Project background
The hospital’s equipment was tested, and analysis of the test data revealed that the THDi generated by accelerators, X-ray machines, and gastrointestinal machines was approximately 50 %—60 %; CT (computed tomography), MRI, and DSA (digital subtraction angiography) were approximately 30%; electronic testing equipment and operating rooms were between 10% and 15%; and frequency conversion equipment was approximately 35%.
Harmonic solution
Two transformers are on site, each of which needs to be equipped with a 150A active power filter device.
Equipment Selection: Active Power Filter (APF)
Equipment model: CoEpo APF/150-0.4-D*2
Governance method: local treatment
Installation capacity: 300A
Installation method: rack type
Installation location: Power distribution room
Effect
Two 150A active power filters can effectively control the 3rd, 5th, 7th, and 11th order current harmonics.
Active power filters have a fast response speed, full compensation response speed ≤10ms, harmonic compensation capacity of 2~50 times, and flexible configuration. According to the actual power quality status of the system, the control priority can be set to maximize the module utilization.
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