Scope note: In this section, the abbreviation ACSC complete equipment for construction sites (see 3.1.101) refers to low-voltage switchgear and control equipment intended for use on buildings and similar sites. This part of GB/T 7251 defines the special requirements for ACS: a complete set of equipment with a rated voltage of AC not exceeding 1000 V or DC not exceeding 1500 V: the nominal primary voltage and nominal secondary voltage of the transformer in ACS are within the limits specified above; 1. Planned for use on construction sites, both indoor and outdoor, such as temporary workplaces and construction, installation, repair, demolition or alteration of real estate (buildings), civil engineering (public buildings), excavation, or any similar workplace that are generally not accessible to the public: - Transportable (semi fixed) or mobile packaged equipment with enclosures. Manufacturing and/or assembly may be carried out by manufacturers other than the initial manufacturer. This section does not apply to individual devices and packaged components that meet their respective product standards, such as motor starters, fuse switches, electronic devices, etc. This section does not apply to the complete equipment used in administrative centers (offices, changing rooms, complete equipment rooms, canteens, restaurants, dormitories, bathrooms, etc.) on construction sites. The electrical protection requirements provided by the equipment manufactured according to this section are given in GB/T16895.7. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. Except for the following, Chapter 2 of GB/T 7251.1-2013 applies. Add: GB/T 2423.19-2013 Environmental Testing Part 2: Test Methods Test Kc: Sulfur Dioxide Test for Contact Points and Connections (IEC 60068-2-42:2003, IDT) GB/T 7251.1-2013 Low Voltage Switchgear and Control Equipment Part 1: General (IEC 61439-1; 2011. IDT) GB/T 16895.7-2009 Low Voltage Electrical Installations Part 7-704: Requirements for Special Installations or Places Electrical Installations in Construction and Demolition Sites (IEC 60364-7704: 2005.1DT) GB/T 17045-2008 General Part of Electric Shock Protection Devices and Equipment (IEC 61140:2001, IDT) IEC 60068-2-27:2008 Environmental Testing Part 2-27: Tests Ea and Guidance: Shock IEC 61558-2-23 Power Transformers - Safety of Power Supply Units and Similar Products - Part 2-23: Special Requirements for Transformers Used in Construction Sites (Safety of transformers. reactors, power supply units and combinations there - Part 2-23: Partial requirements and tests for transformers and power supply units for construction sites)
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
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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