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BS EN IEC 55012:2025 Vehicles, boats and devices with internal combustion engines or traction batteries. Radio disturbance characteristics. Limits and methods of measurement for the protection of off-board receivers, 2025
- undefined
- European foreword
- Endorsement notice
- Annex ZA (normative) Normative references to international publications with their corresponding European publications [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and abbreviated terms [Go to Page]
- 3.1 Terms and definitions
- 3.2 Abbreviated terms
- 4 Limits of radiated disturbance [Go to Page]
- 4.1 General
- 4.2 Group definitions
- 4.3 Determination of conformance of the vehicle, boat and device with the limits
- Tables [Go to Page]
- Table 1 – Detection limits
- 4.4 Peak and quasi-peak detector limits
- Figures [Go to Page]
- Figure 1 – Method of determination of conformance
- Figure 2 – Quasi-peak limits at 10 m antenna distance
- Table 2 – Quasi-peak limits at 10 m antenna distance
- Table 3 – Peak limits at 10 m antenna distance
- 4.5 Average detector limit
- Figure 3 – Peak limits at 10 m antenna distance
- Figure 4 – Average limits at 10 m antenna distance
- 5 Methods of measurement [Go to Page]
- 5.1 Measuring instruments [Go to Page]
- 5.1.1 Measuring receiver
- 5.1.2 Antenna types
- Table 4 – Spectrum analyser parameters
- Table 5 – Scanning receiver parameters
- 5.2 Measurement instrumentation uncertainty
- 5.3 Measuring site requirements [Go to Page]
- 5.3.1 General
- 5.3.2 Outdoor test site (OTS) requirements
- Figure 5 – Measuring site (OTS) for vehicles, boats and devices
- Figure 6 – Measuring site (OTS) for boats [Go to Page]
- 5.3.3 Alternative test site requirements
- 5.4 Test setup for measurement [Go to Page]
- 5.4.1 Antenna requirements
- Figure 7 – Antenna height to measure emissions – Elevation view (vertical polarization shown)
- Figure 8 – Antenna distance to measure emissions – Plan view (horizontal polarization shown)
- Figure 9 – Antenna position for N = 1 (one antenna position to be used) – Horizontal polarization shown
- Figure 10 – Example antenna positions for N = 2 (multiple antenna positions to be used) – Horizontal polarization shown [Go to Page]
- 5.4.2 Test setup for vehicle in charging mode
- Figure 11 – Example of test setup for vehicle with vehicle inlet located on vehicle side (charging mode 1 or 2, AC powered, without communication)
- Figure 12 – Example of test setup for vehicle with vehicle inlet located front or rear of vehicle (charging mode 1 or 2, AC powered, without communication)
- Figure 13 – Example of test setup for vehicle with vehicle inlet located on vehicle side (charging mode 3 or mode 4, AC/DC powered, with communication)
- Figure 14 – Example of test setup for vehicle with vehicle inlet located front or rear of vehicle (charging mode 3 or mode 4, AC/DC powered, with communication)
- Figure 15 – Example of test setup for vehicle in charging mode through wireless power transfer
- 5.5 Test object conditions [Go to Page]
- 5.5.1 General
- 5.5.2 Vehicles and boats
- Table 6 – ICE operating speeds [Go to Page]
- 5.5.3 Devices
- 5.6 Data collection
- 6 Methods of checking for compliance with CISPR requirements [Go to Page]
- 6.1 General
- 6.2 Application of limit curves [Go to Page]
- 6.2.1 Measurements under dry conditions
- 6.2.2 Measurements under wet conditions
- Annex A (normative) Procedure to determine an alternative emission limit for measurements [Go to Page]
- Figure A.1 – Calculation of the resulting gain reduction XdB
- Annex B (informative) Measurement of the insertion loss of ignition noise suppressors [Go to Page]
- B.1 Overview [Go to Page]
- B.1.1 General
- B.1.2 CISPR box method (50/75 Ω laboratory method)
- B.1.3 Field comparison method
- B.2 Comparison of test methods [Go to Page]
- B.2.1 CISPR box method
- B.2.2 Field comparison method
- B.3 CISPR box method (50/75 Ω laboratory method of measurement of insertion loss of ignition noise suppressors) [Go to Page]
- B.3.1 General conditions and limitations of measurement
- B.3.2 Test procedure
- B.3.3 Test box construction
- B.3.4 Results
- Figure B.1 – Test circuit
- Figure B.2 – General arrangement of the test box
- Figure B.3 – Details of the test box lid
- Figure B.4 – Details of the test box
- Figure B.5 – Straight spark-plug ignition noise suppressor (screened or unscreened)
- Figure B.6 – Right-angle spark-plug ignition noise suppressor (screened or unscreened)
- Figure B.7 – Noise suppression spark-plug
- Figure B.8 – Resistive distributor brush
