What are the installation steps of a Fixed Type Switchgear?

As a supplier of fixed type switchgear, I am often asked about the installation process of our products. In this blog post, I will share the detailed installation steps of fixed type switchgear, which will help you understand how to install our switchgear correctly and safely. Fixed Type Switchgear

1. Preparation before Installation

Before starting the installation of the fixed type switchgear, a series of preparatory work needs to be carried out to ensure the smooth progress of the installation.

Site Inspection: First, conduct a comprehensive inspection of the installation site. The site should be clean, dry, and free from any debris or obstacles. The floor should be level to ensure the stable placement of the switchgear. The ambient temperature and humidity should also meet the requirements of the switchgear. Generally, the temperature should be between -5°C and 40°C, and the relative humidity should not exceed 95%.
Equipment Inspection: Carefully check the switchgear upon arrival at the site. Inspect the appearance of the switchgear for any damage during transportation. Check the components inside the switchgear, such as circuit breakers, contactors, relays, and fuses, to ensure they are intact and in good condition. Also, verify that all the accessories and tools required for installation are included.
Documentation Review: Thoroughly review the installation manual and technical documentation provided with the switchgear. These documents contain important information about the installation process, electrical connections, and safety precautions. Make sure you understand all the instructions before proceeding with the installation.

2. Foundation Installation

The foundation of the switchgear is crucial for its stability and proper functioning.

Foundation Design: Design the foundation according to the size and weight of the switchgear. The foundation should be strong enough to support the weight of the switchgear and any additional loads. It is usually made of reinforced concrete or steel structure.
Foundation Installation: Install the foundation at the designated location on the installation site. Ensure that the foundation is level and aligned with the installation marks on the switchgear. Use leveling instruments to check the levelness of the foundation and make necessary adjustments.
Anchor Bolt Installation: Install anchor bolts on the foundation according to the installation holes on the switchgear. The anchor bolts should be firmly embedded in the foundation to ensure the secure connection between the switchgear and the foundation.

3. Switchgear Placement

After the foundation is installed, it’s time to place the switchgear on the foundation.

Lifting and Moving: Use appropriate lifting equipment, such as cranes or forklifts, to lift and move the switchgear to the installation site. Make sure the lifting equipment is capable of handling the weight of the switchgear. During the lifting and moving process, take precautions to prevent any damage to the switchgear.
Alignment and Fixing: Place the switchgear on the foundation and align it with the anchor bolts. Insert the anchor bolts through the installation holes on the switchgear and tighten the nuts to fix the switchgear to the foundation. Use a spirit level to check the verticality of the switchgear and make any necessary adjustments.

4. Electrical Connections

Electrical connections are a critical part of the switchgear installation process.

Cable Installation: Install the power cables and control cables according to the electrical wiring diagram provided in the installation manual. Make sure the cables are properly sized and rated for the electrical load. Use cable glands to secure the cables to the switchgear and prevent any moisture or dust from entering.
Busbar Connection: Connect the busbars inside the switchgear. The busbars should be clean and free from any oxidation or damage. Use appropriate busbar connectors to ensure a good electrical connection. Tighten the bolts on the busbar connectors to the specified torque to prevent any loose connections.
Circuit Breaker and Contactor Installation: Install the circuit breakers and contactors inside the switchgear. Make sure they are properly aligned and fixed. Connect the electrical terminals of the circuit breakers and contactors to the busbars and cables according to the wiring diagram.
Grounding Connection: Establish a proper grounding connection for the switchgear. Connect the grounding bar inside the switchgear to the grounding system of the installation site. The grounding connection should be reliable to ensure the safety of the switchgear and the personnel operating it.

5. Testing and Commissioning

After the installation and electrical connections are completed, it is necessary to conduct a series of tests and commissioning to ensure the proper functioning of the switchgear.

Insulation Resistance Test: Use an insulation resistance tester to measure the insulation resistance of the switchgear. The insulation resistance should meet the specified requirements. If the insulation resistance is too low, it may indicate a problem with the insulation of the switchgear.
Circuit Breaker and Contactor Testing: Test the operation of the circuit breakers and contactors. Check the opening and closing times, contact resistance, and tripping characteristics of the circuit breakers. Ensure that the contactors operate smoothly and make good electrical contact.
Protection Relay Testing: Test the protection relays installed in the switchgear. Verify that the relays can accurately detect faults and send out appropriate tripping signals. Adjust the settings of the protection relays according to the requirements of the electrical system.
Functional Testing: Conduct a comprehensive functional test of the switchgear. Simulate various operating conditions and faults to check the performance of the switchgear. Ensure that the switchgear can operate normally under different loads and fault conditions.

6. Final Inspection and Handover

After the testing and commissioning are completed, conduct a final inspection of the switchgear.

Visual Inspection: Inspect the appearance of the switchgear for any signs of damage or loose connections. Check the wiring and cable connections to ensure they are secure.
Documentation Review: Review all the installation and testing records to ensure they are complete and accurate. Provide the customer with all the necessary documentation, including the installation manual, test reports, and maintenance instructions.
Handover: Hand over the switchgear to the customer after the final inspection is passed. Provide the customer with training on the operation and maintenance of the switchgear to ensure they can use it safely and effectively.

MNS Switch Cubicle In conclusion, the installation of fixed type switchgear is a complex process that requires careful planning, proper installation techniques, and thorough testing. As a supplier of fixed type switchgear, we are committed to providing high – quality products and professional installation guidance. If you are interested in our fixed type switchgear or need more information about the installation process, please feel free to contact us for procurement and further discussion.

References

Electrical Installation Standards and Guidelines.
Switchgear Manufacturer’s Installation Manuals.

Zhejiang Dongyu Electric Co., Ltd.
As one of the most professional fixed type switchgear manufacturers and suppliers in China, we’re featured by quality products and good price. Please rest assured to buy customized fixed type switchgear made in China here from our factory. Also, pricelist is available.
Address: No.11 Baoqiao Road, Huaxi Industrial Park, Changxing County, Zhejiang Province
E-mail: dongyu178@163.com
WebSite: https://www.dongyuswitch.com/