Join us at Electric & Hybrid Vehicle Technology Expo September 10-12, 2019 Stand 1046
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Join us this week at The Battery Show

Electric & Hybrid Vehicle Technology Expo comes to Novi, Michigan This Week! September 10-12, 2019 The Battery Show is the largest and most comprehensive trade event for the advanced battery manufacturing industry in North America, and Electric & Hybrid Vehicle Technology Expo is the only large-scale trade show exclusively dedicated to the drive train and power system in EVs and HEVs. Combined, they’re a one-of-a-kind event for battery manufacturing and vehicle electrification professionals.

Published on 09/09/19 Read Article
Darrah's Nihon SCR Contactors

Darrah Electric Company Stocks a Full Range of Nihon SCR Contactors

Published on 09/06/19 Read Article
ABB Thyristors

Thyristors are typically used as phase-controlled current valves for AC to DC conversion and vice versa, operating at low frequencies (most often around AC line frequency). In the conducting state, thyristors feature very low losses, making them attractive devices to efficiently control very high currents and energies.

Published on 08/29/19 Read Article
Rebuilt DC Power Supplies

Darrah is an industry leading rectifier manufacturer and aftermarket service provider. We can repair, upgrade or replace any outdated equipment weather it’s our rectifier or not we provide a reliable cost-efficient solution that will increase the performance and longevity of your process.

Published on 08/21/19 Read Article
Grounding Bus Bars and Kits

Wakefield Vette offers the SCGB/SCGBK series of standard off the shelf grounding bus bar and kits for various applications. These are variations of UL Listed ground bar kits of different bar sizes, hole sizes, and lug configurations in addition to the many standard kits in stock. Wakefield Vette can fully customize an order to serve any application, whether it be custom hole patterns for a unique lug shape, an irregular bar size, plating, etc. The mounting brackets that are used are stainless steel, which significantly increases the part’s useful life . The use of stainless steel also protects the brackets from corrosion.

Published on 08/15/19 Read Article
Darrahs Water Cooled Resistance Welding Contactors

Undoubtedly the most popular resistance welding contactors for the past thirty years are Darrah's Direct Water Cooled SCR Contactors. The selections shown are available in welding current ratings to 6526 Amps RMS at 50% duty cycle, 5144 Amps continuous. Choose between single or double sided cooled, and in SCR voltages to 4200 Volts. This product line is the workhorse in medium to heavy KVA welding controllers. Mounting bases and bus bar connections are similar throughout the series, therefore offering flexibility and conformity from 15 KVA through 1500 KVA designs.

Published on 08/08/19 Read Article
Mitsubishi Electric's IGBT Modules

IGBT (Insulated Gate Bipolar Transistor) module is a device required for inverter use in many types of industrial equipment, and had driven the trend towards high currents and high voltage since 1990. The chip structure also evolved from a flat planar structure to a trench gate structure, and the CSTBT™ (Mitsubishi Electric's unique IGBT that makes use of the carrier cumulative effect) has enabled low loss and smaller size for industrial equipment. From the 5th generation IGBT, the lineup has included composite products*1 with a thin profile (NX type) in addition to the previous external shape (standard type). From the S series (6th generation IGBT), there has been additionally offered the T/T1 series (7th generation IGBT), with low power loss and smaller size.

Published on 08/01/19 Read Article
Electric & Hybrid Vehicle Technology Expo

When the first Model T Ford rolled off the Piquette Avenue plant assembly line in Detroit, transportation was revolutionized. Henry Ford had created an affordable automobile millions of people drove every day. Today, transportation is being revolutionized again with the creation and production of electric and hybrid vehicles that are affordable for millions. So, it's fitting that each year engineers, innovators, and thought leaders converge a few miles away from that assembly line for a conference and expo dedicated to the next innovation in transportation. Come be part of today's auto revolution.

Published on 07/22/19 Read Article
Water cooled Isolated SCR Modules

Darrah offers Isolated SCR Modules featuring standard dual SCR modules witg integral water cooled bases. Our improved design has eliminated thermal barriers associated with separate cooling bases. This product line features industry standard dual SCR modules with integral water cooled bases. Our improved design has eliminated thermal barriers associated with separate cooling bases. This has increased current ratings by as much as 15%. In addition, because the Q20008 water connections are directly tapped to the module base, water leaks are virtually eliminated. To further enhance water integrity, each unit is 100% pressure tested at 150 PSI for one minute.

Published on 07/15/19 Read Article
ABB Rectifier/Avalanche diodes

Rectifier diodes are split into two sub-classes: Normal recovery diodes and avalanche diodes. Rectifier diodes are generally used for conversion of AC (alternating current) to DC (direct current). Normal recovery diodes are optimized with respect to low conduction losses and are able to handle very large currents. Avalanche diodes are self-protected against transient over-voltages.

Published on 07/09/19 Read Article
De-excitation/Crowbar Tester for Static Exciters

Darrah’s Portable De-excitation and Crowbar Tester for Static Exciters Avoid Costly Down Time Be confident that your overvoltage and safety circuits are protecting your Thyristor Bridges and Generator Field Insulation. Darrah’s Model DX5K-115A tester is designed to test solid state crowbar and de-excitation modules. The portable tester is used to verify the crowbar and de-excitation voltage protection levels.

Published on 07/02/19 Read Article
Medium voltage 3 Phase AC Switch

Medium voltage 3 Phase AC Switch Up to 4160V –400A - AC Switch Using industry proven Enerpro Fiber Optic MV Firing board with Zero Cross/Phase Control Option Isolated Voltage and Current feedback providing RS485/Modbus communication to your control system or PLC Fiber Optic temperature measurements for Power Assemblies for complete isolation. Available with RS485 or 4-20mA feedback. Designed for ease of maintenance and serviceability Simple installation into your cabinet

Published on 06/26/19 Read Article