This standard specifies the classification, technical requirements, test items, test methods, inspection rules, and markings of insulated hard ladders for live working. This standard is applicable to insulated hard ladders of different structural types for live working between 10 and 500 kV. 2. The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 311.1-1997 Insulation Coordination for High Voltage Transmission and Transformation Equipment GB/T 5130-1997 Test Methods for Industrial Hard Laminates Made of Thermosetting Resins for Electrical Purposes GB/T 5132-1985 Test Methods for Electrical Insulation Laminated Pipe DL 409-1991 Electrical Safety Work Regulations JB/T 8150.2-1995 Epoxy Laminated Glass Fabric Pipe Q] 502-1980 Aluminum Alloy Technical conditions for copper alloy forgings YB 3205--1980 General technical conditions for mechanical assembly YB 3206--1980 General technical conditions for machining YB 3207--1980 General technical conditions for forgings YB 3212--1980 General technical conditions for heat treatment) No identification results IEC 855: 1985 Live working foam filled insulating pipes and rods (first edition) 3 Definitions The following definitions are used in this standard. 3.1 Insulating rigid ladder is a general term for hard insulated ladders with corresponding mechanical strength and electrical properties used by operators for climbing in live work. 3.2 Insulated elevator: An insulated elevator that stands upright on the ground and slides vertically to reach a charged body. 3.3 Insulating ladder is assembled on an insulated ladder that can extend horizontally from the tower to the charged body. 3.4 Insulating hook ladder An insulated ladder suspended on a wire, ground wire, or component. 3.5 Insulating centipede ladder Insulating centipede type ladder is an insulated ladder suspended on the cross arm of the tower, consisting of an insulated pipe with an appropriate number of foot nails at the lower end as the main body and an insulated suspension rod at the upper end. 3.6 Insulating A-ladder with platform: An insulated ladder standing on the ground in the shape of a "person"
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China