What is BS EN 61643-351 - Components for low-voltage surge protective devices about?
BS EN 61643 is a series on components for low-voltage surge protective devices. Components for low-voltage surge protective devices is appliances or device intended to protect electrical devices from voltage spikes in alternating current (AC) circuits. BS EN 61643-351 covers surge isolation transformers whose rated impulse withstand voltage coordinates with the expected surge environment of the installation. This type of surge protective component, SPC, isolates and attenuates transient voltages in conjunction with current diverting components (e.g., GDT, MOV, etc.) or surge protective devices (SPDs). BS EN 61643-351 can be used in SPDs.
Note: BS EN 61643-351 does not cover SIT operation under differential-mode lightning surge conditions.
Who is BS EN 61643-351 - Components for low-voltage surge protective devices for?
BS EN 61643-351 on components for low-voltage surge protective devices is useful for:
- Telecommunication component manufacturers
- Telecommunication equipment manufacturers
- Design engineers
- Quality control personnel
Why should you use BS EN 61643-351 - Components for low-voltage surge protective devices?
Components for low-voltage surge protective devices attempts to limit the voltage supplied to an electric device by either blocking or shorting current to reduce the voltage below a safe threshold. BS EN 61643-351 discusses Surge isolation transformers (SITs) are used for signal transformer applications with signal levels up to 400 V Peak to peak. Surge isolation transformers are transformers, with or without an internal-winding screen, with a rated impulse withstand voltage greater than the peak voltage of the expected common-mode surge environment. Surge isolation transformers are applied to components for surge protection against indirect and direct effects of lightning or another transient overvoltage. Surge isolation transformers are used to mitigate the onward propagation of common-mode voltage surges.
BS EN 61643-351 defines test circuits and test methods for determining and verifying the Surge isolation transformers surge parameters. Preferred performance values for key parameters are given. BS EN 61643-351 specifies the application information which is available in a product datasheet that contains rated impulse withstand voltage and signal performance. Markings that are mandatory on the body, or permanently attached to the body which consists of the manufacturer's name or trademark and model number, traceability information and microclimate (if applicable) is also included in BS EN 61643-351. Using BS EN 61643-351 you can understand surge isolation transformers whose rated impulse withstand voltage coordinates with the expected surge environment of the installation.
