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In modern power systems, transformateurs de puissance are the core equipment for voltage conversion and energy transmission. Its stable operation directly determines the efficiency and reliability of transformers and power grids, and is the power in a transformer. The key to safe and efficient transmission is between the generation, transmission, and distribution stages. Whether it is power stations, factories, public buildings, or urban and rural power grid projects, the correct installation and commissioning of transformateurs de puissance are crucial to ensuring their long-term stable operation, avoiding faults, and reducing energy losses.
As a leading manufacturer of high- and low-voltage electrical equipment that strictly follows the IEC, GB/T, and ISO9001 standards, Chuanli specializes in R&D, production, and supply of high-quality transformateur de puissance products, including dry-type transformers, oil-immersed transformers, and customized solutions. With advanced intelligent factory equipment and strict quality control process, Chuanli transformateur de puissance achieves 98.5 % energy efficiency (dry type model) and low noise operation, which is widely used in power stations, mines, subways, public building and other scenarios.
Sufficient pre-installation preparation and scientific site selection are the basis for the smooth progress and stable operation of transformateur de puissance installation, which needs to comprehensively consider environmental conditions, foundation requirements, and compliance.
Environmental adaptability: The site should have good ventilation to ensure that the transformer can dissipate heat and avoid overheating. Although the Chuanli transformateur de puissance is designed to operate in a wide temperature range, the installation environment should be far away from large amounts of dust, corrosive gases, and water accumulation. When installed outdoors, it is necessary to protect against extreme weather (heavy rain, snow, strong wind).
Space requirement: There should be sufficient maintenance space around the transformer – generally at least 1-1. 5 meters away from the wall or other equipment to facilitate daily inspection and maintenance. For large-capacity transformers, additional consideration should be given to the cooling system and the space for component replacement.
Basic stability: The installation base should be flat and solid, and able to bear the weight of the transformer (the weight of the transformateur de puissance from hundreds of kilograms to several tons). The foundation is cast in reinforced concrete to minimize vibration during operation, which helps to reduce noise and extend the service life of the equipment.
Qualification handling: Before installation, all necessary permits and approvals must be applied for to the local power regulatory authority to ensure compliance with safety and environmental protection standards.
Technical document reading: Familiarize yourself with the product manual, installation guide, and technical parameters of Chuanli products, including rated voltage, capacity, cooling method, etc. Wiring diagrams, etc., to confirm that the specifications of the transformer match the actual engineering requirements (such as the compact substation transformer used by Chuanli supports 11kV- 40.5kV input and 400V output).
Special tools: Prepare lifting equipment that matches the weight of the transformer, a torque wrench for bolt tightening, an insulation tester, a leak detection tool, etc.
Auxiliary materials: high-quality cables, connectors, insulating materials, and cooling oil (for oil-immersed transformers) are selected. All materials must meet IEC standards and the requirements recommended by Chuanli.
| Type de transformateur | Ventilation Requirements | Maintenance Space | Foundation Load Capacity | Operating Temperature Range |
| Dry-type (≤4000kVA) | Natural or forced ventilation | ≥1 meter surrounding area | ≥2.5 times transformer weight | -20°C to +40°C |
| Oil-immersed (35kV) | Natural ventilation (ONAN) | ≥1.5 meters surrounding area | ≥3 times transformer weight | -30°C to +45°C |
| Compact Substation Transformer | Integrated ventilation system | ≥0.8 meters surrounding area | ≥2 times the substation weight | -40°C to +70°C |
The core installation and commissioning process of transformateurs de puissance covers transportation and storage, component assembly, wiring test, and other links, and each step must strictly follow the manufacturer’s guidelines and industry standards to ensure safety and performance.
Transportation protection: The transformer should be firmly fixed during transportation to prevent collision, vibration, or tilting. Chuanli provides customized anti-vibration packaging and wooden boxes for its transformateurs de puissance, marking lifting points and anti-moisture labels, and supports sea and air transport. Avoid severe jolts during transportation to protect the internal winding and components from damage.
