Electromagnetic compatibility of technical equipment. Electrical equipment for measurement, control and laboratory use. Part 2-4. Particular requirements for insulation monitoring devices and insulation fault location equipment. Test configurations, operational conditions and performance criteria
Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V. Part 2-6. Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Automatic frequency unloading devices. Norms and requirements
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