Power panels
Power-factor correction and harmonic-filter panels
Most power-factor work starts with capacitors, and we supply those. When the job calls for a complete panel, our shop builds it under its UL 508A program.
Power-factor correction
Power-factor correction supplies reactive power (kVAR) close to the loads that need it, so less has to come from the utility. Depending on the plant, it can reduce a utility power-factor charge or free capacity in transformers and cables.
Correction can be fixed, or switched automatically in steps as the load changes. Where drives and other electronic loads are present, capacitors can interact with harmonics, so the design has to take them into account. Whether correction is worth doing at all depends on your utility's rate and your load. Power factor, explained, on FIXKVAR.com →
Harmonic filters
A harmonic filter reduces the harmonic current that flows upstream into the supply from loads such as drives, typically where a limit has to be met or where harmonics are causing problems in the plant. Passive filters are tuned to particular harmonics; active filters inject compensating current at their connection point. The right type depends on the loads and the supply. Harmonics and IEEE 519, on FIXKVAR.com →
What we need to quote
| For | Send us |
|---|---|
| Power-factor correction | The kVAR required, or the bills and load data to size it from; the voltage; whether it should switch automatically; drives on the system; where the panel will live |
| Harmonic filter | The loads causing the harmonics, the limit to meet if there is one, any measurements you have, the voltage, and where the panel will live |
Not sure what you need? Start with the bills and a description of the plant. From the bill to the fix, on FIXKVAR.com →