Advanced level
Fault rating ng switchboard, harmonics sa neutral, at ang mga numerong nasa likod ng arc flash label.
- 4 min basahinArc flash basicsArcing current, incident energy, boundary and working distance explained, with three engine runs that show clearing time beating fault current every time.
- 4 min basahinHarmonics and neutral sizingWhy third harmonic current adds in the neutral of a four-wire circuit, what the 0.86 factor does, and how to apply it by hand to a cable size result.
- 4 min basahinIndustrial switchboards: fault rating, form, IPWhat the three ratings on an industrial switchboard or motor control centre mean, how each one is chosen, and which AmpSize tools feed the numbers behind them.
- 3 min basahinProspective fault current at a boardHow the fault current at a board comes from the source impedance and the submain, why the cold cable gives the maximum, and what to compare it with.
Mga calculator na ginagamit ng mga guide na ito
- Arc flash calculatorI-estimate ang enerhiya ng arc flash at ang PPE category nito.
- Cable fault rating calculatorTingnan kung kayang tiisin ng conductor ang fault current.
- IDMT grading calculatorI-plot ang trip curves ng inverse-time overcurrent relays.
- Transformer calculatorKalkulahin ang transformer full load current at impedance.
- Cable size calculatorHanapin ang pinakamaliit na cable size na pumapasa sa bawat check.
- Three phase power calculatorI-convert sa pagitan ng power, current, voltage at power factor.
- Motor calculatorHanapin ang motor full load current, starting current at torque.
- Full load current calculatorKalkulahin ang full load current mula sa power, voltage at phase.
- Fault level calculatorProspective fault current sa board mula sa source nito.