Series U Innovation made in Ger ma ny w w w . s c h a e f e r p o w e r .
1 or 3-Phase Output from 200VA to 45kVA, switchmode Inverters AC or DC AC www.schaeferpower.
Inverters www.schaeferpower.de 1 or 3-Phase Output from 200VA to 45kVA, switchmode from 200 VA to 15 kVA Series IT - Inverters with 1-phase output Page 89 DC/AC Inverters is a combination of a switch mode Inverter and a Transformer at the output. The transformer provides the isolation between input and output and transforms the voltage to the required level.
Series U Inverters www.schaeferpower.de Uninterruptible Power Supply Systems Input VDC 40 – 64 VDC U 5436 U 5438 50 –80 VDC U 5446 U 5448 Cooling Frequency Designation Input / Output VAC Output kVA 80 – 160 VDC Output kVA 160 – 320 VDC Output kVA 1 1.2 2 U 5276 U 5376 U 5476 1 1.6 2.5 115 1.2 U 5256 U 5356 U 5456 1 1.2 2 U 5278 U 5378 U 5478 1 1.6 2.5 230 1.2 U 5258 U 5358 U 5458 4U UPS with 1-phase output Static from Switches 1 to 2.5kVA with 1-phase output from 0.
Options & Accessories www.schaeferpower.de for Switch Mode Units Schaefer offers the industry’s most complete range of input and output voltages, combined with a selection of package style, mounting solutions, options for input and output as well as various possibilities of programming & monitoring. Configuration of model designation: Add the designation of options to the type number of the power supply module, e.g. C 3674-w-dr-eu1.
Options & Accessories www.schaeferpower.de for Switch Mode Units Output Parallel / redundant operation for DC output (details see page 125/126) dd A series diode built into the units output allows paralleling of 2 or more units for redundancy or higher power or battery charging. For control purposes the anode of the diode is also available at the output connector. It cannot be loaded ≥ 0.5A. The sense signal is taken partially from the anode and partially from the load/cathode of the decoupling diode.
Options & Accessories www.schaeferpower.
Options & Accessories www.schaeferpower.de for Switch Mode Units Environment Mechanics t As standard, all of the modules are designed and manufactured for insertion into 19” sub-racks. Higher power modules are already constructed in 19” format. The unit is given additional protection by a heavy coat of varnish on the printed circuit board(s) and on components to achieve 99% RH, non condensing.
Options & Accessories www.schaeferpower.de for Switch Mode & Thyristor-Controlled Systems Control & Monitoring TC 01 Control function analogue or micro-processor-controlled supervision: ■ input voltage ■ output voltage ■ battery circuit ■ ■ UC 03 ground insulation failure over temperature Inhanced controller function The „UC 03“ unit controls and supervises the optimum charging of a battery, up to an entire UPS system.
Technical Notes www.schaeferpower.de Operational Characteristics The following technical notes contain important information about various operating possibilities and circuitries as well as instructions that should be followed during installation etc. For further information please contact the SCHAEFR Team.
Technical Notes www.schaeferpower.de Operational Characteristics AC or DC input DC output inrush current When the module is connected to the input power, the primary capacitors will be charged by a high current pulse. The magnitude of this pulse depends mainly on the input supply system. With a thermistor (temperature dependent resistor) in series with the input, this current pulse can be reduced, as the thermistor has a relatively high value of resistance as long as it is cold.
Technical Notes www.schaeferpower.de Operational Characteristics AC output DC output voltage stabilization Soft start The application of the input power permits the unit to generate an AC output. The output power increases linearly until it reaches its calibrated value. This delay from initial output generation until the nominal value is defined as the soft start. No load operation Inverters require no minimum load for operation within tolerance.
Technical Notes www.schaeferpower.de Mounting & Installation Mounting Connectors H15 Female Connector Airflow to the power supply is preferred to be filtered, below 55°C, an airflow resistivity (pressure drop) of below 20kPa and is required to comply with the EN60950 pollution category II. Diffused thermal energy is required to be exhausted and displaced by air as detailed above. Thermal management is required where the air provided to a power supply complies with the power supply’s design parameters.
Technical Notes www.schaeferpower.de Basic Topologies There are various circuit topologies and the selection depends on the requirements, such as low or high input voltage, low or high output voltage, single or multi output, power rating. The following circuits present our common concepts of power conversion. Push Pull Converter The push pull converter is often used for applications with low input voltage. The switching transistors are alternately conducting with variable pulse-width.
