In September 2006, Beijing Pengfa Xinguang Power Electronic Technology Co., Ltd. and Joy Global (Baotou) Mining Equipment Co., Ltd. signed a contract to build a 1500kVA feedback AC drive test bench project. The project plan consists of the tested motor as the drive motor, asynchronous variable frequency motor as the load motor, generating load torque; the two motors constitute the energy feedback system, and the system power supply provides the test system with energy loss. The test rig system is currently delivered to users. This is the international recognition of the technical strength of Beijing Pengfa Xinguang Power Electronics Technology Co., Ltd. and a milestone in the successful international cooperation.
Basic parameters:
· Rated capacity: 1500kVA
· System supply voltage: AC 690V
· Control, test voltage: AC 220V
· Rated frequency: 50Hz
· Speed ​​range: 0~1500r/min
· Overload capacity: 1.5 times rated torque (duration of 5 minutes)
· Torque response time: <10mS
· Cooling method: air-cooled
· Application: Motor Test Bench
This is a silver-coated flat mirror. From visible light to infrared, good reflectivity can be obtained in a wide spectral range. A protective film is plated on the silver film to prevent oxidation and have a long service life.
A protective film is plated on the silver film to prevent oxidation and have a long service life.
Compared with aluminum mirrors, higher reflectivity can be obtained from visible light to infrared wavelengths.
Compared with the dielectric film, the reflectivity is less affected by the incident angle and can be used for various incident angles.
It is coated with a protective film and it is not easy to scratch when wiped with a cloth.
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