44
Transformers
Transformers are used to change incoming voltage to a different outgoing voltage. A transformer has a primary side
(incoming voltage) and a secondary side (outgoing voltage). The primary side connects to wires from the main power
source and the secondary side outputs the new voltage created. In commercial door operators, the secondary side is
generally 24VAC. Read the markings on the transformer to determine the primary and secondary voltages.
Transformers are rated in VOLT Amps (VA). A transformer can only pass the rated amount of electricity from the main
power to the secondary side. Be careful not to overload the transformer. Verify the amperage rating on all devices
connected to the 24VAC side of the transformer including devices attached to the logic board. Multiply the Amperage
rating for each device by the voltage needed to run the device.
D
Basic Electrical Information
Transformers
▲
COMM 120V
▲
240V
▲
To Next Page
Loading...
