ISO 16750-2-2010.pdfRoad vehicles — Environmental

文件名称: ISO 16750-2-2010.pdf

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详细说明：Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 2:Electrical loadslsO16750-2:2010(E) Contents Page Foreword cope Normative references Terms and definitions Tests and requirements General ∴1 4.2 Direct current supply voltage.. 2 4.3 Overvoltage……,… ■■■■重D日国■■1道面 3 4.4 Superimposed alternating voltage 5 Slow decrease and increase of supply voltage 6 4.6 Discontinuities in supply voltage 6 4.7 Reversed voltage 48 Ground reference and supply offset…… 15 4. 9 Open circuit tests 15 4.10 Short circuit protection. 16 4.11 Withstand voltage. 17 4.12 nsulation resistance 18 4.13 Electromagnetic compatibility....... 18 Documentation 18 Bibliography 19 O Iso 2010-All rights reserved so16750-2:2010(E) Foreword ISo (the International Organization for Standardization)is a worldwide federation of national standards bodies (Iso member bodies ). The work of preparing International Standards is normally carried out through ISo technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission(IEC)on all matters of electrotechnical standardization International Standards are drafted in accordance with the rules given in the isonEC Directives Part 2 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 of the member bodies casting a vote Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. Iso shall not be held responsible for identifying any or all such patent rights so 16750-2 was prepared by Technical Committee ISo/TC 22, Road vehicles, Subcommittee SC 3 Electrical and electronic equipment This third edition cancels and replaces the second edition(Iso 16750-2: 2006), which has been technically revised Iso 16750 consists of the following parts, under the general title Road vehicles- Environmental conditions and testing for electrical and electronic equipment Part 1: General - Part 2. Electrical loads Part 3: Mechanical loads Part 4: Climatic oads Part 5: Chemical loads O Iso 2010-All rights reserved INTERNATIONAL STANDARD so16750-2:2010(E Road vehicles-Environmental conditions and testing for electrical and electronic equipment Part 2 Electrical loads 1 Scope This part of iso 16750 applies to electric and electronic systems/components for road vehicles. This part of ISo 16750 describes the potential environmental stresses and specifies tests and requirements recommended for the specific mounting location on/in the road vehicle This part of Iso 16750 describes the electrical loads. Electromagnetic compatibility(EMC)is not covered by this part of Iso 16750. Electrical loads are independent from the mounting location, but can vary due to the electrical resistance in the vehicle wiring harness and connection system 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies so 8820(all parts), Road vehicles- Fuse-links ISo 16750-1, Road vehicles Environmental conditions and testing for electrical and electronic equipment-Part 1: Genera ISo 16750-4. Road vehicles Environmental conditions and testing for electrical and electronic equipment-Part 4. Climatic loads 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISo 16750-1 apply 4 Tests and requirements 4.1 Genera If not otherwise specified, the following tolerances shall apply frequency and time: +5 %; voltages:±0,2V; resistance:±10% Iso 2010-All rights reserved so16750-2:2010(E) If not otherwise specified, measure all voltages at the relevant terminals of the device under test (DUT) 4.2 Direct current supply voltage 4.2.1 Purpose The purpose of this test is to verify equipment functiona lity at minimum and maximum supply voltage 4.2.2 Test method Set the supply voltage as specified in Table 1 or Table 2 to all relevant inputs of the DUT. Operating modes are specified in ISo 16750-1 The voltages listed in Table 1 or Table 2 are relevant within the operating temperature range as specified in ISO 16750-4. without time limits Table 1- Supply voltage for system devices with 12 V nominal voltage Minimum supply voltage Maximum supply voltage Smax A 6 16 B 8 16 C 10,5 16 Table 2- Supply voltage for system devices with 24 V nominal voltage Minimum supply voltage Maximum supply voltage Code V E 10 32 F 16 32 H 18 32 4.2.3 Requirement All dUT functions shall remain class A as defined in Iso 16750-1 when tested in the supply voltage ranges given in Table 1 or Table 2 respectively O Iso 2010-All rights reserved lsO16750-2:2010(E) 4.3 Overvoltage 4.3.1 Systems with 12 V nominal voltage 4.3.1.1 Test at a temperature of Imax-20C 4.3.1.1.1 Purpos This test simulates the condition where the generator regulator fails, so that the output voltage of the generator rises above normal values 4.3.1.1.2 Test method Heat the DUT in a hot air oven to a temperature that is 20C below the maximum operating temperature Tmax. Apply a voltage of 18 V for 60 min to all relevant inputs of the DUT 4.3.1.1.3 Requirement The functional status for the dut shall be minimum class c as defined in so 16750-. functional status shall be class a where more stringent requirements are necessary 4.3.1.2 Test at room temperature 4.3.1.2.1 Purpose This test simulates a jump start 4.3. 