Elements of electrical and optical connection. Test methods-Electrical elements. Measurement of turns ratio on a transformer used in a coupler
电气和光学连接元件 测试方法

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Test Method for Balance Ratio of 75-300 Ohm Matching Transformer
75-300欧姆匹配变压器平衡比的试验方法

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Calibration Specification for Electronic Instrument Transformers Test Set

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Calibration Specification for Transformer Merging Unit Test Set

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直流互感器校验仪通用技术条件
General technical specification of DC instrument transformers test set

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General technical requirement of instrument transformer error test sets

2013-11-28

Aerospace series - Elements of electrical and optical connection; Test methods - Part 704: Electrical elements; Measurement of turns ratio on a transformer used in a coupler; German and English version EN 2591-704:2001
航空航天系列.电气和光学连接件；试验方法.第704部分:电气元件；测量耦合器中所用变压器的匝数比；德语和英语版本EN 2591-704:2001

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Technical requirement of electronic current and voltage transformer error test sets

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Standardized set of test conditions and measurement procedures for the subjective and objective determination of protection ratios for television in the terrestrial broadcasting and the broadcasting-satellite services
地面广播和广播卫星服务中电视保护率的主观和客观测定的标准试验条件和测量程序集

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