High voltage test techniques. Measurement of partial discharges by electromagnetic and acoustic methods not-for-sale BS 4651-1 provides you with

BS 4651-1  provides you with the reagents and apparatus required for the test method

giving performance requirements for fire safety cabinets used for storing pressurised gas cylinders

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BS EN 3727 provides you guidance on quality assurance

High voltage test techniques. Measurement of partial discharges by electromagnetic and acoustic methods not-for-sale BS 4651-1 provides you with1 Scope This document is applicable to electromagnetic (HF VHF UHF) and acoustic measurements of PDs which occur in insulation of electrical apparatus. This specification deals with a large variety of applications, sensors of different frequency ranges and differing sensitivities. The tasks of PD location and measuring system calibration or sensitivity check are also taken into account.