Modular DC-AC inverter series is versatile
18 August 2020
The Cotek Systems’ SR-1600-Plus inverter series is now available from Relec Electronics.
It features AC line conditioning and Modbus communication in diverse applications, from military and satellite to renewable energy and telecoms/datacoms.
The modular design of the SR-1600-Plus Series of DC-AC inverters makes the units versatile and scalable. The series is made up of 1600VA inverter modules for either 24V or 48V inputs, a bespoke 2U subrack and a system controller. There are also options for remote control and maintenance bypass switches.
The inverters have a pure Sine wave output in both AC and DC mode and 89-91% efficiency in DC-AC mode. They also provide line conditioning of the AC input supply, making them particularly suitable for use with modern IT systems where the incoming primary AC supply can be variable or non-sinusoidal, such as from a generator. Power factor is >0.99 and maximum AC efficiency is 95%.
The SR-1600-Plus series can be used as a DC-AC inverter, where the input source is a DC or battery supply, and also as AC mode with DC back up with zero transfer time. The inverters can also power share between the AC and DC sources.
The inverters accept a wide range of AC inputs (minimum ± 20%) and provide a regulated, adjustable AC output (±2%). They can also split the load between the AC and DC input source. This is particularly suitable for renewable energy applications, where DC supply is not available all the time, or to take advantage of low tariff AC sources.
In addition to SNMP (simple network management protocol), an RS-485 Modbus port in the SR-1600-Plus rack allows users to control and monitor key parameters, such as voltage, output power, internal temperature and protection levels.
Although primarily designed for use with a bespoke 2U subrack, the SR-1600-Plus inverters may be used as standalone units. Subracks can be supplied with the SN-1 Plus interface for Ethernet support, or CR-21 for programming at a local level.
The SR-2U2-Plus subrack can accommodate up to four SR-1600-Plus modules, providing between 1600VA and 6400VA outputs, with options for redundancy and upgrades.
The modular system is scalable with up to eight subracks, or 32 modules connected in parallel capable of supplying up to 51.2kVA.
Each DC-AC inverter has a footprint of just 105 x 83 x 405mm, operating from a 2U x 509mm subrack.
All units are 100% hot swappable in live systems for uninterrupted operation during maintenance and system upgrades.
The SR-1600-Plus Series by Cotek Systems is available now from Relec Electronics.
Relec Electronics is a specialist in power conversion and display products, representing leading brand names including Mornsun in power conversion alongside Bel Power, Chinfa, Cotek and Premium with key display partners, Digiwise and RockTouch.
Relec’s team of specialist advisers can refine an initial specification for a given application to include bespoke features to meet the needs of a particular design or project.
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