Special tests are performed only if agreed upon between the manufacturer and the purchaser. Examples include: Chopped impulse tests. Mechanical tension tests on terminals. Corrosion tests on enclosures. Digital Evolution: Preparing for the Smart Grid
The series was created to replace the older IEC 60044 standards, moving toward a more modular structure. A full standard for a specific product is composed of plus the specific part for that device.
is the latest international standard that defines general requirements for instrument transformers intended for high-voltage applications . As a "Product Family" standard, it serves as the foundational document that must be used alongside specific product standards (like Part 2 for current transformers or Part 3 for inductive voltage transformers) to ensure equipment safety and reliability. Scope and Application
: Nominal voltages higher than 1 kV AC or 1.5 kV DC . Iec 61869-1 Pdf
Covers modern electronic, optical, and low-power technologies (LPITs) designed for digital substations. The Component Map: IEC 61869-1: General requirements (The foundation)
Simulates atmospheric surges (lightning strikes) to ensure the grid remains protected.
Additional requirements for combined transformers Special tests are performed only if agreed upon
They use the routine test guidelines to build factory testing protocols, ensuring compliance before equipment leaves the facility.
Organizations like ANSI (USA), BSI (UK), DIN (Germany), or ISO members resell authorized copies of the standard, often translated or adapted to local national standards (e.g., BS EN IEC 61869-1).
Standard ranges from -5 °C to +40 °C for indoor use, and harsher ranges for outdoor use. Corrosion tests on enclosures
Routine tests are performed on manufactured before it leaves the factory.
IEC 61869-1 is the first part of the IEC 61869 series on instrument transformers, officially titled "Instrument transformers – Part 1: General requirements" . The standard applies to newly manufactured instrument transformers intended for applications with a nominal voltage higher than 1 kV AC or 1.5 kV DC. These transformers produce either an analog or digital secondary signal for measuring, protection, and control purposes, and they can operate with rated frequencies spanning from 15 Hz to 400 Hz, as well as in DC applications.
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Verifying mechanical and thermal endurance during a grid short-circuit event.