FEATURE POWER ELECTRONICS
Power supplies – the building block for every application
Recent introductions demonstrate Powersolve’s ability to meet practically every power supply requirement S
ince it was established more than 30 years ago, Powersolve has supplied
millions of power conversion products to customers in virtually every sector of industry. Recent introductions include the TSP Series of single output 72 to 600W DIN-rail power supplies. These devices are designed for use in a wide variety of industrial applications, particularly those involving difficult or hazardous environments. According to the company, these new power supplies are ideal for powering sensitive loads in industrial process control systems, machine tools and other demanding industrial applications. There are 12 models in the TSP Series
featuring regulated, adjustable single output voltages of 12, 24, 36 or 48VDC, with output currents up to 25A. These DIN-rail power supplies are specified for industrial operating temperatures from –25°C to 70°C with convection cooling and over-temperature protection as standard. Other features include power good signal, over voltage protection and remote on/off. The TSP Series comes with a Worldwide safety approval package. A range of complementary DIN-rail function modules increase the range of applications for these power supplies. A redundancy module provides true current sharing in parallel operation while a battery controller module allows the user to configure a highly reliable UPS system for 12, 24 and 48VDC. Here, Powersolve offers a wide variety of battery packs. Another module is designed to protect against short-time AC mains loss. This buffer module needs no battery and is maintenance free. The SM500-CP-50 programmable power supply provides up to 15kW from a compact 3U high unit. It features a constant power, bi-directional output and a number of features designed to provide users with an easy to use, flexible power source.
THE SM500-CP-50 According to the company, a bi- directional output provides the same power characteristic in the second quadrant for the full 15kW while the flexible constant power output
22 MAY 2018 | ELECTRONICS
Other interfaces such as isolated analogue programming and master/slave are currently in development. Temperature controlled fans guarantee silent operation.
characteristic means the lower the voltage, the higher the current. For example, 166V: -90 to +90A and 500V: - 30 to +30A. Voltage and positive current and negative current can all be adjusted from zero to maximum. The unit will also work from practically any worldwide AC mains input. The SM500-CP-50 can operate like an
electronic load. Unlike earlier Delta Elektronika power supplies which used an optional power sink that could absorb up to 10% of the total energy dissipated via internal heatsinks, the new unit can sink up to 100% of the power without the need to dissipate large amounts of energy. The power supply is designed to be quick to respond to load changes particularly when it comes to changing from positive to negative current and vice versa. The unit uses digital control to adapt regulation to match the type of load. The output voltage of the SM500-CP-50 recovers in just 200µs after a load change from +90 to -90A and -90 to +90A. The power supply’s standard interface is Ethernet with a built-in sequencer. Other interfaces available include digital I/O, serial – RS232, RS485, RS422 and USB.
Figure 1: Powersolve - PR-TSP
ENCAPSULATED TO MEET IP67 The PS12MK, PS20MK and PS36MK Series are switch mode power supplies that provide 10 to 36W from the universal input range of 90 to 264VAC. Output voltages across the 15 models in the PS12MK, PS20MK and PS36MK Series range from 5 to 24VDC. These are plastic encapsulated AC-DC converters that offer protection to IP67 and are therefore suitable for use where the ingress of liquid and dust need to be avoided.
The PFD Series units are “no break”
power systems designed to provide constant DC power without interruption. These are 1U, 19in rack mount units designed to provide 12, 24 or 48VDC from an input voltage of 180 to 264VAC (50/60Hz). Models in the PFD Series provide either 150W or 300W output power and can be used as both a power supply and a charging device. Batteries are external and capacity depends on output load power required and length of hold up time in the event of a power failure. The batteries can also be hot-swapped. Every unit incorporates an intelligent interface which allows the user to monitor the battery condition, input
Figure 2: PFD Series
power condition and load status via an LED-based front panel display. Monitoring is achieved via dry contacts, RS232, USB and the optional SNMP Card which can allow computer monitoring even from a mobile phone. For protection, the unit’s multi-channel outputs use independent fuses. Rapid response short-circuit protection limits the maximum output current which in turn prevents the fuse from blowing. Models in the PFD Series meet the
requirements of EN60950, measure 1U x 19in x 250mm deep and weigh 3.5kg (150W) and 4.5kg (300W).
Powersolve
www.powersolve.co.uk T: 01635 521858
/ ELECTRONICS
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