DC voltage-steady supply
Electric Steady Voltage
steady voltage distribution
Steady voltage stability
steady-voltage power supply
Voltage Steady-state Stability
voltage steady-state stability analysis
voltage steady-state stability margin
steady state and dynamic voltage regulation
steady state over voltage coefficient
Steady State Voltage Stability
steady-state over-voltage
steady-state over-voltage protection device
Steady-state Voltage Stability
active voltage [= effective voltage]