- Figure B.9 – Noise suppressor in distributor cap
- Figure B.10 – Noise suppression distributor rotor
- Figure B.11 – Noise suppression ignition cable (resistive or reactive)
- Annex C (informative) Methods of measurement to determine the attenuation characteristics of ignition noise suppressors for high voltage ignition systems [Go to Page]
- C.1 General
- C.2 Recommended requirements for ignition noise suppressors
- C.3 Test set-up
- Table C.1 – Limits
- C.4 Test procedure
- Figure C.1 – Test set-up, side view
- Figure C.2 – Test set-up, top view
- Figure C.3 – Pressure chamber with ventilation
- C.5 Measuring spark-plugs without suppression elements
- C.6 Test setup examples [Go to Page]
- C.6.1 General
- C.6.2 Connection of a right-angle spark-plug ignition noise suppressor
- Figure C.4 – Top view of the set-up of a right-angle ignition noise suppressor for distributors [Go to Page]
- C.6.3 Connection of a distributor rotor
- Figure C.5 – Location of high voltage ignition components [Go to Page]
- C.6.4 Connection of distributor caps with integrated ignition noise suppressors
- C.6.5 Connection of resistive ignition cables
- Figure C.6 – Top view of the test set-up for distributor rotors
- Figure C.7 – Side view of the test set-up for ready-to-use resistive ignition cables
- Annex D (informative) Applicability of CISPR 12 [Go to Page]
- D.1 Flow chart
- Figure D.1 – Flowchart for the applicability of CISPR 12
- D.2 Example products that are in the scope of CISPR 12 [Go to Page]
- D.2.1 General
- D.2.2 Vehicles
- D.2.3 Boats and boat ICE(s) and EM(s)
- D.2.4 Devices
- D.3 Grouping
- Table D.1 – Examples of products in the scope of CISPR 12 with their assignment to the groups
- Annex E (normative) Direct current charging artificial networks (DC-charging-AN), artificial mains networks (AMN) and asymmetric artificial networks (AAN) [Go to Page]
- E.1 General
- E.2 Direct current charging artificial networks (DC-charging-AN)
- Figure E.1 – Example of 5 (H / 50 Ω DC-charging-AN schematic
- Figure E.2 – Characteristics of the DC-charging-AN impedance
- Table E.1 – Magnitude of the DC-charging-AN impedance ZPB
- E.3 Artificial mains networks (AMN)
- E.4 Asymmetric artificial network (AAN) [Go to Page]
- E.4.1 General
- E.4.2 Signal and control port with symmetric lines
- E.4.3 Signal and control port with PLC (technology) on control pilot line
- Figure E.3 – Example of an AAN for signal and control port with symmetric lines (e.g. CAN) [Go to Page]
- E.4.4 Signal and control port with control pilot line
- Figure E.4 – Example of AAN circuit for signal and control port with PLC (technology) on control pilot
- Figure E.5 – Example of AAN circuit for pilot line
- Annex F (informative) Measurement instrumentation uncertainty [Go to Page]
- F.1 General
- F.2 Uncertainty sources
- Figure F.1 – Typical sources of measurement instrumentation uncertainty
- F.3 Measurand
- F.4 Input quantities to be considered
- Table F.1 – Input quantities to be considered for radiated disturbance measurements
- Annex G (informative) Uncertainty budgets for radiated disturbance measurements of electric field strength [Go to Page]
- G.1 General
- G.2 Typical CISPR 12 uncertainty budgets
- Table G.1 – Typical uncertainty budget – 3 m/10 m distance – Biconical antenna
- Table G.2 – Typical uncertainty budget – 3 m/10 m distance – Log-periodic antenna
- G.3 Receiver’s frequency step
- Figure G.1 – Example of measurement for frequency step uncertainty evaluation for 120 kHz bandwidth
- Annex H (informative) Justification for the limits for an electric vehicle [Go to Page]
- H.1 General
- H.2 Background
- H.3 Consideration on the effect of radio receivers
- H.4 Calculation of limits [Go to Page]
- H.4.1 General
- H.4.2 Electric vehicles in a driven mode
- H.4.3 Electric vehicles in a charging mode
- Figure H.1 – Histogram – Peak to quasi-peak delta, EV driving mode
- Figure H.2 – Histogram – Peak to quasi-peak delta, vehicle in AC or DC charging mode
- H.5 Conclusion
- Figure H.3 – Degradation to 12 dB SINAD (LO-VHF) from Mode 3 charging vs. CW noise
- Annex I (informative) Items under consideration [Go to Page]
- I.1 General
- I.2 Frequency range [Go to Page]
- I.2.1 General considerations
- I.2.2 Testing between 1 GHz to 6 GHz
- I.3 Correlation between OTS, ALSE and OATS measurements
- I.4 Calibration of antennas
- I.5 Charging mode for boats
- I.6 Necessity for the use of artificial networks in the test setups
- I.7 Electric vehicle limits [Go to Page]
- I.7.1 Charging
- I.7.2 Driven mode
- I.8 Dynamic test modes
- Bibliography [Go to Page]
