Kirk Key Interlock Symbol

The one line diagram symbols presented here are commonly accepted symbols.

Kirk key interlock symbol. Therefore such systems are commonly referred to as castell bourré trayvou or kirk keys. When the actuator is inserted into the interlock guard closed the trapped key can be rotated and removed. Key released when solenoid is energized. With the key free the actuator cannot be removed.

It may be used to prevent undesired states in a finite state machine and may consist of any electrical electronic or mechanical devices or systems in most applications an interlock is used to help prevent a machine from harming its operator or damaging itself by preventing one element from. Castell trapped key interlocks have been used as part of integrated safety systems across a wide number of industries worldwide for over 95 years. Both worked in the power generation and distribution industries in the early part of the 20th century and both pioneered the use of trapped key interlock for switchgear control. The fundamental principle of interlocking disabling one electrical or mechanical function unless some other function or functions is in a particular state can be achieved in many ways.

Ge entelliguard breaker learn more at. Key interlocks avoid the limitations of electrical interlocking and the restrictions of. An interlock is a feature that makes the state of two mechanisms or functions mutually dependent. For more information regarding key removable positions please reference the technical paper how an.

To ensure safety the risk of hazardous energy and equipment needs to be controlled. One line diagrams are an important means of communicating the components relationships and connections within a circuit or electrical system. A white paper by kirk key interlock company. Our trapped key interlock safety systems and safety components provide our customers with solutions to control these risks.

Slamlock trapped key interlock switches combine the features of trapped keys with tongue actuated interlocks. Kirk believes everyone has the right to be safe at work. Kirk kirk kirk key removable positions the e or w next to the interlock symbol indicates the position of the interlock bolt when the key is removable e extended w withdrawn. Trapped key interlocks have a number of functions in substation switchgear applications.