GB - Chinese national standards

Technical requirements of digital SPC automatic telephone exchange

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Power quality - Three-phase voltage unbalance

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Short-circuit current calculation in three-phase a.c. systems—Part 1: Calculation of currents

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Short-circuit current calculation in three-phase a.c. systems—Part 2: Factors for the calculation of short-circuit currents

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Short-circuit current calculation in three-phase a.c.systems—Part 3:Data of electrical equipment

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Short-circuit current calculation in three-phase a.c.systems—Part 4: Currents during two separate simultaneous line-to-earth short circuits and partial short-circuit currents flowing through earth

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Short-circuit current calculation in three-phase a.c.systems—Part 5: Examples

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General rules for packing, marking, transport, storage and quality certificates of unshaped refractory

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Terms of mill rolls

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Blanks of forged steel rolls for cold rolling mill

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