HomeBlog

Blog

Read practical engineering insights on harmonics, reactive power, voltage stability, equipment selection and commissioning for industrial and utility projects.

Soft Starter Starts per Hour: Specify Current, Time and Hot Restarts

Soft Starter Starts per Hour: Specify Current, Time and Hot Restarts

Define medium-voltage soft-starter repeat-start duty using current, acceleration time, motor thermal limits, bypass operation and hot-restart records.

Capacitor Bank Contactor Selection: Check Switching Duty Before Amperes

Capacitor Bank Contactor Selection: Check Switching Duty Before Amperes

Select capacitor-bank contactors using capacitor duty, inrush conditions, stage configuration, switching frequency and documented assembly coordination.

Three-Phase Current Imbalance Compensation: Diagnose the Boundary First

Three-Phase Current Imbalance Compensation: Diagnose the Boundary First

Separate load imbalance, voltage unbalance and neutral harmonics, then define measurements and acceptance criteria for three phase imbalance compensation.

Capacitor Bank at High Altitude: Specify Insulation and Cooling Separately

Capacitor Bank at High Altitude: Specify Insulation and Cooling Separately

Prepare a high altitude capacitor bank specification covering external insulation, cooling, installation environment and documented design review.

Detuned Reactor Overheating: Separate Harmonic Duty from Cooling Problems

Detuned Reactor Overheating: Separate Harmonic Duty from Cooling Problems

Investigate detuned reactor overheating with branch current spectra, component matching, thermal protection and ventilation checks before replacing equipment.

Motor Starting Voltage Drop: Check Current Limit and Acceleration Together

Motor Starting Voltage Drop: Check Current Limit and Acceleration Together

Assess motor starting voltage drop using source impedance, measured voltage, load torque and acceleration time before choosing a medium voltage soft starter.