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eLibrary >
24/30490272 DC BS EN IEC 63053-2 Residual current operated circuit-breakers for household and similar uses for dc systems - Part 2: Residual current operated circuit breakers without integral overcurrent protection (DC-RCCBs) >
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24/30490272 DC BS EN IEC 63053-2 Residual current operated circuit-breakers for household and similar uses for dc systems - Part 2: Residual current operated circuit breakers without integral overcurrent protection (DC-RCCBs), 2024
- 30490272-NC.pdf
- 23E_1393e_CD.pdf [Go to Page]
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Classification [Go to Page]
- 4.1 According to the supply conditions [Go to Page]
- 4.1.1 DC-RCCB operating correctly on the occurrence of residual current
- 4.1.2 RCCB with 2 or 4 current paths operating correctly on the occurrence of residual current within the voltage range of 1, 1 Ue and 90 V
- 4.1.3 RCCB according to 4.1.2 fitted with a functional earth (FE) and able to continue to provide protection when supplied from just one line and FE [Go to Page]
- 4.1.3.1 Does not open automatically in the case of loss of supply and continues to provide residual current protection in the case of supply from just one line and FE
- 4.1.3.2 Does not open automatically in the case of loss of one line and provides protection by opening automatically if supplied from just one line and FE
- 4.1.4 RCCB operating correctly on the occurrence of residual current within the voltage range 1,1 Ue and Ux
- 4.1.5 RCCB according to 4.1.4, however reclosing automatically after restoration of the supply voltage
- 4.2 According to the possibility of adjusting the residual operating current [Go to Page]
- 4.2.1 DC-RCCB with a single value of rated residual operating current
- 4.2.2 DC-RCCB with multiple settings of residual operating current by fixed steps
- 4.3 According to behaviour of residual direct current type [Go to Page]
- 4.3.1 DC-RCCB Type DC for smooth direct current
- 4.3.2 DC-RCCB Type DC+ for non-smooth direct current
- 4.4 According to time-delay (in presence of a residual current) [Go to Page]
- 4.4.1 DC-RCCB without time-delay: type for general use
- 4.4.2 DC-RCCB with time-delay: type S with time-delay of 0,06 s for selectivity
- 4.5 According to the protection against external influences [Go to Page]
- 4.5.1 Enclosed-type DC-RCCB (not requiring an appropriate enclosure)
- 4.5.2 Unenclosed-type DC-RCCB (for use with an appropriate enclosure)
- 4.6 According to the method of mounting [Go to Page]
- 4.6.1 Surface-type DC-RCCB
- 4.6.2 Flush-type DC-RCCB
- 4.6.3 Panel board type DC-RCCB, also referred to as distribution board type
- 4.7 According to the method of connection [Go to Page]
- 4.7.1 DC-RCCB, the electrical connections of which are not associated with the mechanical mounting
- 4.7.2 DC-RCCB, the electrical connections of which are associated with the mechanical mounting
- 4.8 According to the type of terminals [Go to Page]
- 4.8.1 DC-RCCB with screw-type terminals for external copper conductors
- 4.8.2 DC-RCCB with screwless type terminals for external copper conductors
- 4.8.3 DC-RCCB with flat quick-connect terminals for external copper conductors
- 4.9 According to the number of poles and current paths [Go to Page]
- 4.9.1 Single-pole DC-RCCB with two current paths
- 4.9.2 Two-pole DC-RCCB
- 4.9.3 Two-pole DC-RCCB with three current paths
- 4.9.4 Three-pole DC-RCCB
- 4.10 According to the current direction through the poles [Go to Page]
- 4.10.1 Polarised DC-RCCB
- 4.10.2 Non-polarised DC-RCCB
- 4.11 According to the supply side of the device (directionality) [Go to Page]
- 4.11.1 DC-RCCB to be supplied on one specific side (uni-directional)
- 4.11.2 DC-RCCB to be supplied on any side (bi-directional)
- 5 Characteristics of DC-RCCBs [Go to Page]
- 5.1 Summary of characteristics
- 5.2 Rated quantities and other characteristics [Go to Page]
- 5.2.1 Rated voltages [Go to Page]
- 5.2.1.1 Rated operational voltage (Ue)
- 5.2.1.2 Rated insulation voltage (Ui)
- 5.2.1.3 Rated impulse withstand voltage (Uimp)
- 5.2.1.4 Minimum operating voltage (Ux)
- 5.2.2 Rated direct current (In)
- 5.2.3 Rated direct making and breaking capacity (Im)
- 5.2.4 Rated residual operating direct current (IΔn)
