T/CI 110-2023 High Precision Instrument Measurement Port Protection Circuit Specification

Scope

Main technical content: This document specifies the terms and definitions, symbols, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage for the protection circuits of high-precision instrument measurement ports. This document is applicable to measurement/output voltage levels of -210V to +210V DC. Corresponding current measurements and current sources can be referenced for use. This document is applicable to switching power supplies with bidirectional energy flow. 5. Technical Requirements 5.1 Environmental and Use Requirements 5.1.1 Temperature - Indoor type: Operating temperature range: -20°C to 40°C. - Outdoor type: Ambient temperature range: -25°C to 60°C. - Storage temperature: -30°C to 70°C. 5.1.2 Humidity - Indoor type: Relative humidity range: 5% to 65%, without condensation. - Outdoor type: Relative humidity range: 4% to 90%, without condensation. 5.1.3 Altitude - Altitude should not exceed 4000m; for altitudes greater than 4000m, consideration should be given to the decrease in electrical dielectric strength. 5.2 Shell Mechanical Strength - Apply a force equivalent to 25kg evenly over a 20cm×30cm area on any surface of the shell. There should be no obvious plastic deformation on the surface. 5.3 Protection Level - The precision source table port protection device shall at least meet IP20 requirements. 5.4 Appearance Quality - a) The outer surface shall be smooth, without obvious scratches, deformations, or other defects. The surface coating shall be uniform. - b) The nameplate and markings shall be installed upright and firmly, with clear characters. - c) The components shall be securely fastened without rust, burrs, cracks, or other defects or damage. 5.5 Noise - Under rated conditions, the noise of the indoor precision source table port protection device at a horizontal distance of 1m from the device shall not exceed 65dB, and that of the outdoor device shall n

Development Information

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