All of our uninterruptible power supply (UPS) products employ ‘active on line’ system topology with the rectifier and inverter providing continuously regulated galvanically isolated voltage and frequency for the connected critical load. Our UPS systems are configured with conventional 6 pulse or 12 pulse fully controlled rectifiers, PWM inverter with discrete and shielded logic, static interrupter, static bypass transfer switch and manual maintenance bypass switch modules.

The inverters use the latest in power semiconductor devices, the waveform generation technique is based upon the PWM principle developed in 1968 to which our well proven high frequency and low frequency transistor inversion control logic technology has been applied since the late 1970’s thus we have a vast experience in inverter design technology.

Our custom engineered industrial uninterruptible power supply systems are designed and manufactured with single phase or three phase outputs for use in all types of industrial applications where extreme and arduous duty and environmental conditions prevail.

We also produce a standardised range of high grade industrial UPS systems with single phase and three phase outputs complete with sophisticated remote alarm and status indication interfacing for use with centralised monitoring management information systems.
The common logic, subassemblies and semiconductor switching bridges from our industrial UPS systems designs are further utilised in our standard range of UPS systems and frequency converters to meet the demands of the discerning IT users of critical duty file servers and special application mainframe computers where the normal commercial UPS systems are not considered good enough.

Our mass transportation auxiliary power converters have also adopted the topology and technology used in our UPS systems and fixed installation power conversion equipment. The converters use the latest in high frequency switching techniques for all types of semiconductor devices in the construction of battery chargers, DC to DC converters and PWM sine wave inverter designs. The converters are built into compact, rugged, shock resistant weather proof enclosures for mounting under all types of mass transit vehicles or on the roof of low floor height light rail vehicles.

The communications class modular rectifiers we supply for the telecoms and broadcasting applications use high frequency switch mode technology with input power factor correction and harmonics correction filters so that the rectifier draws sinusoidal input current from the mains.