SIEMENS LAUNCHES EXTENSION TO SINGLE PHASE POWER SUPPLIES

Siemens Industry has extended its range of single-phase power supplies suitable for all industrial environments.

The SITOP smart product family has seen the introduction of three single-phase 24 V power supplies with rated output voltages of 2.5 A, 5 A and 10 A, as well as two 12 V power supplies with 7 A and 14 A.

The output voltage of the new PSU100S power supplies is adjustable over a wide range from 24 to 28 V with the 24 V power supplies and from 12 to 15.5 V with the 12 V models. All devices can supply 1.5 times the rated current for five seconds per minute, to ensure problem-free starting for loads that draw a high current. The 24 V versions also supply 120 percent rated current at ambient temperatures up to 45oC.

The power supplies of the SITOP smart product line are designed for standard requirements in automated machines and plants, while the new single-phase SITOP PSU100S power supplies also feature a signaling contact for evaluating the operating status “Output voltage OK”.

With widths of only 32.5 mm (24 V/ 2.5 A), 50 mm (24 V/ 5 A and 12 V/ 7 A) and 70 mm (24 V/ 10 A and 12 V/ 14 A) and no sideways clearance requirements, the power supplies require less space on the mounting rail, providing increased flexibility and ensuring they are suited to a range of environments. These slim power supplies feature automatic range switching for connection to 120 V and 230 V supply systems worldwide.

A radio suppression level of Class B and line harmonic limiting also permit use on the public low-voltage grid. Certification for GL (Germanische Lloyd) for shipbuilding and ATEX (Atmosphère Explosive) for hazardous environments ensure that the power supplies can be used universally.

Joanne Banks, Siemens Industry, comments: “The expansion of the single phase power supplies for all environments offers users increased operational efficiency. Importantly, the range has been designed to save space in the plant which allows operators to have greater flexibility over design of control systems.”

The new Siemens power supplies can be used at ambient temperatures from -10oC and +70oC and offer a high degree of efficiency of up to 90 percent, which ensures only minimal heat generation in the control cabinet. For protection against faults in the network or in the output circuit, SITOP add-on modules offer enhanced protection for the 24 V power supplies, for example, through conversion to an uninterruptible DC power supply or for selectivity in 24 V feeders.

Paul Addison
Siemens
07808 823 011
paul.addison@siemens.com