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Practical guide for the design, installation, adjustment and operation of electrical installations for residential, industrial and public buildings with the use of protective shutdown devices (RCDs)


1 area of ​​use
2. Electrical safety system
2.1. General Provisions
2.2. Electrical safety criteria
2.3. Basic principles of protection against electrical shock
2.4. Classification of premises by the degree of danger of electric shock to people
2.5. Classification of electrical and electronic equipment by the method of protection from electric shock
3. RCD - effective fire and electrical protective means
3.1. General Provisions
3.2. The operating principle of the RCD
3.3. Types of RCDs
4. Technical parameters of residual current devices
4.1. Normalized RCD parameters
4.2. Requirements for design, electrical parameters
5. Selection of RCDs in the design and installation of electrical installations
5.1. General requirements
6. Analysis of the electrical diagram of the electrical installation
6.1. General Provisions
6.2. Location and setting of the RCD
6.3. Features of RCD application for various earthing systems
6.4. Application of RCDs in the TN grounding system
6.5. Connection of protective conductors PE. Equipotential bonding
6.6. Circuit diagrams of RCD in building electrical installations
7. Calculation check of operating modes of electrical installation
7.1. General Provisions
7.2. Calculation of the maximum and minimum expected short-circuit current
7.3. Protection against overcurrent currents
8. Documentation for RCDs
9. Selection of the type and parameters of the RCD
9.1. General Provisions
9.2. Rated voltage U n
9.3. Rated load current I n
9.4. Rated breaking differential current I D n (setpoint)
9.5. Rated non-closing differential current I D n0
9.6. Limit value of non-switching overcurrent I nm
9.7. Rated switching and breaking capacity (switching capacity) I m
9.8. Nominal switching and breaking capacity for differential current I D m
9.9. Nominal conditional short-circuit current I nc
9.10. Nominal conditional differential short-circuit current I D s
9.11. Rated breaking time T n
9.12. Temperature conditions
9.13. Degree of protection
9.14. Circuit diagrams for RCDs
9.15. RCD types AS, A and B
10. Coordination of protective devices
11. Selectivity of RCD operation
12. Insulation monitoring, detection of faults
13. Principles of performing surge protection
13.1. General Provisions
13.2. Technical parameters of overvoltage protection devices
14. Installation and operation of RCDs in electrical installations
14.1. Installation of RCDs
14.2. RCD operational control
14.3. Procedure for testing the operation of the RCD
15. Analysis of the causes of operation of the RCD and an algorithm for troubleshooting the electrical installation
16. Procedure for RCD control in the certification of electrical installations
16.1. Inspection of technical documentation for RCDs
16.2. Verification of the correct choice of the installation site and RCD parameters in the electrical installation diagram
16.3. Checking the correct installation of the RCD
16.4. Testing of RCD serviceability
16.5. Security measures
16.6. Documentation of RCD control (Protocol)
Appendix 1. The list of buildings, structures and enterprises, electrical installations of which are certified in accordance with the Rules "Certification systems for electrical installations of buildings"
Appendix 2. Normative documents
Appendix 3. Schemes of electrical installations of buildings with the use of RCDs
Appendix 4. Methodology for determining the threshold for tripping RCD, measuring the leakage current in the RCD protection zone, detecting defective circuits of the electrical installation
Appendix 5. The procedure for testing the operation of the RCD in the electrical installation of the building
Appendix 6. Test report for RCDs

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