Single Phase Products
DCP UPS Systems 650VA – 10,000VA
Eaton UPS System 1.0 kVA – 10kVA
VRLA- Batteries.
STS 16A
UPS Technologies
UPS Technologies
Off-line (or Passive Standby)
Off-line (or Passive Standby) technology is now the most commonly used technology for protecting Loads. In normal mode the load is connected directly to the mains power supply, without any power conversion. The same input power is passed to the output load.
In general, the power is filtered in order to attenuate the most frequent forms of disturbance. In the event of a power problem (outage, voltage sags or spikes) the UPS transfers the load to the batteries to supply stabilized power.
Line Interactive (or Active Stand By)
Operating diagram
Line Interactive (or Active Stand By) technology is a development made possible by the appearance of microprocessors.
The UPS is fully controlled by a microprocessor which monitors the quality of the mains power supply and reacts to any variations. This is what makes the UPS «Active» or «Interactive». can supply the load correctly from input voltages varying between:
The envirAVR – A device that maintains the terminal voltage of a voltage source within required limits despite variations in input voltage or load. Also known as automatic voltage regulator; voltage stabilizer.
On-line Technology
Top-of-the-range technology for the centralized protection of servers
On-line technology has changed a great deal in the last few years, resulting in a dramatic cut in the size of these products. Contrary to what many people believe, an On-line UPS does not supply output current from its battery at all times. The current is completely regenerated by its transformation from AC to DC and then back to AC, thus guaranteeing a constant level of quality, regardless of disturbance on the mains power source.
Zero Transfer time makes the On-line technology mandatory for critical applications: medical and industrial processes for example.
Automatic bypass
Theoretically, this system guarantees the supply of electricity to the load in the event of a fault on the UPS. In fact, although this function is implemented on the largest high power UPSs, it is not fully implemented on small devices on account of the cost of the technology involved.
The principal use of the bypass is to absorb startup inrush currents and to deal with output overloads. When a UPS uses its bypass, the load is no longer protected, which may result in other problems,
Manual bypass
The other bypass function is intended for maintenance work: it is used to power down the UPS without interrupting the power to the load. It is thus possible to work on a faulty UPS in complete safety.
