Basic Technical Requirements and Characteristics of Box-Type Substations
Box-type substations are used for the transmission and transformation of electrical energy at an AC frequency of 50 Hz and a voltage level of 10/0.4 kV.
The packaged substation shall include:
1. All high-voltage switchgear inside the cabinet;
2. All low-voltage switchgear within the enclosure;
3. Power transformers (two SC-50 dry-type fully sealed transformers);
4. Spare parts and components;
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5. Other relevant facilities and components within the enclosure
Standards for Box-Type Substations
(1) GB/T 17467-1988 Prefabricated High-Voltage/Low-Voltage Substations;
(2) ZBK40001 Combined Substation;
(3) Technical Specifications for SD320 Box-Type Substation;
(4) GB 156 Rated Voltage of Electrical Equipment;
(5) GB 311-1997 Insulation Coordination for High-Voltage Transmission and Transformation Equipment;
(6) GB 763: Heating of AC High-Voltage Electrical Apparatus During Long-Term Operation;
(7) Technical Specifications for Ordering 6–35 kV Box-Type Substations, DL/T 537.
(8) GB/T 11022-1999 Common Technical Requirements for Standards of High-Voltage Switchgear and Control Equipment
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