 35kV disconnector box is a high-voltage electrical equipment, primarily used for circuit switching under no-load and voltage conditions, as well as for electrical isolation between high-voltage busbars, circuit breakers, and other electrical equipment under maintenance, and with live high-voltage lines. It ensures the safety of the power system during maintenance or repair.

II. Key Features

1. High voltage rating: Capable of withstanding 35kV of high voltage, suitable for applications in large-scale power systems.

2. ‌Flexible Structure: Isolation switch boxes generally come with various installation options, such as horizontal, side-mounted, and inverted installations, to accommodate different usage scenarios.

3. ‌Easy Operation: Equipped with a manual operation mechanism for simplicity and flexibility, and features safety devices like electromagnetic locks to prevent accidental operation.

4. Safe & Reliable: Offers excellent insulation properties and protection ratings, ensuring stable operation in harsh environments.

III. Application Environment

The 35kV disconnecting switch box is suitable for the following operating environments:

1. ‌Altitude: Not exceeding 1000m.

2. ‌Ambient Temperature: Maximum +40°C, Minimum -40°C.

3. Wind Speed: Not exceeding a certain limit (e.g., 35 m/s).

4. Earthquake Intensity: Not exceeding 8 degrees.

5. ‌Installation Site: Should be free from flammable materials, explosive hazards, chemical corrosion, and severe vibration.‌

IV. Technical Specifications

Technical specifications for the 35kV isolation switch boxes include the following common sizes:

• Rated Current: Such as 630A, 1250A, etc., select according to specific requirements.

• ‌Minimum Clearance: According to our national power industry standards, for lines with voltage ratings above 35kV, the minimum clearance is typically 1.5 meters. Additionally, the air gap distance for disconnect switches varies; for instance, the air gap distance for a 35kV indoor disconnect switch is 600mm.

• ‌Dynamic stable current and thermal stable current: These parameters ensure that the disconnect switch can reliably interrupt the fault circuit during a short-circuit fault.‌

V. Buying Suggestions

When selecting a 35kV isolator switch box, consider the following factors:

1. ‌Brand and Manufacturer: Choose well-known brands and manufacturers with a good reputation to ensure product quality and after-sales service.

2. Technical Specifications: Determine the required rated current, minimum opening, and other technical parameters based on actual needs.

3. ‌Application Environment: Consider the altitude, environmental temperature, wind speed, and other factors in the application environment when selecting a highly adaptable isolation switch box.

4. Price and Value for Money: Compare the prices of different brands and models reasonably while ensuring quality and requirements, choosing products with high value for money.

In summary, the 35kV isolator switchbox plays a crucial role in the power system. For more information or professional advice, please consult with electrical engineering.