Iec 60815-2 Pdf Jun 2026

Over-dimensioning insulators results in bloated procurement costs and massive structural supports. Under-dimensioning leads to blackouts. The standard provides the exact mathematical balance required for optimal cost-to-performance ratios.

The IEC 60815 series of Technical Specifications includes several other parts that complement Part 2:

It is crucial to note that .

: It defines five classes of pollution severity, ranging from "Very Light" to "Very Heavy." This allows engineers to categorize a substation or transmission line location based on measured data like Equivalent Salt Deposit Density (ESDD) or directional dust moisture.

| SPS Class | Typical Environment | ESDD (mg/cm²) | Recommended USCD (mm/kV) | |-----------|---------------------|---------------|--------------------------| | | No industrial, inland, low density housing | < 0.03 | 16 – 20 | | b – Medium | Industrial areas, moderate coastal | 0.03 – 0.10 | 20 – 25 | | c – Heavy | Heavy industry, high coastal salt, desert with dust | 0.10 – 0.60 | 25 – 31 | | d – Very Heavy | Desert with salt/conductive dust, sea spray, high ESDD | 0.60 – 2.0 | 31 – 43+ | iec 60815-2 pdf

IEC 60815-2 is a part of the IEC 60815 series, which provides guidelines for the selection of current-limiting fuses. Specifically, this part of the standard deals with the selection of fuses for applications where the fault current is limited by the fuse itself. The standard provides recommendations for the proper selection of fuses to ensure safe and reliable operation of electrical systems.

Engineers multiply this value by the maximum operating voltage to find the total minimum creepage distance needed for the insulator string or post. 3. Profile Optimization and Parameters The IEC 60815 series of Technical Specifications includes

I can walk you through the math or help you determine your Site Pollution Severity class. Share public link

No, this part is specifically for AC systems. Insulators for DC systems are covered by IEC TS 60815-4 and IEC TS 60815-5 . Specifically, this part of the standard deals with

IEC 60815-2 provides a baseline minimum USCD required for each pollution class to prevent a power-frequency flashover: Pollution Description Minimum Baseline USCD (mm/kV) Very Light B C D E Very Heavy Insulator Profile Correction Factors