As a reputable supplier of low voltage switchgear, I’ve witnessed firsthand the diverse challenges and queries that customers face. One of the most frequently asked questions revolves around the storage requirements for low voltage switchgear. In this blog post, I’ll share my insights based on years of experience in the industry, aiming to provide a comprehensive guide for proper storage. Low Voltage Switchgear
1. Environmental Conditions
Temperature
The temperature of the storage environment plays a crucial role in maintaining the integrity of low voltage switchgear. Most switchgear is designed to operate within a specific temperature range, typically from -5°C to 40°C. During storage, it’s essential to keep the temperature within this range as closely as possible.
Extreme cold can cause the materials in the switchgear to become brittle. For example, plastics and rubber components may crack, leading to insulation failures. On the other hand, high temperatures can accelerate the aging process of insulation materials, reducing their dielectric strength and increasing the risk of electrical breakdown.
To achieve and maintain the appropriate temperature, climate – controlled storage facilities are highly recommended. These facilities can be equipped with heating, ventilation, and air – conditioning (HVAC) systems to regulate the temperature effectively. If a climate – controlled environment is not feasible, regular temperature monitoring should be carried out, and appropriate measures should be taken to minimize temperature fluctuations, such as using insulation covers.
Humidity
Humidity is another critical environmental factor. Excessive humidity can lead to moisture condensation on the surface of the switchgear components. Moisture can cause corrosion of metal parts, such as circuit breakers, busbars, and connection terminals. This corrosion not only weakens the mechanical strength of the components but also increases the contact resistance, which can result in overheating during operation.
The relative humidity in the storage area should be kept below 75%. Dehumidifiers can be installed in the storage facility to reduce the humidity level. Additionally, proper ventilation is necessary to prevent the accumulation of humid air. The stored switchgear should also be placed on pallets or racks to avoid direct contact with the floor, which may be a source of moisture.
Dust and Contamination
Dust and other contaminants can settle on the switchgear components and interfere with their normal operation. Dust can accumulate on the insulation surfaces, reducing the insulation performance. In addition, conductive dust can cause short – circuits if it gets into the electrical connections.
The storage area should be kept clean and free of dust. Regular cleaning of the storage facility, including the floors, walls, and shelves, is necessary. Air filtration systems can be installed to reduce the amount of dust in the air. The switchgear should be covered with protective covers during storage to prevent dust from settling on it.
2. Storage Location
Indoor Storage
Indoor storage is generally preferred for low voltage switchgear. It provides better protection against environmental factors such as rain, wind, and sunlight. Inside a building, the temperature and humidity can be more easily controlled compared to outdoor storage.
When storing switchgear indoors, it should be placed in a well – ventilated area. Proper ventilation helps to dissipate heat and prevent the accumulation of moisture and gases. The storage area should also be away from sources of vibration, such as heavy machinery or generators, as vibration can loosen the electrical connections and mechanical fasteners in the switchgear.
Outdoor Storage
In some cases, outdoor storage may be unavoidable. If outdoor storage is required, the switchgear should be stored in a shaded area to protect it from direct sunlight. Sunlight can cause the temperature of the switchgear to rise significantly, which is detrimental to its components.
The switchgear should be placed on a raised platform or pallet to prevent water from pooling around it during rain. A waterproof cover should be used to protect it from rain and snow. However, it’s important to ensure that the cover allows for some ventilation to prevent moisture buildup inside the cover.
3. Packaging and Handling
Packaging
Proper packaging is essential for protecting the switchgear during storage. The switchgear should be packed in sturdy, moisture – resistant containers or crates. The packaging should also provide cushioning to protect the components from shock and vibration during handling and transportation.
If the switchgear is equipped with sensitive components, such as electronic control units, additional protective measures, such as anti – static bags or conductive foams, should be used to prevent electrostatic discharge (ESD) damage.
Handling
When handling the switchgear during storage, care must be taken to avoid any physical damage. The switchgear should be lifted using appropriate lifting equipment, such as forklifts or cranes, and the lifting points should be in accordance with the manufacturer’s instructions.
During storage, the switchgear should be stacked in a stable manner. If multiple units are stacked, the weight distribution should be even to prevent the collapse of the stack. Additionally, the switchgear should be stored in a way that allows easy access for inspection and maintenance.
4. Inspection and Maintenance during Storage
Regular Inspection
Even during storage, the switchgear should be inspected regularly. Visual inspections should be carried out to check for any signs of damage, corrosion, or moisture. The electrical connections should be checked to ensure they are tight and free of corrosion.
The functionality of the switchgear components, such as circuit breakers and contactors, should also be tested periodically. This helps to detect any potential problems early and allows for timely repairs or replacements.
Maintenance
If any issues are found during the inspection, appropriate maintenance measures should be taken immediately. Corroded parts should be cleaned or replaced, and loose connections should be tightened. The insulation resistance of the switchgear should be measured periodically to ensure its dielectric performance.
It’s also important to keep a record of all inspections and maintenance activities. This record can be used to track the condition of the switchgear over time and can be useful for predicting future maintenance needs.
5. Long – term Storage Considerations
For long – term storage, additional precautions may be required. The switchgear should be properly preserved to prevent the deterioration of its components. For example, the metal parts can be coated with a protective layer of anti – rust paint or lubricant.
The batteries in the switchgear’s control systems, if any, should be removed and stored separately. They should be charged and maintained according to the manufacturer’s instructions to ensure their performance when the switchgear is put back into service.
In conclusion, meeting the storage requirements for low voltage switchgear is essential for ensuring its performance and reliability when it’s finally put into use. By paying attention to environmental conditions, storage location, packaging, handling, inspection, and maintenance, you can extend the lifespan of the switchgear and avoid potential problems.
Switchgear If you’re in the market for high – quality low voltage switchgear or need more information on storage and maintenance, I encourage you to reach out to us. We’re here to provide you with the best solutions tailored to your specific needs.
References
- "Electrical Equipment Installation and Maintenance Handbook"
- "Low Voltage Switchgear Design and Application Manual"
- Industry standards for low voltage switchgear storage and handling
Deepwill International Technology Development (Jiangsu) Co., Ltd.
Deepwill International Technology Development (Jiangsu) Co., Ltd. is one of the most professional low voltage switchgear manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy low voltage switchgear for sale here from our factory. Contact us for OEM service.
Address: No. 3-3 muyang Road, Hanjiang Economic Development Zone, Yangzhou city, Jiangsu Province, China.
E-mail: deepwill@deep-will.com
WebSite: https://www.deyunelectric.com/
