Application: This product boasts excellent insulation properties, high mechanical strength, resistance to moisture, flame retardancy without pollution, ease of installation, minimal maintenance requirements, long service life, and strong edge loading capacity. It is widely used in important locations such as hospitals, hotels, underground shopping malls, tunnels, subways, underground power stations, offshore oil platforms, laboratories, high-rise buildings, airports, and combined power stations.
Product Usage Conditions:
Altitude: 1,000M and below.
Ambient Temperature: Maximum Temperature: +40°C
Highest daily average temperature: +30°C; Highest annual average temperature: +20°C
Lowest Temperature: -30°C (for outdoor transformers) | Lowest Temperature: -5°C (for indoor transformers)
Relative Humidity: 95% and below
When operating conditions exceed the above requirements, appropriate adjustments should be made to operating parameters (such as output current) and suitable protective measures should be taken to ensure the product's service life and safety reliability.
Product structural characteristics:
Core: The core is made of high-quality cold-rolled oriented silicon steel sheets, featuring a 45°C full oblique seam without punch holes structure; the core surface is coated with a special resin to prevent rust; elastic materials are used between the clamping parts and the core, the coil and the core, as well as between the core and the base to reduce operating noise.
Coils: The low-voltage windings are in double-layer cylindrical or foil design, while the high-voltage windings feature a segmented continuous structure. Both types are wound using F-grade insulation polyester yarn copper wire with glass fiber reinforcement, and the epoxy resin mixture is cast into shape under vacuum conditions. They exhibit excellent electrical properties and mechanical strength, are resistant to short circuits, withstand shocks, moisture, and have certain over-voltage tolerance.
Base: Supplied with foot slot steel or trolley as per customer's requirement.
Terminal Connectors: High-voltage wiring terminals are connected with pre-buried copper nuts; low-voltage wiring features nickel-plated (or tin-plated) copper bars with wiring holes, welded to the coil terminals and secured to brackets with insulating spacers for easy wiring.
Protective Enclosure: IP00 not equipped with an enclosure, suitable for box-type power stations, distribution cabinets, etc.: IP20i with a metal mesh protective enclosure, can prevent foreign objects up to 12mm in size from entering, suitable for indoor installation; IP23i with a louvered protective enclosure, can protect against rain, snow, insects, and is suitable for outdoor use, but the usage capacity should be reduced by 5% when using this type of enclosure.
Cooling: The transformer is typically cooled by air natural (AN), allowing for continuous output of 100% rated capacity. Upon customer requirement, a forced air cooling (AF) system can be configured; with AF cooling, the transformer's output capacity can be increased by up to 30%.
Temperature Control: Equipped with an automatic temperature control protection system; features such as temperature display, circulation detection, fan start/stop, over-temperature alarm, circuit breaker, and computer communication interface can be achieved according to customer requirements.