- 5.2.5 Rated residual non-operating direct current (IΔno)
- 5.2.6 Rated residual direct making and breaking capacity (IΔm)
- 5.2.7 Rated conditional short-circuit direct current (Inc)
- 5.2.8 Rated conditional residual short-circuit direct current (IΔc)
- 5.2.9 Operating characteristics in case of residual currents with non-smooth direct currents components [Go to Page]
- 5.2.9.1 DC-RCCB type DC
- 5.2.9.2 DC-RCCB type DC+
- 5.2.10 DC-RCCB type S
- 5.3 Standard and preferred values [Go to Page]
- 5.3.1 Values of rated operational voltage (Ue)
- 5.3.2 Preferred values of rated direct current (In)
- 5.3.3 Standard values of rated residual operating direct current (IΔn)
- 5.3.4 Standard value of residual non-operating direct current (IΔno)
- 5.3.5 Minimum value of the rated residual direct making and breaking capacity (IΔm)
- 5.3.6 Preferred values of the rated conditional short-circuit current (Inc)
- 5.3.7 Preferred values of the rated conditional residual short-circuit current (IΔc)
- 5.3.8 Standard limit values of break time and non-actuating time for DC-RCCBs of type DC and DC+ [Go to Page]
- 5.3.8.1 Standard limit values of break time and non-actuating time for direct residual currents of type DC
- 5.3.8.2 Standard limit values of break time and non-actuating time for direct residual currents of type DC+
- 5.3.9 Standard minimum value of non-operating overcurrent in case of a load through a DC-RCCB with two current paths
- 5.3.10 Standard minimum value of non-operating overcurrent in case of a single-phase load through a three-pole DC-RCCB or a DC-RCCB with three current paths
- 5.3.11 Minimum value of the direct rated making and breaking capacity (Im)
- 5.3.12 Minimum value of the rated residual direct making and breaking capacity (IΔm)
- 6 Marking and other product information [Go to Page]
- 6.1 Requirements for marking and other information
- 7 Conditions for operation in service [Go to Page]
- 7.1 Preferred ranges of application, reference values of influencing quantities/factors and associated test tolerances
- 7.2 Conditions of installation
- 7.3 Pollution degree
- 8 Requirements for construction and operation [Go to Page]
- 8.1 Mechanical design [Go to Page]
- 8.1.1 General
- 8.1.2 Mechanism
- 8.1.3 Clearances and creepage distances [Go to Page]
- 8.1.3.1 General
- 8.1.3.2 Clearances
- 8.1.3.3 Creepage distances
- 8.1.3.4 Solid insulation
- 8.1.3.5 Additional requirements for control circuits connected to the main circuit
- 8.1.4 Screws, current carrying parts and connections [Go to Page]
- 8.1.4.1 Connections
- 8.1.4.2 Screws in engagement with a thread of insulating material
- 8.1.4.3 Electrical connections
- 8.1.4.4 Current-carrying parts
- 8.1.5 Terminals for external conductors [Go to Page]
- 8.1.5.1
- 8.1.5.2
- 8.1.5.3
- 8.1.5.4
- 8.1.5.5
- 8.1.5.6
- 8.1.5.7
- 8.1.5.8
- 8.1.5.9
- 8.1.5.10
- 8.1.5.11
- 8.1.5.12
- 8.2 Protection against electric shocks
- 8.3 Dielectric properties and isolating capability
- 8.4 Temperature rise [Go to Page]
- 8.4.1 General
- 8.4.2 Temperature-rise limits
- 8.4.3 Ambient air temperature
- 8.5 Operating characteristics [Go to Page]
- 8.5.1 General
- 8.5.2 Operation in response to DC residual current [Go to Page]
- 8.5.2.1 General
- 8.5.2.2 Residual smooth direct currents
- 8.5.2.3 Residual non-smooth direct currents
- 8.5.3 Operation in presence of a residual current equal to and greater than IΔn [Go to Page]
- 8.5.3.1 DC-RCCBs without time-delay
- 8.5.3.2 DC-RCCBs with time-delay
- 8.6 Mechanical and electrical endurance
- 8.7 Performance at short-circuit and small direct currents
- 8.8 Resistance to mechanical shocks and impact
- 8.9 Resistance to heat
- 8.10 Resistance to abnormal heat and to fire
- 8.11 Test device
- 8.12 Requirements for DC-RCCBs in case of loss of supply
- 8.13 Behaviour of DC-RCCBs in case of overcurrent in the main circuit
- 8.14 Behaviour of DC-RCCBs in case of current surges caused by impulse voltages
- 8.15 Reliability
- 8.16 Electromagnetic compatibility (EMC)
- 8.17 Resistance to temporary overvoltage (TOV)
- 8.18 Resistance to rusting
- 8.19 Behaviour in case of making inrush current
- 8.20 Requirements for electronic components
- 8.21 Standing current in the FE under normal conditions
- 8.22 Standing current in the FE in case of DC-RCCB supplied from just one line and FE
