Euro Line Verbundsatz TCC Rack, EV2B-TCC-4HE-18Y-40P o.E.

Frequency-regulated Bitzer power racks work using two semi-hermetic Bitzer compressors. These units have been specially developed for use in refrigeration systems with variable refrigeration demand. The use of a Power Electronics Yaskawa frequency converter allows compressors to run continuously while optimally adjusting cooling performance to the current conditions. The frequency converter operates one or both compressors according to the current power requirements. This achieves a very wide power band width. In the event of a failure of the frequency converter, a low pressure switch and manual switch can be used to activate emergency mode operation with a single compressor. These devices are therefore an energy-efficient and space-saving alternative to power racks with multiple compressors.

The Bitzer compressor units are available in seven different power classes. They are designed for use with refrigerant R134a in the normal cooling range. Other refrigerants and operating conditions on request. Cooling power is regulated depending on the intake pressure. A Power Electronics Yaskawa frequency converter is used in combination with a pressure transmitter to control the power rack. This is mounted and thermally decoupled on the intake side and records the actual intake pressure value. The power rack controller regulates the cooling power of the rack so that the target value is achieved as closely as possible.

The frequency converter is included with the control box. Configuration is input via a keyboard. The frequency convertor comes pre-configured. Only a small number of parameters must be changed to adjust the target value. The control box is mounted to the frame and wired. Alternatively it can be delivered loose. All components are mounted to a tough riveted steel profile frame.
All parts of the frame have a double coating. The power rack stands on the supplied rubber-bonded metal base. Refrigeration lines are conveniently grouped together at the rear. Devices are fitted with an oil separator and reservoir as standard in order to ensure reliable operation, even during a temporary minimal cooling load on the system. The compressors feature electronic oil level regulators.