1 Scope
This standard specifies the requirements, test methods, inspection rules, signs, package, storage and safekeeping of the low-voltage electric harness for motor vehicles (hereinafter referred to as electric harness).
This standard is applicable to various electric harnesses for motor vehicles (including single-wire) with the nominal voltage less than 50v.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrigendum content) to, or revisions of, any of these publications do not apply in this standard. However, parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For any undated references, the latest edition of the normative document referred to applies.
GB/T 2828.1-2003 Sampling Procedures For Inspection By Attributes-Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB 11121 Gasoline Engine Oils
GB 17930 Unleaded Petrol (Gasoline) for Motor Vehicles
GB/T 13527.2 Plasticized Polyvinyl Chloride Tubing (for Electrical Insulation)
HG/T 2196 Rubber Materials for Motor Vehicles
JB/T 6313.1 Braided Copper Wires for Electrical Purposes General Regulations
JB/T 6313.2 Braided Copper Wires for Electrical Purposes Diagonal Braided Wires
JB/T 6313.3 Braided Copper Wires for Electrical Purposes Plain Braided Wires
JB/T 8139 Low-voltage Cable ( Wire ) for Road Vehicles
JJG 4 Steel Tape
QB/T 2423 Electric-Insulation Pressure Sensitive Adhesive Tape with Polyvinyl Chloride (PVC)
QC/T 238 Storage and Safekeeping of the Automobile Parts
QC/T 413—2002 Basic Technical Requirements for Automotive Electric Equipment
QC/T 414 The Color of the Low-voltage Wire for Automobile
QC/T 417.1 Electric harness Connector for Vehicles Part 1: Definition, Test Methods and General Performance Requirements (The Automobile Part)
QC/T 417.3 Electric harness Connector for Vehicles Part 3: The dimension and Special Requirements of the Single Blade Connector
QC/T 417.4 Electric harness Connector for Vehicles Part 4: The dimension and Special Requirements of the Multiple Blade Connector
QC/T 417.5 Electric harness for Vehicles Part 5: The Dimension and Special Requirements of the Column Connector for the Single and multiple Connector
QCn 29010 Low-voltage Wire Terminal for Automobile Form, Dimension and Technical Requirements
QCn 29013 Storage Battery Wire Terminal for Automobile Form, Dimension and Technical Requirements
3 Terms and Definitions
This standard adopts the following definitions and those in QC/T 417.1.
3.1 Main stem
The part that two or more than two wires in the electric harness are wrapped up together (as shown in Figure 1).
3.2 Lateral
The part that the end of the wire in the electric harness is unwrapped up or the single wire (as shown in Figure 1).
3.3 Embranchment point
The intersection between main stems or the intersection between the main stem and the centerline of the lateral in the electric harness(as shown in Figure 1).
3.4 Juncture
The connection point between wires (as shown in Figure 1).
3.5 Terminal
The general term of the connector and the joint.
3.6 Desiccation bound
The area in which the electric harness (being installed in the cab, the crew compartment and the luggage compartment etc.) needs no waterproof protection.
3.7 Damp bound
In addition to the desiccation bound, the area in which the electric harness needs no special waterproof protection.
3.8 SKT
The connection mode that the terminal connects with the wire conductor by piercing the wire insulation layer to achieve good electrical contacts and certain tensile strength..
The sheath hole position size Wire size Main stem Embranchment point Lateral Juncture
Figure 1
4 Requirements
4.1 The electric harness shall meet the requirements in this standard and shall be manufactured according to the drawings and technical documents approved through the prescribed procedure.
4.2 The dimension of the electric harness shall meet the following requirements:
4.2.1 The length of the main stem and the protective sleeve pipe shall be more than or equal to 100mm and be the multiple of 10. e.g. 100mm, 110mm and 120mm.
4.2.2 The length of the lateral shall be more than or equal to 30mm.
4.2.3 The distance between junctures, between the juncture and the embranchment point shall be more than or equal to 20mm.
4.2.4 While it is required to install the insulation sleeve pipe in the connection between the wire and the terminal, the length of the insulation sleeve pipe shall be more than or equal to 20mm.
4.2.5 The basic dimension limit dev
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
5 Test Methods
6 Test rules
7 Mark, package, storage and safekeeping
Appendix A (Normative) Requirements of The Crimping Position of The Terminal And The Wire Conductor And The Cross-Section of The Crimping Juncture