Storage conditions: If not installed, the transformer should be stored in a dry, ventilated, and clean warehouse. Oil-immersed transformers need to ensure that the oil level is normal and the oil tank is well sealed to prevent moisture from entering; Dry transformers need to be covered with waterproof and dustproof covers to avoid damage to the insulation layer.
Inspection of the box: Carefully open the box before assembly to check whether the transformer and components (tubes, heat sinks, fans, etc.) are damaged, deformed, or missing, and verify that all components are consistent with the delivery list.
Assembly operation: Assemble the parts according to the installation manual of Chuanli, for example, install the radiator and cooling fan of the oil-immersed transformer to ensure that the connection is firm and the cooling channel is unobstructed; The dry-type transformer is installed with silicon-coated tubing (which can withstand 70kV impact voltage) to ensure insulation performance.
Torque calibration: Use a torque wrench to tighten bolts and connectors to the specified torque value to avoid overheating or vibration caused by loose connections during operation.
Wiring specification: According to the wiring diagram provided by Chuanli, connect the primary and secondary windings with the power line transformer to ensure correct phase sequence and tight connection, and avoid poor contact causing overheating or arcing.
Cable selection: Select a cable with a cross-sectional area that matches the insulation grade, suitable for the rated current of the transformer. For example, the 630A – 4000A isolation switch from Chuanli needs to be matched with a cable with the corresponding carrying capacity.
Short-circuit prevention measures: Wiring should be neat and orderly, avoiding cross-over and overlapping to prevent short-circuit; Install cable clamps to secure the wires and reduce stress at the connection points.
Oil leakage test (oil-immersed transformer): Perform a 24-hour static leakage test after filling with oil to check whether there is any oil leakage in the oil tank, valves, and pipe connections. Use a leak detection instrument or visual inspection to ensure there is no leakage.
Gas leakage test (dry-type transformer): Dry-type transformers with forced ventilation systems need to be tested for gas tightness to ensure that there is no gas leakage in the cooling air channel, which can affect heat dissipation efficiency.
Electrical testing is the key to verifying the performance and safety of transformateurs de puissance, and all tests must meet the IEC standards and quality requirements of Chuanli:
Test de résistance d'isolation : Use a megohmmeter to measure the insulation resistance between windings and between windings and the ground, to ensure that it meets the specified value (medium-voltage transformers are generally ≥100M Ω).
Pressure test: Perform a high-voltage pressure test to test the ability of the insulating layer to withstand overvoltage, and ensure there is no breakdown phenomenon.
Local discharge test: Ensure local discharge < 5pC, indicating good insulation integrity and reducing the risk of insulation failure.
Transform ratio test: Verify the transform ratio of the primary and secondary windings to ensure accurate voltage conversion.
Integrated sensor installation: Install temperature, current, and voltage sensors according to requirements. Real-time monitoring of power in the transformer and operating parameters.
SCADA system connection: Connect the transformer to the data acquisition and monitoring system to realize remote monitoring and control. The hydraulic transformateur de puissance supports SCADA compatibility and can complete load management, fault detection, and data analysis.
Alarm system configuration: Set the alarm threshold of parameters such as temperature, oil level (oil-immersed), current, etc. When the parameters exceed the threshold, the system will automatically send an alarm signal to remind the operator to deal with it in time.
After the installation is completed, a comprehensive commissioning inspection and personnel training shall be carried out to ensure the safe and efficient operation of the transformer.
Protection relay calibration: Calibrate overcurrent, overvoltage, undervoltage, and temperature protection relays to ensure a quick and accurate response in case of faults. The measurement accuracy of the Chuanli microcomputer protection device reaches 0.2%, and the response time is less than 20ms.
Circuit breaker compatibility test: Test the compatibility of the transformer and vacuum circuit breaker to ensure quick breaking (less than 50ms) when a short circuit occurs to minimize damage.
Unloaded test: The transformer runs unloaded for 2-4 hours, monitoring the unloaded current, temperature rise, and noise to ensure that the temperature rise does not exceed the limit (generally ≤80K for dry-type transformers) and the noise is < 65dB.
