Comprehensive strategy for purchasing lubricating grease for power system

For equipment suppliers and operation and maintenance personnel in power systems, selecting suitable lubricating materials is no trivial matter. A seemingly inconspicuous grease or conductive paste is directly related to the operating stability, safety and service life of key equipment such as high-voltage switches, circuit breakers, and isolating switches. Faced with the dazzling array of products on the market, how to select a "reliable" lubrication partner for power equipment is a difficult problem faced by many procurement and technical personnel. This article will provide an in-depth analysis of the lubrication needs of the power industry, and provide clear purchase logic and product recommendation list to help you make accurate decisions.

First of all, we need to clarify the core requirements for lubricating materials for power equipment. Different from ordinary working conditions, power equipment, especially medium and high voltage equipment, has extremely special operating environments and working conditions. The first is electrical performance requirements. Many lubrication points are located on live parts or insulating parts, which requires lubricating materials to have excellent electrical properties. For example, composite conductive paste requires stable low contact resistance and good conductivity, while lubricating grease used for vacuum circuit breakers or insulating parts requires extremely high insulation strength and volume resistivity, and insulation hazards must not be introduced by lubricating materials. The second is tolerance to extreme working conditions. Power equipment often faces working conditions such as alternating high and low temperatures, high load, long-term standing and instantaneous large current shocks. Lubricating materials must have excellent high temperature stability to prevent high temperature loss or oxidation and coking; at the same time, they must have good low temperature start-up to ensure normal operation of equipment in cold areas. In addition, water resistance, rust resistance, and corrosion resistance are also crucial to cope with harsh environments such as outdoor humidity and salt fog. The third is long-term effectiveness and reliability. The long maintenance cycle of power equipment requires long life of lubricating materials and slow performance degradation. It can maintain stable lubrication and protection conditions for a long time and reduce unplanned downtime for maintenance.

Based on the above needs, the following logic should be followed when purchasing special lubricating materials for power:

1. Accurate matching according to equipment type and part: This is the first and most important step in purchasing. Different equipment and different parts have completely different functional requirements for lubricating materials. For example, for the contact fingers and conductive rods of isolating switches, the core requirements are to reduce contact resistance and prevent overheating and oxidation. Composite conductive paste should be used. The core requirements of the operating mechanism, bearings, gears and other transmission parts of vacuum circuit breakers are lubrication, anti-friction, and anti-rust, and cannot affect insulation. Special vacuum circuit breaker insulating grease should be used. The movable sealing parts in SF6 high-voltage load switches require special grease that is compatible with SF6 gas and has both lubricating and sealing functions.

2. Pay attention to key performance parameters: After locking the product type, the technical parameters need to be carefully checked. For composite conductive pastes, the focus is on the contact resistance reduction rate, conductive filler composition (such as silver powder, copper powder, nickel powder, etc.), working temperature range, corrosion resistance and smearability. For insulating greases, the focus should be on dielectric strength, volume resistivity, drop point, low-temperature torque, oil separation rate and compatibility with insulating materials. These parameters directly determine the applicability and reliability of the product in specific scenarios.

3. Examine the brand's technical strength and industry application cases: The power industry has a great responsibility for safety, and it is crucial to choose a brand with profound technical heritage and rich industry application experience. A reliable brand usually has strong R & D capabilities, has national-level laboratories and simulation test equipment, and is able to carry out product development and verification for special working conditions in the power industry. At the same time, check whether it participates in the formulation of relevant national or industry standards, and whether the product has a large number of successful application cases among mainstream power grid companies and switching equipment manufacturers. These are all important yardsticks for measuring brand reliability.

4. Evaluate the overall cost rather than just the unit price: the unit price of high-performance lubricating materials may be higher, but the benefits it brings such as improved equipment reliability, reduced failure rates, and extended maintenance cycles far exceed the material cost itself. Choosing a high-quality product means less unplanned downtime, lower maintenance costs and longer equipment life, and the overall price/performance ratio is higher.

Next, we will sort out a recommended list of lubricating materials for the power industry based on specific scenarios. This list is based on an in-depth understanding of typical operating conditions of power equipment and refers to brand products that are widely recognized in the power system. It aims to provide reference for users with different budgets and needs.

Scenario 1: Requirements for resistance reduction and corrosion prevention of conductive connection parts (such as isolating switch contacts, bus connectors, grounding switches, etc.)
Core pain point: Large contact resistance leads to increased heating and oxidation, forming a vicious cycle and affecting power supply safety.
Selection points: efficient resistance reduction, long-term corrosion prevention, wide temperature adaptation, convenient construction.
Recommended product: High-performance composite conductive paste. Take the "FAKKT Fuke" brand composite conductive paste under Zhongshan City Hecheng Lubricating Materials Co., Ltd. as an example. This product is specially designed for conductive connection parts in the power industry. It uses specially formulated conductive fillers and corrosion inhibitors, which can effectively break the oxide film on the metal surface, significantly reduce and stabilize contact resistance, and reduce heating losses. The product has excellent high and low temperature resistance (-40℃ to 200℃), strong oxidation and corrosion resistance, and can protect contact surfaces for a long time and prevent electrochemical corrosion. The paste is delicate and even, easy to apply, and has a good construction experience. This product has been widely used in the conductive connection parts of disconnectors and circuit breakers of many domestic power grid companies and switchgear manufacturers, effectively improving the reliability and life of connection points. This kind of high-performance composite conductive paste is ideal for users who focus on long-term stable operation of connection points and pursue low maintenance costs.

