ISO 16750-1-2018 pdf free.Road vehicles – Environmental conditions and testing for electrical and electronic equipment — Part 1: General.
The ISO 16750 series applies to electric and electronic systems/components for vehicles. It describes the potential environmental stresses and specifies tests and requirements recommended for the specific mounting location on/in the vehicle.
This document contains definitions and general notes. Electromagnetic compatibility (EMC) is not covered by the ISO 16750 series.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— I EC Electropedia: available at http://www.electropedia.org/
3.1 hot-soak temperature TmaxHS
maximum value of the ambient temperature which may temporarily occur in the engine compartment after the vehicle has stopped and the engine is turned off
3.2 nominal voltage UN
voltage value used to describe the electrical system of a vehicle
3.3 maximum operating temperature Tmax
maximum value of the ambient temperature at which the systems/components can be operated continuously
3.4 minimum operating temperat Lire Tmin
minimum value of the ambient temperature at which the systems/components can be operated
4 Classification by mounting location
4.1 Engine compartment
Device mounted:
— to the body;
— to the frame;
— on the flexible plenum chamber, not rigidly attached;
— in the flexible plenum chamber, not rigidly attached;
— on the engine;
— in the engine;
— on the transmission/retarder;
4.2 Passenger compartment
Device mounted in a position:
— without special requirements;
— exposed to direct solar radiation;
— exposed to radiated heat (other than solar radiation).
4.3 Luggage compartment/load compartment Device mounted inside.
4.4 Mounting on the exterior/in cavities
Device mounted:
— to the body;
— totheframe;
— under the body/wheel housing:
— sprung masses;
— unsprung masses (wheel, wheel bracket, axle);
— in/on a passenger compartment door;
— to the engine compartment cover;
— to the luggage compartment lid/door;
— to the trunk lid/door;
— to passenger doors on buses;
— in cavities:
— open towards exterior;
— open towards interior;
— in special compartments (e.g. battery box).
4.5 Other mounting locations
For some locations with special environmental conditions (e.g. exhaust system). no standard specifications can be given. In these cases, the load shall be stated in the specification of the device.
— Operating mode 1.2: connected to wiring harness simulating vehicle installation.
5.2 Operating mode 2
The DUT is electrically operated with test voltage UB as in a vehicle with shut-off engine and with all electrical connections made.
— Operating mode 2.1: system/component functions are not activated (e.g. sleep mode).
— Operating mode 2.2: systems/components with electric operation and control in typical operating mode.
— Operating mode 2.3: systems/components with electric operation and control in minimum load.
— Operating mode 2.4: systems/components with electric operation and control in maximum load.
5.3 Operating mode 3
The DUT is electrically operated with test voltage 11A with all electrical connections made.
— Operating mode 3.1: system/component functions are not activated.
— Operating mode 3.2: systems/components with electric operation and control in typical operating mode.
— Operating mode 3.3: systems/components with electric operation and control in minimum load.
— Operating mode 3.4: systems/components with electric operation and control in maximum load.
6 Functional status classification
6.1 General
This element describes the functional status of a DUT during and after a test.
The minimum functional status shall be given in each test. An additional test requirement may be agreed between supplier and vehicle manufacturer.
Unwanted operations of the DUT are not allowed in any of the following classes.
6.2 Class A
All functions of the device/system perform as designed during and after the test.
6.3 Class B
All functions of the device/system perform as designed during the test. However, one or more of them may go beyond the specified tolerance. All functions return automatically to within normal limits after the test. Memory functions shall remain class A. ISO 16750-1 pdf free download.ISO 16750-1 pdf free download.