RH28M-2DK.3F.1R 126387 ZIEHL-ABEGG

Q1: What type of fan is the ZIEHL-ABEGG RH28M-2DK.3F.1R 126387, and what specific design features does its impeller have?
A1: The RH28M-2DK.3F.1R is a centrifugal fan. Its impeller is a single inlet design with backward curved blades, and it is made of aluminium with an unpainted finish. This impeller design is typically chosen for efficient airflow generation and pressure handling, making it suitable for applications where controlled air movement is required.

Q2: What are the rated electrical parameters of the RH28M-2DK.3F.1R 126387, and how do they vary with voltage and frequency?
A2: The fan has rated values for two main scenarios: For 3~400V ±10% (Y connection) at 50Hz, it operates with a power input (P1) of 0.53kW, current of 0.95A, speed of 2750 rpm, power factor (COSY) of 0.81, and a maximum temperature tolerance of 70°C. For 3~460V ±10% (Y connection) at 60Hz, the parameters change to 0.86kW power input, 1.25A current, 3220 rpm speed, 0.87 power factor, and 50°C maximum temperature. These variations ensure compatibility with different regional power systems.

Q3: What are the key installation and operational specifications of RH28M-2DK.3F.1R 126387, such as operating temperature range, installation position, and motor protection?
A3: The fan has a minimum operating temperature of -40°C, allowing it to function in cold environments. Its installation position is specified as H/Vu (horizontal/vertical upright). For motor protection, it is equipped with a thermal contact to prevent overheating. Additionally, all attaching parts are secured with Loctite to ensure stability during operation, and it features ball bearings with long-time lubrication for extended service life.

Q4: What are the certification, safety, and quality standards associated with RH28M-2DK.3F.1R 126387?
A4: The fan holds UL/CSA certification under the label MK092-2DK.10.U and is recognized as a motor-recognized component. Its type of protection is IP10, indicating it is protected against solid objects larger than 50mm. The motor has a thermal class of 155, meaning it can withstand sustained temperatures up to 155°C. It also meets balancing standards of 6.3, ensuring smooth operation with minimal vibration.

Q5: What is the intended field of application for the ZIEHL-ABEGG RH28M-2DK.3F.1R 126387, and what features make it suitable for this use case?
A5: This fan is specifically conceived for individual application in railways. Several features make it suitable for this context: its ability to operate in extreme temperatures (down to -40°C), durable ball bearings with long-time lubrication for reliable performance in high-vibration railway environments, thermal protection to handle varying operational loads, and secure component attachment with Loctite to withstand mechanical stress during transit. Additionally, its efficiency (with ErP data showing ηstatA at 48.7% and meeting target efficiency standards) ensures energy-efficient operation in railway systems.