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Power Factor Control for Welding Applications SPEEDVAR
- Total solution for improving the power factor of welding loads.
- Built in PF meter instantly shows the improvement in power factor
- voids penalty for low power factor for welding loads.
- Greatly reduces the average load current thus reducing Demand Charges.
- Syntron exclusive Fuzzy Logic Controller works intelligently.
- vailable for single phase, two phase and three phase welding machines 3 KVA to 20KVA.
- Suitable for individual arc welding and TIG welding machines.
- Quick Control. No waiting for capacitor to discharge.
- Tolerates voltage fluctuations caused by welding loads.
- Compact wall mounting enclosure.
- Designed for workshop environment.
- Field proven, reliable.
Welding loads present quite a challenge to the designer of power factor control systems. This is because of the rapidly fluctuating current taken during the welding process.
This problem is addressed in SPEEDVARTM by a two prong approach a specially designed current sensing relay and a fast discharging arrangement for the capacitor.
The current sensing Relay has built in Fuzzy Logic. Fuzzy Logic differs from digital logic in that the prevailing conditions are recognized and the decision is taken not only on these conditions, but the previous history too. This ensures a smoother control, avoiding unnecessary on/off operations, at the same time maintaining the target within close limits.
The capacitor used for power factor is specially arranged so that it discharges very quickly and is ready to be switched on again in a moment. This allows SPEEDVARTM to follow the welding cycle property.
The power factor is measured instantly by the Syntron Power Meter on the panel. This serves a two fold purpose it shows the performance of te SPEEDVARTM panel vis a vis the power factor of the total factory. It also serves to indicate any faults or failures within the SPEEDVARTM panel, such as tripping of an MCB or deterioration of capacitor value etc. by interpretation.
The operation is very simple. The load current is measured by the SPEEDVARTM Relay, and a contactor is switched on or off depending upon the Fuzzy Logic programmed in the Controller. The contactor is used to switch the capacitor for improving the power factor. A fixed capacitor is used to compensate the inductance of the transformer. Protection is provided by fuses and MCBs.
Specifications
Voltage
240VAC 50Hz for single phase, 415V AC 50Hz for two phase and three phase.
Load Current
Commensurate with the KVA ration rating of the welding set.
Input
Terminals are provided to take cable sockets of appropriate size.
Output
Terminals are provide to take cable sockets of appropriate size.
Measurement : Meter measures power with accuracy of +/- 2 degrees electrical.
Enclosure : Wall mounting panel.
Connections
The SPEEDVARTM panel is connected to the electrical supply point and the welding machine supply is takes from the SPEEDVARTM panel
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