How does one identify a type of ballast?

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When considering the lights that you use in your building, it’s easy to think first about cost or energy usage — and forget about the impact the lights have on its inhabitants.

The light’s color rendering index and color temperature are important factors, for sure. But what about the ways that the lights are constructed?

Ballasts: Magnetic versus electronic

Each fluorescent light contains a part called a ballast — the component that is responsible for reducing the amount of electricity that flows through the light. The ballast prevents the light from being filled with excessive electricity, which could cause a burnout or explosion.

Lights that use newer, electronic ballasts provide a better overall experience for building inhabitants. This is because lights that use an older method — magnetic ballasts — have a much slower frequency; they cause headaches, eye strain, and general discomfort for anyone that needs to work under them.

So what’s the...

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Published on November 24th, 2014 | by Peter Young

When it comes to making your home more energy efficient one of the places you’re not likely to look is at your ballasts. While it might be a bit obscure, it’s still a valid way of reducing your homes energy consumption. To help you get a better understanding of what a ballast actually is and how it works in your home, we’ve put together the following guide:

A quick guide to ballasts:

How they work – The job of a ballast is to limit and reduce the amount of electricity traveling through a given electrical circuit. Much like a restricter plate that limits the top speed of vehicle, the ballast puts a cap to how much energy can travel through a circuit. Why? Because if left un-regulated, the level of electricity traveling through a circuit could exceed the limit of the light bulb, which will result in the bulb burning out, or in some cases, actually exploding the bulb. Yikes! To get a...

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One of the reasons they are becoming popular in the hobby is their compact size, which allows one to “pack” more lamps into a light hood to achieve the desired light intensity. Previously, to increase the light in the aquarium without switching to metal halide lighting, the choices were limited to high output (HO) or very high output (VHO) fluorescents. Compact fluorescent lamps now provide another option to the aquarist. Over the last few years there has been an increase in the availability of compact fluorescents with the color temperatures suited for reef aquaria, making them an attractive option.

Compact fluorescent lamps come in several different shapes and each of these has its own subset of sizes and wattages in which they are available, requiring different ballasts and lamps sockets. Unraveling the myriad possibilities and getting the right answers is often a frustrating task. To be a successful do-it-yourself aquarist it is important to understand the terminology,...

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Ballast and de-ballast operations on ship must be carried out by an experienced and responsible officer as it is directly related to the stability factor of the ship. A ballast system may differ from ship to ship but the basics of all ballast systems remain same; filling, removing, and transferring water from one tank to other to get the required stability for a ship.

Getting Familiar with the System

All valves in the ballast system are normally hydraulically operated from the remote operator station in the ship’s control centre or in the ECR in manual mode or in automatic sequence.

The ballast pump suction and discharge valves, along with other valves, have their fail safe in the OPEN position so that if any valve malfunction or get stuck, still remains open to carry out ballast operation.

The overboard discharge valves have their fail safe as fail-stay position

Different Forms of Ballasting and De-ballasting

Ballasting or De-ballasting...

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