This section specifies the mechanical testing methods for power fittings. This section is applicable to power fittings (hereinafter referred to as fittings) for overhead power lines, substations, and power plant distribution devices with a rated voltage of 10 kV and above. 2 Normative References: The clauses in the following documents are referred to in this part of GB/T 2317 and become the clauses of this part. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions do not apply to this section. However, parties to agreements based on this section are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this section. GB/T 2317.4 Acceptance Rules and Packaging for Electric Power Hardware GB/T 8287.2 High Voltage Post Porcelain Insulators: Part 2: Dimensions and Characteristics (GB/T 8287.2-1999) NEQ IEC 60273) DL/T 763 Technical Conditions for Pre twisted Hardware for Overhead Lines DL/T 1098 Technical Conditions and Test Methods for Spacers DL/T1099 Technical Conditions and Test Methods for Vibration Dampers 3 Terms and Definitions The following terms and definitions apply to this part. 3.1 Mechanical failure load is the maximum load that can be applied to the hardware under the specified test conditions. 3.2 Mechanical damage load refers to the maximum load that the hardware can withstand without permanent deformation under the specified test conditions. 3.3 Normal failure load is the minimum load proposed by the purchaser or specified by the supplier for hardware that does not undergo mechanical failure. 3.4 Slippage refers to the phenomenon where the hardware of the wire is tightened in a certain way, and there is relative displacement between the wire and the hardware after applying a load, so that the test load cannot continue to rise. 3.5 Holding force: The maximum load that a metal tool with tightening requirements for the wire can withstand without slipping
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