maybe motors
these loads can be controlled by contactors without overload protection
What are non inductive loads
If a different current range is required for an IEC fixed heater overload relay, this must be replaced.
What is the entire overload relay?
This is the repeated opening and closing of the circuit to start and stop a motor
What is jogging
And or and not
What are the three basic lpgic functions
These relay contacts remain open when the coil is de-energized.
What are normally open (NO) contacts?
This is the voltage at which a relay's armature overcomes the spring and closes the contacts
What is the pick-up voltage
These are the three published ratings for relays and similar devices.
What are voltage, current, and horsepower (or VA)?
These loads can be controlled by contactors without overload protection.
What are noninductive loads?
A circuit breaker can be used as a controller for small stationary motors under what horsepower (hp)
What is 1/8th hp
The The temperature or pressure difference between the point where a switch activates and the point where it resets
What is Deadband
Theas relay contacts remain open when the coil is de-energized
What is normally open
This is a contact device that is mechanically connected to a contactor. it can be used to give an electrical signal related to the contactors position
What is a auxillary contact
Repeated closing of a circuit to start and start a motor
What is jogging
Switch phases 1 & 3
What is how do you reverse a 3 phase motor
A switch with contacts that return from the operating position to release the position when the actuating force is removed
What is a momentary contact switch
When replacing contactor contacts you must replace these for all poless
What are all moving and stationary contact
These are the three relay contact and pole designations.
What are SPST, SPDT, and DPDT?
A relay designated as 3PDT-SB has three normally open and three normally closed contacts.
What is false?
What is false?
A circuit breaker can be used as a controller for small portable motors under what horsepower (hp)
1/3hp
A switch with contacts that remain in the operating position after the actuating force is removed
What is a maintained contact switch
These three are the published ratings for relays and similar devices
What are voltage current and horsepower
Overload protection for motors is provided by
A overload relay
This can be classified as an overcurrent that exceeds the normal full load current of a circuit
What is overload
This device provides overload protection for motors.
What is an overload relay?
This is the voltage at which a relay’s armature overcomes the spring and closes the contacts.
What is pickup voltage?