Outline for Type Evaluation of Measuring Transformers - Part 2: Scope of Standard Voltage Transformers - This outline is applicable to type evaluation tests of standard voltage transformers with a rated frequency of 50 Hz (or 60 Hz), a rated primary voltage of 1 kV or above, and an accuracy level of 0.001-0.1. This outline cites the following documents: JJG 314 Voltage Transformers for Measurement GB/T 311.1 Insulation Coordination Part 1: Definitions Principles and Rules GB/T1226 General Pressure Gauges GB/T4857.3 Basic Tests for Packaging and Transport Packaging Components Part 3: Static Load Stacking Test Methods GB/T 4857.10 Basic Tests for Packaging and Transport Packaging Components Part 10: Sinusoidal Variable Frequency Vibration Test Method B/T 11023 High Voltage Switchgear Sulfur Hexafluoride Gas Sealing Test Method GB/T 20840.1 Transformer Part 1: General Technical Requirements DL/T 617 Technical Conditions for Gas Insulated Metal Enclosed Switchgear SJ3213-1 General electronic products - Basic test methods for transportation packaging - Automobile transportation testing - JB/T 5357 Guidelines for voltage transformer testing - Note: For dated reference documents, only the dated version applies to this specification; for undated reference documents, the latest version (including all modifications) applies to this specification
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