Overview
IEC 60358-4:2018 is an international standard published by the International Electrotechnical Commission (IEC) that specifies requirements for DC and AC single-phase capacitor dividers. These capacitor dividers are connected between line and ground and are primarily used in manufacturing Voltage Transformers, among other applications. As part 4 of the IEC 60358 series titled Coupling capacitors and capacitor dividers, this standard must be used in conjunction with IEC 60358-1, which provides general rules. IEC 60358-4:2018 replaces the second edition IEC 60358 (1990) and introduces technical revisions ensuring alignment with modern manufacturing and application needs.
Key Topics
- Scope of Application: Covers single-phase capacitor dividers used between line and ground, designed for both DC and AC voltages. Focus is on their use in Voltage Transformer manufacturing and related applications.
- Type and Classification: Defines different types of capacitor dividers, such as capacitor voltage dividers (C-Divider), resistor-capacitor voltage dividers (R-C Divider, C-R Divider, R-C-R Divider) highlighting design variations involving capacitors and resistors.
- Voltage Ratings and Parameters: Specifies rated primary and secondary voltages, rated capacitances, as well as rated series and parallel resistances critical for manufacturing and testing.
- Design and Test Requirements: Details design rules, service conditions, and testing protocols including routine, type, and special tests relevant for performance evaluation and safety compliance.
- Terminology: Defines important terms such as voltage divider, rated primary/secondary voltage, and components within the divider including high-voltage and intermediate voltage capacitors to standardize communication.
Applications
IEC 60358-4:2018 plays a key role in ensuring the reliability and safety of voltage measurement systems by regulating single-phase capacitor dividers. Common applications include:
- Voltage Transformers Manufacturing: Capacitor dividers are integral in constructing voltage transformers that provide accurate voltage scaling and measurement in power systems.
- Power Quality and Monitoring: Used in equipment responsible for voltage measurement, capacitor dividers ensure precise monitoring of power systems for effective control and protection.