Power Electronics

Power Electronics and Energy Management or PEEM blog of delabs Technologies has a Focus of Power Supplies and Instruments related to Energy Testing.

Search This Blog

Monday, October 12, 2020

Surge Protection and Lightning Arrestors

 

Supplementary to EMI/RFI/EMC Immunity of an Equipment. Many Installations are subject to Highly Disruptive Electrical Environment not just EMI. Depending on the budget and the situation a solution has to be found. Sometimes a CVT or an Isolation Transformer can do a lot of good. 

Converting all Energy inputs to battery energy and having a Isolated Synthetic Sine Supply may be an expensive but good solution. Either way the devices that face the harsh environment have to be over rated along with these protections. - delabs design Notes

Design of AC Electronics Load Surge Protection - World Academy of Science, Engineering and Technology - WASET

 Surge Protection and Lightning Arrestors

Abstract-This study examines the design and construction of AC Electronics load surge protection in order to carry electric surge load arisen from faults in low voltage electricity system (single phase/220V) by using the principle of electronics load clamping voltage during induction period so that electric voltage could go through to safe load and continue to work. The qualification of the designed device could prevent both transient over voltage and voltage swell.

Lightning Bolt damages Components

A ThunderBolt Zap can damage electronic parts. The Earth Leakage Circuit Breaker ELCB or Overload Breaker may Trip.

Surge Protection and Lightning Arrestors

Mains Strip Board should have protection, The EMI RFI filter, Varistors can help. Earthing and Lightning Arrestors should be good in the building.

The Blue ones are MOV Metal Oxide Varistors, sometimes they fail as a short circuit, so better to use a fast blow fuse. Then you see Gas Tube Arrestors that are even used in a Landline Terminal Box.

Surge Arrestors

A Surge Arrester is a device to protect electrical equipment from over-voltage transients caused by external (lightning) or internal (switching) events. Also called a surge protection device (SPD) or transient voltage surge suppressor (TVSS),

Saturday, October 10, 2020

Kilowatt Classroom Electrical Training

The Industrial Electricians Notebook - Free online electrical books selection that features interesting and timely subjects: electrical theory, electrical reference information, electrical equipment and maintenance data, industrial electronics, and electrical safety regulations.

Kilowatt Classroom Electrical Training

"The harnessing of electrical power to lighten mankind’s work-load is only a little over a century old. During my own career, I have witnessed many changes in equipment, work methods, industry organization, and company philosophies."

Kilowatt Classroom Electrical Training

"All electrical systems are composed of the same basic equipment. Experience has shown it is most economical to generate power in large bulks, transmit it at very high voltage to minimize line losses, and transform it to low voltages for safe feeding to individual customers in small quantities."

The Electrician’s Notebook - Kilowatt Classroom, LLC - Elwood V. Gilliland

Tuesday, September 15, 2020

Insulation Resistance Testing - AEMC

This Insulation Testing Reference by AEMC Instruments is a Must Read for all Instrumentation and Electrical Professionals. Even Students and Enthusiasts who want to learn more about Insulation, can find this informative. The other reference articles also are of Learning Interest. Insulation Testing is a Part of Power, Energy, Green, Solar Systems as well. It is an Important part of Product Safety.

Megohmmeters/Insulation - AMEC

Read - Understanding Insulation Resistance Testing
AEMC is an industry leader in current measurement probes, power quality analyzers, ground resistance testers and insulation resistance testers. It was Founded in 1893.

Understanding Insulation Resistance Testing - AMEC

AEMC Instruments - 200 Foxborough Blvd., Foxborough, MA 02035 USA

Seen above is the Megohmmeter from AEMC. 6505 is a portable battery/mains powered instrument in a rugged field case.

This Features include automatic calculation and presentation of the Dielectric Absorption Ratio (DAR) and Polarization Index (PI). The Model 6505 displays the test voltage, insulation resistance and the leakage current during the test.