- 9 Tests [Go to Page]
- 9.1 General
- 9.2 Test conditions
- 9.3 Test of indelibility of marking
- 9.4 Test of reliability of screws, current-carrying parts and connections
- 9.5 Test of reliability of screw-type terminals for external copper conductors [Go to Page]
- 9.5.1
- 9.5.2
- 9.5.3
- 9.5.4
- 9.6 Verification of protection against electric shock
- 9.7 Test of dielectric properties [Go to Page]
- 9.7.1 Resistance to humidity [Go to Page]
- 9.7.1.1 Preparation of the DC-RCCB for test
- 9.7.1.2 Test conditions
- 9.7.1.3 Test procedure
- 9.7.1.4 Condition of the DC-RCCB after the test
- 9.7.2 Insulation resistance of the main circuit
- 9.7.3 Dielectric strength of the main circuit
- 9.7.4 Insulation resistance and dielectric strength of auxiliary circuits
- 9.7.5 Secondary circuit of detection transformers
- 9.7.6 Capability of control circuits connected to the main circuit withstanding high d.c. voltages due to insulation measurements
- 9.7.7 Verification of impulse withstand voltages [Go to Page]
- 9.7.7.1 General testing procedure for the impulse withstand voltage tests
- 9.7.7.2 Verification of clearances with the impulse withstand voltage
- 9.7.7.3 Verification of resistance of the insulation of open contacts against an impulse voltage (suitability for isolation)
- 9.8 Test of temperature-rise [Go to Page]
- 9.8.1 Ambient air temperature
- 9.8.2 Test procedure
- 9.8.3 Measurement of the temperature of parts
- 9.8.4 Temperature-rise of a part
- 9.9 Verification of the operating characteristics [Go to Page]
- 9.9.1 Verification of the operating characteristics under residual current conditions [Go to Page]
- 9.9.1.1 Test circuit and test procedure
- 9.9.1.2 Test for all DC-RCCBs [Go to Page]
- 9.9.1.2.1 Steady increase of the residual current
- 9.9.1.2.2 Closing on a residual current
- 9.9.1.2.3 Sudden appearance of residual current
- 9.9.1.2.4 Residual current higher than 3 IΔn
- 9.9.1.2.5 Tests with load
- 9.9.1.2.6 Tests at the temperature limits
- 9.9.1.3 Additional tests at minimum voltage
- 9.9.1.4 Verification of the correct operation of DC-RCCBs classified according to 4.1.3
- 9.9.1.5 Additional test for DC-RCCBs classified according 4.9.3 or 4.9.4
- 9.10 Verification of mechanical and electrical endurance [Go to Page]
- 9.10.1 General test conditions
- 9.10.2 Test procedure
- 9.10.3 Condition of the DC-RCCB after test
- 9.11 Tests of behaviour of the DC-RCCB under short-circuit conditions [Go to Page]
- 9.11.1 List of the short-circuit tests
- 9.11.2 Short-circuit tests [Go to Page]
- 9.11.2.1 General conditions for test
- 9.11.2.2 Verification of the rated making and breaking capacity (Im)
- 9.11.2.3 Verification of the rated residual making and breaking capacity (IΔm) of DC-RCCBs and their suitability for use in IT systems
- 9.11.2.4 Verification of the coordination between the DC-RCCB and the SCPD
- 9.11.2.5 Verification of small direct currents
- 9.12 Verification of resistance to mechanical shock and impact [Go to Page]
- 9.12.1 Mechanical shock [Go to Page]
- 9.12.1.1 Test procedure
- 9.12.2 Mechanical impact [Go to Page]
- 9.12.2.1 General
- 9.12.2.2 Test for all DC-RCCBs
- 9.12.2.3 Test for DC-RCCBs intended to be mounted on a rail
- 9.13 Test of resistance to heat [Go to Page]
- 9.13.1 Test on complete DC-RCCB
- 9.13.2 Ball pressure test
- 9.14 Test of resistance to abnormal heat and to fire
- 9.15 Verification of the trip-free mechanism [Go to Page]
- 9.15.1 General test conditions
- 9.15.2 Test procedure
- 9.15.3 Additional test procedure for DC-RCCBs according to 4.1.4 and 4.1.5
- 9.16 Verification of the operation of the test device at the limits of rated operational voltage
- 9.17 Verification of the behaviour of DC-RCCBs in case of loss of the supply voltage [Go to Page]
- 9.17.1 Verification of the behaviour of DC_RCCBs classified under 4.1.4 and 4.1.5 [Go to Page]
- 9.17.1.1 Verification of correct operation at the minimum operating voltage (Ux)
- 9.17.1.2 Verification of the automatic opening in the event of loss of the supply voltage
- 9.17.1.3 Verification of the correct operation, in the presence of a residual current, for DC-RCCBs opening with delay in the event of loss of the supply voltage
- 9.17.1.4 Verification of the reclosing function of automatically reclosing DC-RCCBs classified according to 4.1.5
