Sometimes a few turns in the secondary winding of a transformer experience a partial short, which in turn causes a voltage drop across the secondary. The usual symptom of this cond... Read more
Dry-type transformers are a part of most electrical installations. They range in size from small doorbell transformers to three-phase 25-kVA units installed in electrical closets t... Read more
The performance of a 3-phase generator at the terminals is based on the 3-phase power fundamentals. The generator typically supplies power to more than one load, some of which may... Read more
Lockout/tagout energy sources When electrical systems are de-energized to perform maintenance work safely, precautions must be taken to insure that circuits are not accidentally tu... Read more
Avoid working “live” Electrical testing must often be performed on energized circuits and equipment. But the safest technique for doing tasks such as repairing and replacing faulty... Read more
Most multimeters can only measure current up to 10 A maximum. The current measuring facility is intended only for small current components and, in particular, for electronic circui... Read more
Excitation control on ship generator is required to maintain the normal operating voltage vary kVAR generation to match with the load increase the steady-state and dynamic stabilit... Read more
AC – Alternating currentAh – Ampere-hour of batteryCB – Circuit breakerDoD – Depth of discharge of batteryDC – Direct currentEMF – Electromotive... Read more
This type of Ship’s Diagram includes basic circuit logic. Electrical components are confined by ‘series and parallel’ rules. These rules are essential in the understanding of... Read more
The power rating of ship electrical equipment applies to all equipment (electrical or mechanical) commonly found in electrical power plants.The electrical power ratings of generato... Read more
