quadrivalve การใช้

• On 24 June 1990, during the commissioning of the scheme, a complete quadrivalve of the Rihand CIGR?publishing guidelines on the design of thyristor valves in order to reduce fire risks.
• On 29 May 1989, a complete quadrivalve in converter 5 of the Foz do Igua鐄 converter station was destroyed by a fire which started as a result of a water leakage from a cooling pipe.