- 9.17.2 Verification of not opening in the event of loss of the supply voltage (DC-RCCB classified according 4.1.2 and 4.1.3)
- 9.18 Verification of the behaviour of DC-RCCBs in case of overcurrent in the main circuit
- 9.19 Verification of the behaviour of DC-RCCBs in case of current surges caused by impulse voltages [Go to Page]
- 9.19.1 Current surge test for all DC-RCCBs (0,5 s/100 kHz ring wave test)
- 9.19.2 Verification of the behaviour at surge currents up to 3 000 A (8/20 s surge current test) [Go to Page]
- 9.19.2.1 Test conditions
- 9.19.2.2 Test results for S type DC-RCCBs
- 9.19.3 Test results for PCBMs of the general type
- 9.20 Verification of reliability [Go to Page]
- 9.20.1 Climatic test [Go to Page]
- 9.20.1.1 Testing chamber
- 9.20.1.2 Severity
- 9.20.1.3 Test procedure
- 9.20.1.4 Recovery
- 9.20.1.5 Final verification
- 9.20.2 Test with temperature of 40 C
- 9.21 Verification of withstand against ageing
- 9.22 Electromagnetic compatibility (EMC) [Go to Page]
- 9.22.1 Electromagnetic emission of DC-RCCBs
- 9.22.2 Electromagnetic immunity of DC-RCCBs [Go to Page]
- 9.22.2.1 General
- 9.22.2.2 Voltage dips and voltage interruptions (T 1)
- 9.22.2.3 Conducted disturbances, induced by radio-frequency fields (T 3)
- 9.22.2.4 Fast transient/burst (T 4)
- 9.22.2.5 Surges (T 5a and T 5b)
- 9.22.2.6 Radiated radio-frequency electromagnetic field (T 6)
- 9.22.2.7 Conducted, common mode disturbances in the frequency range 0 Hz to 150 kHz (T 7)
- 9.22.2.8 Electrostatic discharges (T 8)
- 9.22.2.9 Ripple immunity (T 9)
- 9.22.2.10 Performance criteria for DC-RCCBs
- 9.23 Test of resistance to rusting
- 9.24 Verification of the behaviour of the DC-RCCBs under temporary over voltage (TOV) conditions [Go to Page]
- 9.24.1 General
- 9.24.2 TOV test for all DC-RCCBs
- 9.24.3 Additional tests for DC-RCCBs with a terminal intended to be connected to the PE
- 9.24.4 Verification after the tests
- 9.25 Requirements and tests for electronic components
- 9.26 Test of the maximum connecting capacity of FE terminal [Go to Page]
- 9.26.1 Test procedure
- 9.26.2 Construction of gauges
- 9.27 Verification of the limitation of the standing current in the FE [Go to Page]
- 9.27.1 Test circuit
- 9.27.2 Verification of the standing current in the FE under normal conditions
- 9.27.3 Verification of the standing current in the FE when the DC-RCCB is supplied from just one line chosen at random and FE
- Annex A (normative) Test sequence and number of samples to be submitted for certification purposes [Go to Page]
- A.1 Test sequences
- A.2 Number of samples to be submitted for full test procedure
- A.3 Number of samples to be submitted for simplified test procedures if submitting simultaneously a range of DC-RCCBs of the same fundamental design
- Annex B (normative) Determination of clearances and creepage distances [Go to Page]
- B.1 General
- B.2 Orientation and location of a creepage distance
- B.3 Creepage distances where more than one material is used
- B.4 Creepage distances split by floating conductive part
- B.5 Measurement of creepage distances and clearances
- Figure B.1 – Examples of methods of measuring creepage
- Annex C (normative) Arrangement for the detection of the emission of ionized gases during short-circuit tests
- Annex D (normative) Routine tests [Go to Page]
- D.1 General
- D.2 Tripping test
- D.3 Dielectric strength test
- D.4 Performance of the test device
- Annex E (informative/normative) Void
- Annex F (informative/normative) Void
- Annex G (informative/normative) Void
- Annex H (informative) Examples of terminal designs
- Annex I (informative) Correspondence between ISO and AWG copper conductors
- Annex J (informative) Follow-up testing program for DC-RCCBs [Go to Page]
- J.1 General
- J.2 Follow-up testing program [Go to Page]
- J.2.1 General
- J.2.2 Quarterly follow-up testing program
- J.2.3 Annual follow-up testing program
- J.2.4 Sampling procedure [Go to Page]
- J.2.4.1 Quarterly testing program
- J.2.4.2 Annual testing program
- J.2.4.3 Number of samples to be tested
- Annex K (informative) SCPDs for short-circuit tests [Go to Page]
- K.1 Introductory remark
- K.2 Silver wires
- K.3 Fuses
- K.4 Other means
- Bibliography [Go to Page]
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