Electric Power Facilities With Bestact
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Bestact for Electric Power Facilities ER ENVIRONMENTAL SYSTEM

Bestact’s high reliability provides stability for electrical utility applications. Since Bestact, a hermetically sealed glass contact power reed switch; was placed in service over 30 years ago; over 18 million have been used worldwide in applications such as transit train control, elevators and electric power facilities. High reliability is a fundamental requirement for electric transmissions lines with voltages of 500kV, long-distance power distribution monitoring systems and the electric substation facilities of railway/transit applications with around the clock stability. These...

Protective relays for monitoring distribution control systems Monitoring the state of distribution lines is a requirement for stable electric power supply. Protective relays are used as a reply relay in the mobile unit of the monitoring control system for long-distance power distribution lines that provide detecting function of ground faults and short circuit faults. The mobile unit is mounted on the electric pole and operates the switch via long-distance control from the branch office, so faults can be detected early. Relays incorporating Bestact are often used for this application....

ON / OFF confirmation (disconnect switch) This switch provides indication of the ON or OFF state of disconnect switches to the power distribution board correctly, and plays a vital role for safe operation for maintenance workers. ■Features of the switch incorporated Bestact that confirm ON / OFF operation 1) No trouble in the mechanism because there are no moving parts to wear out. 2) Extremely high contact reliability. 3) Very strong for adverse environments (dust, corrosion gas, rain water, salt damage, etc.) as sealed with   an inert gas 4) Long life Breakers mounted indoor / outdoor...

Features of Bestact Highly Reliable Contact Employing New Materials and Innovative Designs such as Wiping and Hammering Action, Bifurcated Contact and Back-Stop Mechanism. ■CONSTRUCTION AND OPERATING MECHANISM 1.Sealed with an inert gas, ensuring freedom from aging and influences exerted by an adverse environment. 2.The twin contact and wiping effect assures outstanding contact reliability. 3.Hammering action and back-stop mechanism permits a larger make and break capacity and longer service life. MOVABLE CONTACT MAGNETIC MEMBERS TERMINAL BACKSTOP MECHANISM RETURN SPRING HINGE POINT BENT...

Electrical Utility Usage Over 2 million installed units from 1981 to April, 2007. Application Trip relay for breaker Product Type ・Relay mounted on PCB  RI-B14T series  RZDR-DT series  RZDR-HT series ・Plug-in type relay  RB-2PT series ・Fixed type relay  RB-2DT series Approx. Accumulated Main Customer ・Mitsubishi ・Hitachi ・Toshiba ・Fuji Electric Systems ・Meidensha ・Takaoka ・Nissin ・Yokogawa Electric ※End user ・Domestic and foreign electric  power companies ・Japan Railways ・Private railway companies ・Yaskawa Electric ・KYUKI ・Seiko Electric ・Nishimu Electronics ・Relay mounted on PCB  RI-B14T1...

High Reliability, Inherent in Stringent Quality Control Bestact products are manufactured in the most advanced facilities, utilizing the expertise we have gained from years of ongoing research and development as well as empirical field data under a stringent quality control system. As example of this would be our production equipment, which automatically adjusts the spring load to the optimum value, thereby maximizing contact life and reliability. Quality management on the Bestact production line Order processing, production management Parts procurement Mechanical processing Raw materials...

•Before initial operation, read through the product's instruction manual and other attached documents) thoroughly and use the product properly. •Although the product is produced under strict quality control, you must apply a safety device if the product is applied to a machine for which malfunction can risk human life or may seriously damage facility. •Wiring must be done by an expert of electrical wiring. •Do not modify the product under any circumstances. ■Warranty Period The warranty period for a product that was purchased is one year from the time of delivery to the location specified...