12 Years Factory FTKN (KYN28A) -12 Indoor Exchange Metal Armored Withdrawable Switchgear Export to Botswana


Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

Related video

Our company insists all along the quality policy of "product quality is base of enterprise survival; customer satisfaction is the staring point and ending of an enterprise; persistent improvement is eternal pursuit of staff" and the consistent purpose of "reputation first, customer first" for 12 Years Factory FTKN (KYN28A) -12 Indoor Exchange Metal Armored Withdrawable Switchgear Export to Botswana, winning customers' trust is the gold key to our success! If you are interested in our products, please feel free to visit our web site or contact us.


FTKN (KYN28A) -12 indoor exchange metal armored withdrawable switchgear is the transmission and distribution control of the single bus segmentation system device that is used for receiving and distributing the power.

It is mainly used for power distribution of power plants, small and medium-sized generator transmission, industrial and mining enterprises and also used for accepting and feeding, large high voltage motor starting plants of the secondary substation to control, protect and detect the whole line.

Step Down Transformer-step-down transformer-stepdown-step-down-transformer-step down transformer



Step Down Transformer, center tapped transformer, secondary transformer voltage, transformer primary winding voltage, transformer secondary winding voltage, transformer primary winding resistance, transformer secondary winding resistance, transformer wiring, transformer, step down transformer, transformers, The step-down transformer is used to provide this low voltage value which is suitable for electronics supplying. It transforms home voltage (230/120 V) from primary to a low voltage on the secondary side which is used for the electronic supplying. If electronic devices are designed to have higher nominal power, transformers with high operating frequency are used (kHz-s). The transformers with higher nominal power value and 50/60 Hz nominal frequency would be too large and heavy. Also, the daily used battery chargers use the step-down transformer in its design.
The step-down transformers have a very important function in power system. They lower the voltage level and adapt it for energy consumers. It is performed in several steps described below:

• A long distance energy transmission system should have voltage level as high as possible. With high voltage and low current, the transmission power loss will be significantly decreased. A power grid is designed that has to be connected with the transmission system with the different voltage levels. Step-down transformers are used in interconnection of transmission systems with different voltage level. They decrease voltage level from high to lower value (e.g. 765/220 kV, 410/220 kV, 220/ 110 kV). These transformers are huge and have very high nominal power (even 1000 MVA). In this case, when the transformer turns ratio is not high the auto transformers are usually installed.

• The next voltage level transformation step is adapting transmission voltage to the distribution level. The characteristic voltage ratios in this case are 220/20 kV, 110/20 kV (also the LV secondary voltages 35 kV and 10 kV can be found). The nominal power of those transformers is up to 60 MVA (usually 20 MVA). The on-load tap changer is almost always installed in these transformers. A voltage regulation is the main function of tap changer. In USA the tap changer is based on LV side, and in rest of the world mostly on the HV transformer side.

• The final voltage transformation step is adapting the voltage to the home voltage level . These transformers are known as small distribution transformers with nominal power up to 5 MVA (mostly below of 1 MVA) and with nominal voltage values 35, 20, 10 kV on HV side and 400/200 V on LV side. It is noticeable that those transformers have high turns ratio. They usually have de-energized tap changer with 5 tap position (+/- 2 tap position) and do not have on load tap changer.
please subscribe my channel

Please watch: “Save Energy || Use Energy Saving Lamp”


What Is a Relay? is presented by Katie Rydzewski for Galco TV. Buy Relays at 800-337-1720 or visit: http://www.galco.com/get/Relays?source=YouTubeHowTo

Sign up for Galco’s newsletter that features our newest products, our can’t-miss deals, our best videos, and total access to Galco’s electronics expertise: http://www.galco.com/email/

Connect with us!





Don’t forget to like and comment on this video, and subscribe to our channel!

Relays are switches that open and close circuits electromechanically or electronically. They control one electrical circuit by opening and closing contacts in another circuit. When a relay contact is normally open (NO), there is an open contact when the relay is not energized. When a relay contact is Normally Closed (NC), there is a closed contact when the relay is not energized. In either case, applying electrical current to the contacts will change their state.

Relays are generally used to switch smaller currents in a control circuit and do not usually control power consuming devices except for small motors and Solenoids that draw low amps. Nonetheless, relays can “control” larger voltages and amperes by having an amplifying effect because a small voltage applied to a relay’s coil can result in a large voltage being switched by the contacts.

Protective relays can prevent equipment damage by detecting electrical abnormalities, including overcurrent, undercurrent, overloads and reverse currents. In addition, relays are also widely used to switch starting coils, heating elements, pilot lights and audible alarms.

To find General Purpose Relays visit: http://www.galco.com/shop/General-Purpose-Relays?source=YouTubeHowTo

For Solid State Relays visit: http://www.galco.com/shop/Solid-State-Relays?source=YouTubeHowTo

Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & Electronic Automation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for Variable Speed Drives, CNC, PLC Systems, Dynamometers & Test Stand Applications. Visit us online at http:// www.galco.com or call us at 800-337-1720.


With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and Trademark Office, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided “as is”, with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warrantees of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.

Related Products

WhatsApp Online Chat !