Ri4Power Operation and maintenance and maintenance of the low-voltage switchgear enclosure The manufacturer of the low-voltage switchgear combination in writing and give it to the operator. must define the required measures for installation, commis- sioning Notes on the use of aluminium cables Step 3: Aluminium cable on terminal SV 9650.325/9640.325 Immediately after preparing the conductor, it should be con- nected to the conductor connection clamp using the rated The conductor connection clamp may be used for connect- torque. ing single- and multi-wire round conductors of copper or aluminium from 95 – 300 mm2. For connecting aluminium Step 4: conductors, the following work steps must be observed: One day later, check the connected conductors to ensure that they are firmly seated, and if necessary, check the Step 1: torque. The surface of the aluminium conductor should be cleaned to remove any dirt and, above all, the oxide layer. Step 5: The connection points must be monitored with recurrent Step 2: inspections of the entire switchgear. It is expedient, Immediately after removing the oxide layer, the clean con- for example, to use thermographic images or resistance ductor surface is coated using an acid- and alkaline-free measurements for monitoring purposes. grease such as technical vaseline (e.g. contact protection paste P1 made by Pfisterer). This prevents the formation of a new layer of oxide. List of design verifications to be obtained Table 13: Design verifications in detail Available verification choices IEC/EN 61 439-1 No. Features to be verified Verification Verification VerificationChapter by testing by calculation by design rules 1 Strength of materials and parts 10.2 Corrosion resistance 10.2.2 Yes No No Properties of insulating materials 10.2.3 Thermal stability 10.2.3.1 Yes No No Resistance to abnormal heat 10.2.3.2 Yes No No Resistance to exceptional heat and fire due to 10.2.3.3 Yes No No internal electrical effects Resistance to UV radiation 10.2.4 Yes No No Lifting 10.2.5 Yes No No Mechanical impact test 10.2.6 Yes No No Markings 10.2.7 Yes No No 2 Degree of protection of enclosures 10.3 Yes No No 3 Clearance and creepage distances 10.4 Yes Yes Yes 4 Protection against electric shock and integrity 10.5 of protective circuits Effective continuity between the exposed conductive parts of the ASSEMBLY and the 10.5.2 Yes No No protective circuit Short-circuit withstand strength of the protective 10.5.3 Yes Yes Yes circuit 5 Incorporation of switching devices and components 10.6 No No Yes 6 Internal electrical circuits and connections 10.7 No No Yes 7 Terminals for external conductors 10.8 No No Yes 8 Dielectric properties 10.9 Power-frequency withstand voltage 10.9.2 Yes No No Impulse withstand voltage 10.9.3 Yes No Yes 9 Temperature-rise limit 10.10 Yes Yes Yes 10 Short-circuit withstand strength 10.11 Yes Yes Yes 11 Electromagnetic compatibility (EMC) 10.12 Yes No Yes 12 Mechanical operation 10.13 Yes No No 2 - 61 Rittal Technical System Catalogue/Power distribution
Technical System Catalogue Ri4Power
To see the actual publication please follow the link above