guard lamp的意思|示意

Guard lamps, also known as Guide lamps, are specially designed to indicate the presence of neutral earth fault in an electrical system. It is typically used in high-voltage applications to protect people, machinery and the structure from harm due to an unexpected electrical breakdown.

A system with a guard lamp consists of a lamp, a current transformer, an indicator and a control circuit. The current transformer senses the current flowing through the system and transmits the information to the indicator and the control circuit. When an earth fault occurs, the current transformer will detect the imbalance in the current and will send a signal to the indicator and control circuit. The indicator will then activate the lamp, thereby indicating the presence of an earth fault in the system.

The guard lamp is a vital part of the safety system of an electrical system and should be installed in all electrical installations. It provides a visual indication of an earth fault and thus helps to avoid potential danger and damage. It can also be used to detect earth faults in equipment that is not in use, so that preventive maintenance can be carried out.

When installing guard lamps, it is important to ensure that they are properly connected and that they are connected to a properly installed and insulated earth fault indicator. It is also important to regularly inspect them for any signs of wear and tear and to replace them as soon as possible. Regular inspection and maintenance of the guard lamps will ensure that they are always working correctly and that they can provide the necessary protection against electrical faults.