Ship overcurrent relays are used to protect sensitive equipment against over or under current conditions. By using current transformers (CTs), these protective relays monitor large... Read more
Ship protection and monitoring relays ensure safety and a high level of ship electrical system availability by monitoring electrical power (voltage, current, and frequency).An impo... Read more
A simple overview of ship electrical contactor and all contractors accessories. The itemized overview of contactor accessories should help while sending routine ship technical insp... Read more
Contactors and relays from certain manufacturers are constructed to work with a separately top-mounted ‘shock absorber’ mechanism. It is attached as an accessory to the... Read more
A contactor is used to switch larger amounts of electrical power through circuit contacts of 10 amps or higher. Contacts, carrying such a load are called ‘Main Contacts... Read more
The contacts of electromechanical devices on ship electrical system are utilized through control circuitry only are unlikely to sustain currents higher than 10 Amps. They are calle... Read more
Electromechanical relays can be expensive, large, take longer to work than modern semiconductors and have a finite contact life, particularly for large power contactor relays on bi... Read more
A reed relay consists of a reed switch, ie a sealed glass capsule containing two separated overlapping ferromagnetic reeds. A typical reed switch capsule. The capsule is surrounded... Read more
Grouped cables are reduced to single lines for convenience and then continued in a normal or crossed arrangement. The sample illustrates cable DSE-55, shown by a heavy line, which... Read more
Block diagrams represent the main arrangements and inter relationships between either different systems or different modules within one system. They create a general overview of th... Read more
