Installation Height Of Encapsulated Dry Type Transformer

Proper installation height is critical for the safe operation, maintenance accessibility, and performance stability of CHH Power’s encapsulated dry-type transformers. All installations must strictly comply with national power equipment installation regulations to ensure optimal efficiency and long-term reliability. Below is a standardized breakdown of core height and spacing requirements.

Contents hide

1 1. General Spacing Requirements (10kV and Below Models)

2 2. Ground-Mounted Installation Requirements

3 3. Pole-Mounted Installation Requirements (315kVA and Below Models)

4 4. Secondary Fuse Installation Positions (Pole-Mounted & Ground-Mounted Platforms)

5 5. Lead Wire Requirements

6 Key Compliance Notes

7 OUR CERTIFICATE

8 OUR PROJECTS

1. General Spacing Requirements (10kV and Below Models)

Distance to Fences/Walls: The gap between the transformer’s outline and surrounding fences or walls must be no less than 1m—this facilitates transportation, routine inspection, and maintenance.
Operation Clearance: A minimum clearance of 2m must be reserved in the main operation direction to ensure safe access for technicians.
Metal Fence Specifications: If a metal fence is used for protection, it must be reliably grounded. Visible warning signs (e.g., “High Voltage – Keep Away”) must be posted in prominent locations.

2. Ground-Mounted Installation Requirements

Transformer Pier Height: The height of the ground-mounted transformer pier is typically 0.5m (ensures moisture prevention and stable placement).
Perimeter Fencing: A fence with a height of no less than 1.7m must be installed around the pier. Warning signs are mandatory in obvious positions to restrict unauthorized access.

3. Pole-Mounted Installation Requirements (315kVA and Below Models)

Bottom-to-Ground Distance: The vertical distance from the transformer’s bottom to the ground must be no less than 2.5m.
Live Part Clearance: The vertical distance from any live component to the ground must be no less than 3.5m (prevents electric shock hazards).
Platform Stability: The pole-mounted transformer platform must be structurally stable and firm.
Waist Rail Fixing: Use Φ4.0mm galvanized iron wire to wind the waist rail for at least 4 even turns—no joints are allowed in the wire, and it must be tightly secured after winding.
Platform Overhang Limit: The overhang of the pole-mounted platform must not exceed 0.5m to avoid structural stress or instability.

4. Secondary Fuse Installation Positions (Pole-Mounted & Ground-Mounted Platforms)

4.1 With Secondary-Side Isolating Switch

The secondary fuse must be installed between the isolating switch and the low-voltage insulator. Alternatively, a fuse with isolating functionality may be used.

4.2 Without Secondary-Side Isolating Switch

The secondary fuse must be mounted outside the low-voltage insulator. Insulated wires should be used to bridge the two ends of the fuse for reliable connection.

5. Lead Wire Requirements

All high-voltage and low-voltage lead wires for both pole-mounted and ground-mounted transformers must use insulated wires to ensure electrical safety and prevent short circuits.

Key Compliance Notes

These requirements apply to CHH Power’s encapsulated dry-type transformers; special scenarios (e.g., high-altitude areas, harsh environments) may require customized adjustments.
Installation must be performed by qualified electricians familiar with power equipment safety standards.
Post-installation inspections must verify all height, spacing, and grounding requirements are met before energization.