Rapid Delivery for Air circuit breaker-FTW2 to Ghana Factory


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Model: Rated voltage (V): Rated insulation voltage/Rated impulse withstand voltage Uimp(KV): Installation(poles): Frame size rated current(A) Rated current(A) Rated breaking Capacity(KA): Rated short-time withstand current Operating performance
Rated Ultimate Short-Circuit Breaking Capacity Rated short-circuit breaking capacity Power on(times) Power off(times)
400V 400V 400V
 FTW2-1600  AC400  690/12000  withdrawable type,stationary type(3 poles,4poles)  1600  200,400,630, 800, 1000  55  42  42  10000  5000
 1250,1600  5000
 FTW2-2000  2000  630,800,1000  80  80  65  10000  6000
 1250,1600,2000  5000

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“Work of the electrician in three major fields: power and lighting, communication, and transportation.”

Originally a public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).


Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

An electrician is a tradesman specialising in electrical wiring of buildings, stationary machines and related equipment. Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure. Electricians may also specialize in wiring ships, airplanes and other mobile platforms. In the film industry and on a television crew the Electrician is referred to as a Gaffer.

“Electrician” and “electrical contractor” are related terms. An electrician is an individual tradesperson; an electrical contractor is a business that employs electricians to design, install, and maintain electrical systems. In most of the United States, separate licensing requirements exist for electricians and electrical contractors. Electricians are typically not allowed to perform work for the public unless under the employment of an electrical contractor…


In the United States, electricians are sometimes referred to as a electrical wire men as opposed to Electrical linemen, who work on electric utility company distribution systems at higher voltages. Electrical contracting is divided into four areas: commercial, residential, light industrial, and industrial wiring. Service electricians have considerable skills troubleshooting wiring problems, wiring, and making repairs. Construction electricians focus on the actual wiring of buildings and may have few skills troubleshooting wiring problems. Other specialty areas are marine electricians, research electricians and hospital electricians…

United States

In the US, licensing requirements for construction work are controlled by local building officials. Typically, certain types of electrical work are only permitted to be performed by a Journeyman or Master electrician. The requirements for becoming a journeyman or master electrician, and the types of work they are permitted to do, vary between individual states; however, there are often interstate reciprocity agreements. Not all states offer a statewide journeyman or master electrician license, and the license may be limited to the county or city’s licencing board.

Before electricians are allowed to work without supervision, they are usually required to serve an apprenticeship lasting from 3 to 5 years under the general supervision of a Master Electrician and usually the direct supervision of a Journeyman Electrician. Schooling in electrical theory and electrical building codes are required to complete the apprenticeship program. Many apprenticeship programs provide a salary to the apprentice during training. A Journeyman electrician is a well rounded craftsman who has met the experience requirements for on the job training (usually 4080 to 6120 hrs) and classroom hours (about 144 hrs.); they may also have a two year relevant degree and another two to three years of apprenticeship training and have passed a licensing exam for their jurisdiction, be it state, county or city. They are trained in all phases of electrical construction installation in various building styles (residential, commercial, industrial, basic electronics) and maintenance of equipment after installation. All of their time is well documented under the jurisdiction of the state government in order for their time to be credited. A Journeyman is usually permitted to perform all types of electrical work except the design of electrical systems, although in some jurisdictions a Journeyman may design systems within certain limits. By contrast, a residential electrician is only permitted to work on residential projects with limitations (for example under 4 stories), and apprenticeship is typically four to five years. In certain states like Michigan, to go on to be a Master Electrician and then an electrical contractor, a journeyman has to work another two years past his passing of the extensive exam given and then apply to take the Master’s exam which is another very rigid exam. Then they can apply for an electrical contractors license according to the guidelines of that government…

DC Hipots can be used for the following testing applications: cable, transformers, electrical switchgear, terminations, motors generators and other electrical apparatus.

Today we’re going to take you behind-the-scenes to do a live test with our 800PL series Portable DC Hipot Testers. Here at HAEFELY HIPOTRONICS we always stress the importance of safety. So be sure to check with your own company’s guidelines for personal protective equipment.

This unit is our 880PL DC Hipot tester. It’s capable of putting out 80kV at 10mA. Other models in the 800 series follow a similar testing procedure, but today I’m demonstrate testing on a 15kV-rated URD cable.

While the power is off, connect ac power supply to the unit and 120V/60Hz power strip. Also, connect high voltage, ground, and return leads. Then connect the other ends of your leads back to your unit. Also, be sure your interlock plug is connected.

Now it’s time to make sure that all nonessential personnel are out of the testing area so you can begin your test. Set your current range to max, and set your voltage range to the desired setting. My cable is only rated for 15kV, so I’m going to use the lowest 0-20kV setting. Make sure your voltage control is lowered all the way to zero. Turn on the ac power switch, and this beacon here will light up to indicate there is power to the unit.

From a safe position, turn on your high voltage. This beacon will light red indicating that you are ready to start your test.Slowly raise your voltage to the desired setting. For me, that’s going to be about 13kv. You can hold your voltage for as long as your test specifies.
Now that the voltage is holding on my device under test, I’m going to check the leakage current on the current meter.

Right now the current meter range is 0-10 ma. As you can see, the current is nowhere near 1 milliamp, so I’m going to adjust the current range to go into microamps. As you can see, we’ve got about 4 microamps of leakage current. Now I’m going to return my current meter to the 0-10 milliamp setting.

Our test has run long enough, so I’m going to go ahead and slowly lower my voltage back down. I’m going to turn my high voltage off, and my ac power off. It’s important to make sure your unit is properly grounded, so I’m going to use a grounding stick. Now you’re ready to disconnect your specimen…and pack up the 880 for another test.

Call our Sales Department at 845.230.9245.
Request a free quote anytime online.
Learn more at www.hipotronics.com.
Read our 800 Series Datasheet.
Get accessories: sales@hipotronics.com.

HAEFELY HIPOTRONICS has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice.

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