This is especially true with brushless-DC (BLDC) motors, which are increasingly being used due to their efficiency and controllability, but which need the system controller to "know" precisely when to energize and de-energize
the motor's coils to maintain proper rotation.
By resetting a few circuit breakers, they quickly got the relay to de-energize
He unlocked the panel door, threw the breaker switch to de-energize
the panel, and then closed and re-padlocked the door.
And the utility company has redesigned underground electrical networks in lower Manhattan to de-energize
customers in flood zones during major flooding, while keeping customers on higher ground in service.
The whole short circuit discussion led to a particular overcurrent sensing device that could be used to de-energize
the circuit before a fire was started.
Predictable plug loads can be effectively managed with schedule timers, which apply user-programmed schedules to de-energize
and energize the device to match its pattern of usage.
For example, a technician can de-energize
a panel, connect voltage or current modules to all three phases, close and re-energize the panel, and then conveniently read the measurements outside the arc flash zone.
Graves said the Westboro crash prompted police to request National Grid de-energize
wires on West Main Street where a utility pole was sheared in half.
Also, there are a lot of motor contactors in our process system, and if they de-energize
due to a transient, they'll stay dropped out until there is intervention to bring them back on line," he continued.
If this signal goes out of range due to either a failed sensor or failed electronics, the switch will indicate a fault and the relay will de-energize
Electric power is only required for a 1-2 second period to de-energize
the magnets and facilitate removal of the molds.
Solenoid valves in the system de-energize
, allowing the piston accumulator to discharge into the oil recovery vessel, along with any other pressurized oil in the system.