Causes, regulations, equipments immunityGET THE FREE GUIDE
Voltage SAGs are generally caused by faults in the public network or in the installations of network users, in few cases by transient overloads due to the gearing up of large motors or the switching on of large loads.
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.
The great deal of Voltage SAG have a duration lower than 1 second and a residual voltage higher than 40% of the rated value.
The more modern the equipment is and the more electronics is required, the more serious are the problems caused through voltage SAG. With the increasing number of regenerative energy sources, energy sags, fluctuations and frequency deviations also increase.
Example of costs due to voltage SAGs:
• Costs for unproductive personnel due to the sudden termination of the production cycle.
• Costs for raw materials and production lost.
• Costs for damages and/or malfunctions of machineries (repairs to them, temporary hire of new ones).
• Penalties caused by contractual shortcomings.
• Sanctions for damage to the environment. Increase in general insurance costs.
Voltage SAGs are the most common cause of equipment malfunctions in automated industry.
SAGs correction up to -50% for 1 min.
Economical solution: no maintenance and operation costs.
No battery energy storage required. Efficiency >98% at nominal power.
|Model||Power||Input voltage compensation|
|Oxygen 10-40||From 200kVA to 3200kVA||-40% for 1 minute (100% Vout)||±10% continuos|
|Oxygen 15-50||From 200kVA to 2000kVA||-50% for 1 minute (100% Vout)||±15% continuos|
SAG correction up to -50% with continuous ±10%, ±15% online regulation.
>98% at nominal power.
Designed for standard industrial loads with admitted overload as of 150% for 1 minute (at nominal input voltage).
Fast & Easy maintenance.
Minimum maintenance and increased reliability.
Internal by-pass static switch enabling load supply in case of fault condition.
Modbus RTU (TCP on request).
Easy to understand with simple user controls, events log.
Remote duplication by dedicated software (Ethernet).
Sensitive machineries, semiconductors.
High speed bottling, packaging lines.
Steelworks, petrolchemicals, fiber, automotive.
Sensitive medical equipment, hospitals.
Banks, telecommunication, data centres.