Why 60hz on ships

A Eurasian Kestrel surveys the beach at Point du Hoc. The latter is well-known for the artificial harbor that was created there by the British, on what was known as Gold Beach.

Looking out over Utah Beach, from within the remains of a German gun emplacement. The shallow Bay of Biscay and English Channel are infamous for their tumultuous, vessel-pounding conditions. Thus, building an artificial harbor, under combat conditions, along this coast, was thought by many to be shear madness.

Churchill, Eisenhower and others believed it to not only be possible, it was essential, and so engineers set to work designing a system that would meet the needs of the Allied armies and navies. Today, several of the caissons remain in an imposing line just offshore, along with one on the beach, which can be surveyed by sightseers at low tide I was fortunate during my visit, low tide was during daylight hours, enabling me to walk all of the landing beaches I visited.

One of the many challenges involved securely anchoring the floating trestle sections, the Whales, which would connect the concrete Mulberry harbor with the beach. The monument shown in the accompanying photographs is located at the Arromanches beachhead. Dedicated to Beckett and his invention; it displays one of the actual anchors used in the landings.

Mounted on piers along the road leading into the small village are a series of the Whales used to connect the Mulberry to the beach. The anchor, Whales and Mulberry concept represent a triumph of maritime engineering, particularly in wartime. Today Arromanches is a small tourist town. I hike up onto a bluff that overlooks the harbor, as I stand there absorbing the scene, I glance down and realize the ground before me is laced with the remains of German trenches.

I try to imagine what it must have been like, for both defenders and invaders alike, to see all those men, vehicles and mountains of material rumble ashore day after day; it must have been an awe-inspiring sight. I hope you find it both interesting and useful. It has everything I want, and the price is right. Alas, it is a 50 Hz model. Is there a way of converting the Euro plugs to our North American plugs? The world is flat and getting flatter, including where cruising vessels are concerned.

Let me begin with a specific aspect of the question posed by the client, he asks if there is a way to convert the European plugs to North American plugs. There are universal wall receptacles that accept a range of, but not all, male plug designs. I frequently encounter these when traveling in Asia. However, they would only be applicable for devices that are not voltage or frequency sensitive, like laptops, tablet and phone chargers. With these universal receptacles it becomes easy, too easy, to make such a mistake.

Please reach out to us if we can answer any questions. We'd love to tell you more about how you can Conquer the Clog. Contact for pumps and valves. Contact for Mining Pumps. Contact for repair, maintenance, parts, service. Some countries regions commonly use 50Hz power grid while other countries use 60Hz power grid. Hertz, in short Hz, is the basic unit of frequency, to commemorate the discovery of electromagnetic waves by the German physicist Heinrich Rudolf Hertz.

In , German physicist Heinrich Rudolf Hertz Feb, to Jan-1, , the first person confirmed the existence of radio waves, and had a great contribution in Electromagnetism, so the SI unit of frequency Hertz is named for him. Hz Hertz is the frequency unit of the vibration cycle time of electric, magnetic, acoustic and mechanical vibration, i.

The speed of 50 Hertz 2 poles synchronous generator is rpm. The grid standard frequency is 50 Hz, which is a constant value. When the frequency increases, the copper and steel consumptions of the generator and transformer decrease, along with the reduction of weight and cost, but will make the inductances of the electrical equipment and transmission line increase, reduce the capacitances and increase losses, thereby reducing the transmission efficiency.

If the frequency is too low, the electrical equipment's materials will increase, along with heavy and high cost, and will make lights flashing obviously. Practices have proved using 50 Hz and 60 Hz frequencies are appropriate. At 60 Hz, the rotor of the generator turns 60 cycles per second, the current changes 60 times per second back and forth, direction changes times.

The speed of 60 Hz 2-pole synchronous generator is 3, RPM. AC power frequency is determined by the pole number of the generator p and speed n, freq. The grid standard frequency is 60 Hz, which is a constant value. It is different with variable frequency drive, which is special for motor speed control only, and also different with ordinary voltage stabilizer.

Ideal AC power supply is stable frequency, stable voltage, resistance is approximately zero and the voltage waveform is pure sine wave without distortion. Frequency converter output is very close to the ideal power supply, hence, more and more countries use frequency converter power supply as a standard power source in order to provide the best electrical power supply environment for appliances to estimate their technical performance.

The lower the frequency, the lower will be the iron losses and eddy current losses. Lower the frequency, speed of induction motor and generator will be lower.

Some drilling vessels have 6 or 8 generators working under the same power management system with load dependent start and stop of the generators. Plenty of companies in Norway with experience of these systems. Of course you can adjust the output regardless of the frequency. Only the old-fashioned ones with a phase shift capacitor bank cannot be adjusted. On a ship, I'd go for 50 Hz.

Should it accidentally be connected to a 60 Hz source there will be no smoke, at least not immediately. CDK , Dec 28, This is an old thread but I just like to mention We seem to be always buying domestic appliances, washing machines, dryers, dishwashers etc.

Where do you get 60hz kit from? I thought the 60 was just to make the Philipinos feel at home? Connecting any generator to shore power will cause smoke - or at least a blown breaker - unless you are very careful to get the waveforms synchronized.

Generally a bad idea. CDK , Jan 12, CDK thats what I would have thought also. Is there separate testing so they only do one test? We have asked our agent to get a new urn for the main galley and we asked for 60, he cant find one in Europe and his suppliers say dont plug in a 50 one to 60 well the first one lasted 2 years I would have thought no prob, an element is just like a light bulb?

Our domestic applicances only say 50 so I guess as they have electric motors in them they are going a bit faster than they should? So where do you get 50 kit? You can run a 50 Hz motor on 60 Hz, but the result may be disappointing.