Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: EN 61869-1:2009
• Năm ban hành / Publication date: 2009
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Instrument transformers - Part 1: General requirementsIEC 61869-1:2007 (Modified)
• Phạm vi áp dụng / Scope of standard: This International Standard is applicable to newly manufactured instrument transformers with analogue or digital output for use with electrical measuring instruments or electrical protective devices having rated frequencies from 15 Hz to 100 Hz. This standard is a product family standard and covers general requirements only. For each kind of instrument transformer the product standard is composed by this standard and the relevant specific standard.