1.2.2 Test method Ensure that the dut has stabilized at room temperature. Apply a voltage of 24v for(60+6s to all relevant inputs of the DUT 4.3.1.2.3 Requirement The functional status shall be minimum class d as defined in iso 16750-1. functional status shall be class c where more stringent requirements are necessary. 4.3.2 Systems with 24V nominal voltage 4.3.2.1 Purpose This test simulates the condition where the generator regulator fails, so that the output voltage of the generator rises above normal values 4. 3.2.2 Test at a temperature of Imax -20C Heat the dUT in a hot air oven to a temperature that is 20c below the maximum operating temperature max. Apply a voltage of 36 V for 60 min to all relevant inputs of the dUt 4.3.2.3 Requirement The functional status shall be minimum class c as defined in iso 16750-. functional status shall be class a where more stringent requirements are necessary Iso 2010-All rights reserved so16750-2:2010(E) 4.4 Superimposed alternating voltage 4.4.1 Purpose This test simulates a residual alternating current on the direct current supply 4, 4.2 Test method Connect the DUT as shown in Figure 1. Apply the following test simultaneously to all applicable inputs (connections )of the DUT; the severity level(1, 2, 3 or 4)shall be chosen in accordance with the application maximum supply voltage, USmaxsee Figure 2) 16V for systems with nominal voltage, UN, of 12V 32V for systems with nominal voltage, UN, of 24 V; a.c. voltage(sinusoidal severity 1: peak to peak voltage, Upp, of 1 V, for UN=12 V and UN=24 V severity 2: peak to peak voltage, Upp, of 4 V, for UN-12V and UN=24 V; severity 3: peak to peak voltage, Upp, of 10 V, for UN=24 V only severity 4: peak to peak voltage, Upp, of 2 V, for UN=12 V internal resistance of the power supply: 50 mQ2 to 100 mQ2 frequency range(see Figure 3 ): 50 Hz to 25 kHz type of frequency sweep(see Figure 3): triangular, logarithmic, sweep duration(see Figure 3):120 s number of sweeps: 5(continuously) 4 5 sweep generator 2 power supply unit capable of being modulated DUT 4 positive 5 ground or return Figure 1-Test set-up to superimpose a.c. voltage on component power supply lines O Iso 2010-All rights reserved lsO16750-2:2010(E) Smax time test voltage peak to peak voltage Smax maximum supply voltage Figure 2- Test voltage with superimposed sinusoidal a.C. voltage 25000 50 0 60 120t Key t time in seconds f frequency, logarithmic scale, in hertz one cycle Figure 3- Frequency sweep Iso 2010-All rights reserved so16750-2:2010(E) 4.4.3 Requirement The functional status shall be class a as defined in iso 16750-1 4.5 Slow decrease and increase of supply voltage 4.5.1 Purpose This test simulates a gradual discharge and recharge of the batter 4.5.2 Test method Apply the following test simultaneously to all applicable inputs(connections)of the dUt Decrease the supply voltage from the minimum supply voltage, USmin, to o V, then increase it from o V to iSmin, applying a change rate of (0, 5+0, 1)V/min linear, or in equal steps of not more than 25 mV 4.5.3 Requirement The functional status inside the supply voltage range(see Table 1 or table 2 )shall be as specified in 4.2.3 Outside that range, it shall be minimum class d as defined in iso 16750-1. the functional status of class c may be specified where more stringent requirements are necessary 4.6 Discontinuities in supply voltage 4.6.1 Momentary drop in supply voltage 4.6.1.1 Purpose This test simulates the effect when a conventional fuse element melts in another circuit 4.6.12 Test method Apply the test pulse (see Figures 4 and 5) simultaneously to all relevant inputs(connections)of the dUT. the rise time and fall time shall be not more than 10 ms U 4.5 10 10,1 K time. in seconds test voltage in volts Usmin minimum supply voltage Figure 4- short voltage drop for systems with 12 V nominal voltage O Iso 2010-All rights reserved

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