Attribute
Product Description
Isolated phase enclosed bus duct is a kind of high-current transmission device developed by our company. The Isolated phase conductors have separate housings and are individually insulated and supported. It has high safety and reliability in power transmission, strong anti-short circuit performance, and has a heat-safe design to reduce the temperature rise around the enclosed busbar.It is extensively applied in generator main lead-out wire loop and power station Service/auxiliary Transformers .
Product Features
■ Both the enclosure and all the conductor of isolated phase enclosed busduct are all welded by aluminum plate, providing high conductivity, corrosion-free operation. The conductor is supported by tripost insulator and the pressure is evenly applied on the insulators with more stability being ensured.
■ Busduct can be effectively prevented from the grounding fault caused by moisture, dust and external factors under the protection of enclosure. Short-circuit will be avoided between phases because of isolated phase enclosed structure.
■ When the busbar conductor is electrically conductive, an induced current is generated in the outer casing in the opposite direction and the value is almost equal to the current in the conductor. The magnetic field generated by the current and the induced magnetic field of the conductor cancel each other out, so that the residual magnetic field outside the shell is greatly reduced, so that the steel structure around the busbar is made. There is almost no heat loss or temperature rise in the steel in the concrete.
■ At the joint of the equipment, insulating rubber bellows are applied at the enclosure for electrical isolation and avoid the impact of induced current.
■ The conductors inside are all connected with flexible braided straps to eliminate the vibration of connected equipment.
■ Current transformer can be set up according to the requirement for the purpose of measurement and protection.
■ Through the hydrogen measurement, temperature measurement, and humidity measurement devices, the online temperature, humidity, and hydrogen leakage of the busbar body, the outer casing, and the internal environment of the busbar are intelligently displayed. By controlling the micro-positive pressure equipment, the hot air maintenance device can prevent external dust and moisture from entering the busbar, effectively improve the safety index of the whole set of busbars, and ensure the safety and reliability of the busbar system.
Busduct diagram for installation
Main technical parameters
| Rated voltage(kV) | Rated current(A) | BL(kV) | Dimensions(mm) | ||||
| Enclosure φB | ConductorφA | Distance between phases S | Height H | Weight Kg'm | |||
| ＜35 | ＜2000 | 75/150 | φ650 | φ150 | ≥900 | 490 | 213 |
| ＜35 | ＜2500 | 75/150 | φ700 | φ150 | ≥950 | 515 | 222 |
| ＜35 | ＜4500 | 75/150 | φ750 | φ200 | ≥1000 | 540 | 252 |
| ＜35 | 5000-8000 | 75/150 | φ750 | φ300 | ≥1000 | 540 | 283 |
| ＜35 | 8000-9000 | 75/150 | φ850 | φ350 | ≥1100 | 590 | 316 |
| ＜35 | 9000-10000 | 75/150 | φ900 | φ400 | ≥1150 | 615 | 367 |
| ＜35 | 10000-14000 | 75/150 | φ1050 | φ500 | ≥1300 | 690 | 480 |
| ＜35 | 20000-24000 | 75/150 | φ1450 | φ900 | ≥1800 | 890 | 845 |
| ＜35 | 24000-26000 | 75/150 | φ1500 | φ950 | ≥1900 | 915 | 890 |
| ＜35 | 27000-30000 | 100/185 | φ1650 | φ1000 | ≥2000 | 990 | 980 |
Application
The Isolated phase enclosed busbar is a large- current transmission device widely used in 50MW and above generator lead-out circuits and factory branch circuits .
Package and loading:
We ship the cargo with steel pallet or steel frame which is suitable for international sea transportation and could well protect the cargo.
Welcome you to contact us freely for ordering and looking forward to cooperation with you.
