Isolation Transformers
What is an isolation transformer?
Well it is a transformer that has the secondary windings, both electrically and physically isolated from that of the primary windings. However, what this also means is that it is magnetically coupled, but not electrically coupled. What is the reason for this? It is simply this, with line isolation the transformer now becomes that of a filter. The characteristics of this is that if there are any voltage spikes the transformer will greatly reduce the effect this would have on the load. You might even find that some of these transformers are set up with a ration of 1:1. What this does, is ensure that the voltage entering in, is going to be the same exiting out.
How the isolation transformer reduces these voltage spikes before it can reach the secondary winding is, because of the rise time of current through an inductor. As the current tries to increase, there is a increase in the magnetic field, this then produces a counter voltage that will oppose the applied voltage. Put simply the faster the current tries to increase, the greater the opposition to it will become. So by the time the spike gets transferred to the secondary coil it will either be eliminated or greatly reduced.
The Truth About Energy-Efficient Motors
Everyone wants to save energy. It costs less to use less energy. It's the "green" and "cool" thing to do. And if you are in the market for a motor, the government may soon pay you to replace your inefficient motors with new, energy-efficient NEMA premium ® versions.
So, then, you might think that buying a premium-efficient motor is the answer to your energy usage problems. But you would be overlooking an important fact: an energy efficient motor is only one piece of the energy savings puzzle. While premium-efficient motors do help to reduce energy usage, they are by no means a cure-all to every energy consumption problem.
For the highest energy savings, it's important to look at the entire drive-train when searching for ways to improve efficiency. Consider carefully the misconceptions that surround energy-efficient motors, and be sure you are investing your money wisely to save the most energy possible.
Hydraulic Fluids
- Petroleum Oil – used in most applications
- Fluids With High Water Content – primarily used where there is a high risk of fire.
- Invert Emulsion Fluids – is a petroleum base fluid with up to 40% water content, which acts as an oil.
- Glycol Based Fluids – mixed with water and are used in extreme cold conditions.
- Synthesized Hydrocarbon Hydraulic Fluid- used in applications where there is a wide range of temperature from hot to cold.
- Vegetable or Grain Oils – used in food or pharmaceutical industries.
