DIN EN 54-4:2015 pdf free download.Fire detection and fire alarm systems- Part 4: Power supply equipnent. If the PSE is housed in other equipment, manual controls, fuses, calibration elements etc. for disconnection and adjustment of the power sources shall be accessible only at AL3 or AL4 of EN54-2orEN54-16,orbytheuseofatoolorkey. The PSE may be distributed in which case 4.2.5.2 to 4.2.5.7 shall...
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