Online UPS, Power : 1-3kw, 3-6kw, 6-9kw

An Online UPS is ideal for environments where electrical isolation is necessary or for equipment that is very sensitive to power fluctuations. These UPS is reserved for 10 kW to 500 W of load. Even though the initial cost of the online UPS is slightly higher, its total cost of ownership is generally lower due to longer battery life. The online UPS may be necessary when the power environment is "noisy", when utility power sags, outages and other anomalies are frequent, when protection of sensitive IT equipment loads is required, or when operation from an extended-run backup generator is necessary.

The basic technology of the online UPS is the same as in a standby or line-interactive UPS. However it has a much greater current AC-to-DC battery-charger/rectifier, and with the rectifier and inverter designed to run continuously with improved cooling systems. It is called a double-conversion UPS due to the rectifier directly driving the inverter, even when powered from normal AC current.

In an online UPS, the batteries are always connected to the inverter and when power loss occurs, the rectifier simply drops out of the circuit and the batteries keep the power steady and unchanged. When power is restored, the rectifier resumes carrying most of the load and begins charging the batteries, though the charging current may be limited to prevent the high-power rectifier from overheating the batteries and boiling off the electrolyte.

DIFFERENT TYPES OF ONLINE UPS

• Single Phase In & Single Phase Out
• Three Phase In & Single Phase Out
• Three Phase In & Three Phase Out
• Static By-pass
• Hot Standby system
• Parallel redundant system
• RS232Interface
• BENEFITS

• The On-Line design enables the system to adjust & filter power fluctuations continuously and automatically under power normal conditions.

• During Power Failure, It can provide immediate back up power from batteries without any interruption. Once the power is restored the system shall again work on mains & will charge the batteries.

• Longer battery life