What is the purpose of an electrified hinge?

Electric power hinges provide an electronic access control mechanism for secure locking of commercial doors. These power transfer hinges provide a concealed, vandal-resistant way to run wires from the door frame to doors equipped with exit devices and electric locks.

What is a power transfer loop?

Power Transfer Loops. Surface and concealed mortise mount power transfer loops provide a means of running wires from the frame to doors equipped with electric locks and exit devices.

What is a door loop?

One of the most frequently-cited products seems to be the door loop or door cord – a power transfer which protects wires leading from the frame through the door, to the electrified hardware. …

What is a power transfer for a door?

An EPT is an electrical power transfer, which is used to transfer wires from the door frame to the edge of the door. It is used when there is a door-mounted piece of electrified hardware which requires power and/or sends a signal to a remote location.

What is an electrified mortise lock?

Electrified Mortise Locks are simply standard mortise locks equipped with a solenoid that keeps the latchbolt from retracting (usually only from the unsecure side). Thus when power to the lock is disengaged or “fails”, the lock will go to its fail-safe (unlocked) or fail-secure (locked) mode.

What is electric strike lock?

Electric Strike Locks or “Electric Strikes” Electric strikes are electromechanical door locking devices, meaning they are mechanical locks with electronic devices that provide additional functionality. Electric strikes are used in combination with another form of locking devices, such as a lock set or a panic bar.

What type of tools and materials is varnish?

Varnish is a transparent, hard, protective finish or film primarily used in wood finishing but also for other materials. Varnish is traditionally a combination of a drying oil, a resin, and a thinner or solvent.

What happens to a fail safe electrified mortise lock when the power is turned off or fails?

Electrified mortise locks typically have a mechanical override function so that they can be opened by using a key or by turning the handle. Thus when power to the lock is disengaged or “fails”, the lock will go to its fail-safe (unlocked) or fail-secure (locked) mode.

How do electrified locks work?

Electric locks use magnets, solenoids, or motors to actuate the lock by either supplying or removing power. Operating the lock can be as simple as using a switch, for example an apartment intercom door release, or as complex as a biometric based access control system.

When does a ground loop occur in an electrical circuit?

This is true even if circuit 2 is turned off. Although they occur most often in the ground conductors of electrical equipment, ground loops can occur wherever two or more circuits share a common current path, if enough current is flowing to cause a significant voltage drop along the conductor.

How does the ground loop work in a transformer?

The loop acts like a short circuited single-turn “transformer winding”; any AC magnetic flux from nearby transformers, electric motors, or just adjacent power wiring, will induce AC currents in the loop by induction.

What do power transfer loops do for doors?

S urface and concealed mortise mount power transfer loops provide a means of running wires from the frame to doors equipped with electric locks and exit devices.

How are power cords connected in a ground loop?

When signal cables are connected between A and B, the shield of the data cable is typically connected to the grounded equipment chassis of both A and B. This forms a closed loop with the ground conductors of the power cords, which are connected through the building wiring. This is the ground loop.