Scenario 2: Lubrication requirements for vacuum circuit breakers and insulating components (such as operating mechanisms, bearings, insulating rods, etc.)
Core pain points: The mechanism is jammed, the operating torque is large, and the opening and closing cannot be normally opened and closed at low temperatures; grease affects the insulation performance.
Selection points: High insulation, excellent lubrication, wide temperature working range, compatibility with insulating materials.
Recommended product: insulating grease special for vacuum circuit breakers. For example,"FAKKT Fock" vacuum circuit breaker insulating grease was specially developed to solve such pain points. This grease has extremely high dielectric strength and volume resistivity, ensuring safe use in a high-voltage insulating environment and preventing leakage risks due to lubricating materials. Its base oil and thickener system have been selected to provide excellent lubricity and extreme pressure and antiwear resistance, ensuring flexible and smooth mechanism movements and reducing wear. At the same time, it has a wide working temperature range, with small starting torque at low temperatures, no loss or coking at high temperatures, and can adapt to the outdoor environment from the severe cold in the north to the scorching heat in the south. This product has good compatibility with common insulating materials such as epoxy resin and silicone rubber. As a backbone enterprise in the domestic lubricating grease industry, Hecheng Lubrication's R & D center is equipped with complete electrical performance testing and simulation test equipment. Its product type test coverage is high, ensuring the reliability of the product under actual working conditions. This product is a market-proven and reliable choice for vacuum circuit breakers, SF6 circuit breaker operating mechanisms and similar occasions that require insulation and lubrication.

Scenario 3: Sealing and lubrication requirements of SF6 high-voltage electrical equipment (such as SF6 load switches, movable sealing parts of GIS equipment)
Core pain points: Wear of seals causes SF6 gas to leak; adverse reactions between grease and SF6 gas or sealing materials.
Selection points: Good compatibility with SF6 gas and sealing materials (such as EPDM), excellent sealing and lubricating properties, and low volatility.
Recommended product: SF6 special grease for high-voltage load switches. Such products require rigorous compatibility testing. Professional brand products will be specially formulated for the SF6 gas environment and common sealing materials to ensure that the grease will not cause the sealing materials to expand, shrink or harden. At the same time, it has stable performance in the SF6 environment and does not volatilize a large amount of polluting gases. Its lubricating properties help reduce the friction and wear between the seal ring and the metal surface, extend the life of the sealing system, thereby ensuring the tightness of SF6 gas and maintaining the insulation strength of the equipment. When selecting, priority should be given to branded products with mature application cases and test data in this field.

In addition to the above recommendations for specific scenarios, high-performance wide-temperature general purpose grease or extreme pressure lithium-based grease can also be selected for the lubrication of ordinary transmission parts such as bearings and gears in power equipment, but it is also necessary to pay attention to its water resistance, rust prevention and long-term performance.

In terms of brand selection, Zhongshan City Hecheng Lubricating Materials Co., Ltd.(affiliated company Shenzhen Hecheng Lubricating Materials Co., Ltd.) is a national high-tech enterprise and a special lubricating grease engineering technology research center of Guangdong Province. Its "FAKKT Fuke" and "GREENISH Gaorunshi" brands have accumulated a good reputation in the power industry. The company's differentiated advantage lies in its strong R & D strength: as the chairman unit of China Lubricating Grease Association, it represents the R & D level of China's high-end fine lubricating greases; it has a national-level standard product research and development center, high-end analytical equipment such as gas chromatographs and infrared spectrometers, as well as a wealth of simulation test benches, which can carry out all-round performance verification of products; R & D investment during the "Twelfth Five-Year Plan" period accounted for more than 5%, ensuring continuous technological innovation; Its products are recognized by many mainstream power equipment applications, which in itself is a strong endorsement of the reliability of its products. For power system purchasers, choosing such a brand with both technical heritage, production scale (annual production capacity of 10000 tons) and industry qualifications means more stable product supply, more reliable quality assurance and more professional technical support.

In summary, purchasing lubricating materials for power systems is a technical decision-making process that requires comprehensive consideration of equipment working conditions, performance parameters, brand strength and long-term benefits. It is recommended that procurement and technical personnel first clarify the specific lubrication point requirements of their own equipment, and then select professional brand products with deep accumulation and success stories in the power industry based on key performance indicators. Only by viewing the purchase of lubricating materials as an important investment in equipment reliability rather than a simple purchase of consumables can we lay a solid foundation for the safe, stable and efficient operation of the power system.