High voltage factory-assembled switch gear. Part 101. AC High Voltage Circuit Breakers
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Metering potential transformers. Type test program for purposes of type approval
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Main pipeline gas transportation MANUAL FOR OPERATION, DIAGNOSTICS AND REPAIR OF FIBER-OPTICAL COMMUNICATION LINES (FOCL)
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Power transformers. Part 10-1. Determination of noise level. User guide.
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Power transformers. Part 1. General provisions
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Power transformers. Part 2. Temperature heating of transformers immersed in liquid
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Power transformers. Part 3: Insulation levels. Dielectric strength test. Outdoor air gaps
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Power transformers. Part 5. Short circuit resistance
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Surge arresters. Part 1. Spark arresters with nonlinear resistors for AC systems
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Tap changer. Part 1. Requirements for operating characteristics and test methods
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Fluids for electrical applications UNUSED MINERAL INSULATING OILS FOR TRANSFORMERS AND CIRCUIT BREAKERS
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Electric equipment impregnated with mineral oil during operation. Guidance on the interpretation of the results of the analysis of free and dissolved gases
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