Friday, September 11, 2020

Chroma - Energy Instruments and Systems

Chroma Systems Solutions, Inc. (CSS) is a US Corporation in a joint partnership with Chroma ATE of Taiwan. Sales and Service support at Chroma's facility in Lake Forest, CA. Includes Stock of Product Line. - http://www.chromaate.com/

Chroma - Energy Instruments and Systems - https://www.chromausa.com/

Products Include - AC Power Sources, DC Power Supplies, DC/AC Electronic Loads, Digital Power Meters, DMM, Electrical Safety Compliance Testing Tools and ATE Automated Test Systems.

Chroma Modular 63600 DC Electronic Loads

Chroma Modular 63600 DC Electronic Loads with Constant Impedance Mode are designed for testing multi-output AC/DC power supplies, DC/DC converters, chargers, batteries, adapters, and power electronic components. Excellent for research, development, production, and incoming inspection applications.

Chroma Systems Solutions, Inc.
19772 Pauling, Foothill Ranch, CA 92610, USA.

Eaton - Energy and Power Management

 Manufactures automation and control products related to Electrical Power Systems. They include metering devices, protective relays, communications hardware and software. Standard products like circuit breakers and power panels too.

Eaton - Energy and Power Management - https://www.eaton.com/

Electrical solutions and engineering services for distribution, generation, and quality control of Electrical systems.

Surge Protection Products

Eaton offers a comprehensive family of surge products for use at service entrances. These products can help protect sensitive electronics against the damaging effects of surges.

Eaton - Energy and Power Management

Two stages of surge suppression are recommended to provide the best protection for electronic equipment. Two-stage surge suppression should be provided for all cables entering a home, including power, Internet and coaxial.

Eaton offers Cutler-Hammer Brand electrical control, power distribution, and industrial automation products and services.

  • Motor Control
  • Circuit Protection
  • Programmable Logic Controllers 
Eaton's Electrical Sector
1000 Cherrington Parkway Moon Township, PA 15108, USA

Wednesday, August 05, 2020

Schumacher Electric - Battery Chargers and Power Inverters

Since 1947 they have been in manufacturing and marketing of battery chargers, portable power sources, inverters/converters, battery testers, 12V accessories, and welding equipment.

Schumacher Electric - Battery Chargers and Power Inverters

 https://www.batterychargers.com/

Schumacher Electric started originally by designing and producing custom-built transformers for the electronic industry.

PST-900X ProSeries Battery Tester with a Printer

This is 3 Testers Battery, Charging and Starting in one instrument. Easy to use with 3 Button Operation and used for testing 6 & 12 volt batteries.

PST-900X ProSeries Battery Tester with a Printer

It is also helpful in evaluating 12 & 24 volt charging systems. It has a 16 Character LCD with Adjustable Backlighting. Includes Case, Clamps, Batteries.

Before you start testing - Precautions - (from the user manual)

Be sure the area around the battery is well ventilated while the battery is being tested.

Clean the battery terminals. Be careful to keep corrosion from coming in contact with your eyes.

Inspect the battery for a cracked or broken case or cover. If the battery is damaged, do not use the tester.

If the battery is not a sealed maintenance free battery, check the level of each cell and if necessary, add distilled water until the battery acid reaches the level specified by the manufacturer. This helps purge excessive gas from the cells. Do not overfill.

If it is necessary to remove the battery from the vehicle to test it, always remove the ground terminal from the battery first. Make sure all accessories in the vehicle are off to ensure you do not cause any arcing.

Schumacher Electric Corporation
801 Business Center Drive, Mount Prospect, IL 60056, USA.

Battery Systems from Cadex Electronics

They design and manufacture Battery analyzers, chargers, rapid-testers and monitoring systems. They also create custom test solutions in Power Electronics. https://www.cadex.com/

Battery Systems from Cadex Electronics

Products Include - Cadex C7000 Series battery analyzers, Battery Maintenance and Testing Systems. The Cadex C5100 battery tester. Spectro CA-12 Series is the first hand-held battery tester.

Cadex C8000 Advanced Battery Testing System

Cadex C8000 Advanced Battery Testing System

The Cadex C8000 is more than a programmable power supply and load bank; the instrument provides intelligence to assist in battery testing.

"You can capture load signatures of power tools and laptops and then perform simulated battery runtime by replying the stored data. Add a thermal chamber, external load bank and other accessories,"

Cadex Electronics Inc.
22000 Fraserwood Way Richmond, BC V6W 1J6 Canada