Sag Compensator

More than 60% of Power Quality Costs are consequence of Voltage sags. Voltage SAGs are unpredictable and random. SAG starts when Voltage goes lower than 90% of nominal value and ends when voltages resume above 90%. Voltage SAG duration is considered within 10ms up to 1min.

Ortea’s Sag Compensator Oxygen, with a remarkable response speed (<3 millisecond) is able to face lowering (SAG) of the grid voltage of a maximum duration of one minute. The energy required is taken directly from the network. Current models are able to cover network downing up to 50% of the nominal value (-50%). The voltage compensation on the buck/boost primary winding is performed by IGBT static switches controlled by a microcontroller. The microcontroller system monitors the output voltage and determines the opening or closing of the IGBT contacts ensuring the best regulation.

This SAG Compensator can operate with a load variation range for each phase from 0 to 100%, it is not affected by the power factor of the load and it can work with or without the neutral wire. Oxygen can operate with different input and, consequently, output voltage (380V or 415V) from the nominal one (400V).

KEY FEATURES

• Correction in less than 3 millisec. SAG correction up to -50% with continuous ±10%, ±15% online regulation
• High Efficiency >98% at nominal power
• Industrial design Designed for standard industrial loads with admitted overload as of 150% for 1 minute (at nominal input voltage).
• Modular construction Fast & Easy maintenance
• Without energy storage Minimum maintenance and increased reliability
• Internal by-pass Internal by-pass static switch enabling load supply in case of fault condition
• Connectivity Modbus RTU (TCP on request)
• Multilingual touch screen HMI Easy to understand with simple user controls, events log.