Load test: Gradually apply load to 100% rated load, monitor load current, voltage drop, temperature, and other parameters, and verify that the transformer efficiency meets the rated value (dry type transformer of Chuangli reaches 98.5%).
Familiarity with equipment: Explain the structure, working principle, and key parameters of transformers to operators, and introduce common faults and troubleshooting methods in combination with the characteristics of products from Chuanli.
Safety operation training: Emphasize safety operation procedures, such as starting and stopping steps, locking and posting measures, and maintenance notes, to ensure that operators understand the risks of electric shock and arc flash.
Document transfer: Provide product manuals, installation records, test reports, and maintenance schedules to operators for easy reference in the future.
| Inspection Items | Test Methods | Acceptance Criteria |
| Résistance de l'isolation | Megohmmeter Measurement | ≥100MΩ |
| Withstand Voltage Test | 75kV/1 minute | No breakdown, no discharge |
| Partial Discharge | Partial Discharge Detector | <5pC |
| Open Load Current | Clamp-on Ammeter | ≤3% of rated current |
| Full Load Temperature Rise | Temperature Sensor | Dry type ≤80K; Oil immersion type ≤65K |
| Noise | Sound Level Meter | <65dB |
Long-term monitoring and regular maintenance are the keys to extending the service life of transformateurs de puissance and ensuring stable operation.
Daily inspection: Check the appearance, temperature, noise, and oil level (in oil-immersed type) of the transformer every day, and record the operating parameters such as voltage, current, and temperature.
Regular maintenance: Perform comprehensive maintenance every 6-12 months, including cleaning the transformer surface and cooling system, tightening loose connections, and replacing aging insulating materials. Oil-immersed transformers need to be analyzed for insulation oil regularly, monitor impurities, moisture, and acidity, and purified or replaced in case of abnormalities.
Component replacement: Replace worn-out components (fans, sensors, seals, etc.) in a timely manner. Chuanli provides continuous spare parts supply, even for iterative products, to ensure maintenance is not affected.
Fault diagnosis: Use the SCADA system and monitoring data to quickly diagnose faults. Common faults include overheating, insulation aging, oil leakage, etc., refer to the fault diagnosis guide of Chuanli to solve them efficiently.
Emergency measures: Formulate an emergency response plan for major faults (short circuit, oil leakage), equip fire-fighting equipment near the transformer, and train operators on emergency shutdown procedures.
Load management: Optimize transformer load distribution based on monitoring data to avoid long-term overload operation and prevent energy efficiency decline and service life shortening.
Cooling system optimization: Regularly check the operation status of the cooling system. For transformers with ONAN/ONAF cooling mode, switch the cooling mode according to the load and temperature changes to improve efficiency.
The installation and commissioning of transformateurs de puissance is a systematic project, which needs to strictly follow the technical standards and operation procedures from the preparation before installation to the maintenance after commissioning. As a professional manufacturer, Chuanli provides high-quality transformateur de puissance products with excellent performance (high energy efficiency, low noise, high reliability) and comprehensive technical support, laying a solid foundation for installation and commissioning work.
Through scientific location, standardized installation, comprehensive commissioning inspection, and long-term monitoring maintenance, enterprises can maximize the operating efficiency and service life of transformateurs de puissance and ensure the safe and stable operation of transformers and power grids. Chuanli will continue to adhere to the concept of quality first and customer first, provide customers with high-quality products and professional solutions, and help the global power industry develop.
Q1: How long is the delivery cycle of Chuanli Power Transformer?
A1 : Standard model 7-15 days; Customized model 20-35 days (confirmed by DFM).
Q2: Does Chuanli Power Transformer support project customization?
A2 : Yes, we can provide customized solutions based on voltage, capacity, and application scenarios.
Q3: How long is the service life of a hydraulic power transformer?
A3 : Under normal maintenance and operation, the service life can reach 15-25 years.
Q4: Does Chuali Power Transformer support remote monitoring?
A4 : Support, compatible with SCADA system, load management, and fault detection can be carried out remotely.
Q5: What kind of maintenance does the dry-type power transformer need?
A5 : Regular cleaning, insulation inspection, sensor calibration, no oil-related maintenance required.
