GB 50150-2016 English PDFGB 50150: Historical versions
Basic dataStandard ID: GB 50150-2016 (GB50150-2016)Description (Translated English): Electric equipment installation engineering-standard for hand-over test of electric equipment Sector / Industry: National Standard Classification of Chinese Standard: P60 Classification of International Standard: 27.100 Word Count Estimation: 179,168 Date of Issue: 2016-04-15 Date of Implementation: 2016-12-01 Older Standard (superseded by this standard): GB 50150-2006 Quoted Standard: GB 261; GB/T 264; GB 311.1; GB/T 507; GB/T 511; GB 1094.3; GB/T 1094.10; GB/T 8564; GB 1094.11; GB/T 5654; GB/T 6541; GB/T 7252; GB/T 7595; GB/T 7598; GB/T 7600; GB/T 7601; GB 7674; GB/T 8905; GB/T 11024.1; GB 11032; GB 12022; GB/T 14542; GB/T 16927.1 Regulation (derived from): Ministry of Housing and Urban - Rural Development Notice No. 1093 of 2016 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Summary: This standard applies to 750kV and below the AC voltage level of the new installation, in accordance with the relevant national factory test standard test qualified electrical equipment transfer test. GB 50150-2016: Electric equipment installation engineering-standard for hand-over test of electric equipment---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Electric equipment installation engineering standard for hand-over test of electric equipment Issued on: April 15, 2016 Implemented on: December 1, 2016 Issued by: Ministry of Housing and Urban-Rural Development; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. 1 General Provisions 1.0.1 This standard is formulated with a view to meet the requirements of hand-over test of electric equipment in electric equipment installation projects and promote the extension and application of new technologies for hand-over test of electric equipment. 1.0.2 This standard is applicable to the hand-over test of newly-installed electric equipment with AC voltages of 750kV and below that con forms to the relevant national standards for factory acceptance test. 1.0.3 The hand-over tests for relay protection, automation, telecontrol communication, measuring and rectifying devices, DC field equipment and the mechanical part of electric equipment, shall be conducted respectively according to provisions of the current relevant national codes. 1.0.4 In addition to following the provisions of this standard, the hand-over test of electric equipment in electric equipment installation engineering shall comply with the relevant prov is ions of the current national standards. 2 Terms2.0.1 Automatic de-excitation equipment It is an automatic device that is used for de-excitation of generator and exciter. 2.0.2 Inductive voltage transformer It is a kind of voltage transformer that transforms primary voltage into secondary voltage in proportion by electromagnetic induction. The other electrical components that transform primary voltage are not attached to this kind of transformer. 2.0.3 Capacitor voltage transformer It is a kind of voltage transformer that consists of capacitive voltage divider and electromagnetic unit. Its design and internal wiring enable the secondary voltage in electromagnetic unit to be in direct proportion to the primary voltage that is applied to capacitive voltage divider. When it is connected in a correct manner, its phase difference is close to zero. 2.0.4 Inverted current transformer It is a kind of current transformer that its secondary winding and iron core are located at the top o f the whole structure. 2.0.5 Self-contained oil -filled cable It is a kind of power cable that eliminates air gap 111 insulating layer 111 the principle of supplementary impregnation so as to improve operation field strength. 2.0.6 Coupling capacitor It is a kind of capacitor that transmits in formation in electric systems. 2.0.7 Electrostatic precipitator It means a precipitator that separates dust from dusty gas through utilizing the adsorption effect imposed on charged dust by high voltage electric field. 2.0.8 Secondary circuit It comprises circuits such as operating circuit, protection circuit, measuring circuit and signal circuit of electric equipment, actuator coil, contactor relay, instrument and secondary winding of instrument transformer, etc. 2.0.9 Feeder line It is a transmission line through which power is supplied from power source end to loading equipment. 2.0.10 Large-scale grounding connection It refers to the grounding connections in substations with voltages of 110( 66) kV and above, fossil fired or hydraulic power plants with capacities of 200 MW and above ; or grounding connections with equivalent plane of 5000 m2 and above.3 Basic Requirements3.0.1 AC voltage withstanding test of electrical equipment shall be conducted according to this Standard and shall meet the following requirements: 1 During the AC voltage withstanding test, when the voltage is increased to standard voltage of the test, the lasting time shall be 1 minute if there is no special instructions2 When the voltage value of withstanding test is calculated based on the multiples of ratedvoltage, the voltage for generator and electric motor shall be according to rated voltage in nameplate. The voltage for cable may be calculated by methods stipulated in Chapter 17 of this standard. 3 As prescribed in this standard, the voltage value of AC withstand test for non-standard voltage equipment may be calculated by interpolation method in proportion to adjacent voltage levels when there is no special requirement. 3.0.2 When the insulation test is made, the connected equipment or devices should be separated to conduct individual test except for the complete set of equipment assembled by manufacturer. Equipment with the same test standard may be connected for testing. In order to be convenient for test, electric equipment at the same voltage level with different test standards and factory acceptance records may also be connected together when single test is difficult. The test standard shall adopt the minimum standard among all the connected equipment. 3.0.3 The insulation test for oil-immersed type transformer and reactor shall not be conducted until they are filled with qualified oil and air bubbles are eliminated after standing for a certain time. Standing time complies with the manufacturer's requirement. When there is no requirement by manufacturer, the relationship between voltage class of the oil-immersed type transform er and reactor and standing time shall be determined according to those set out in Table 3.0.3. 3.0.4 If only individual items cannot satisfy provisions of this standard during the measurement and test on electric insulation, it shall make synthetic judgment on comprehensive test records, and the eligible ones may be put into operation. 4.0.2 The hand-over test items for synchronous generators and phase modifiers of various kinds shall meet the following requirements: 1 Hand-over test for synchronous generator with voltage of above l kV and capacity of below 6000kW shall be conducted in accordance with item 1, 2, 3, 4, 5, 6, 7,8, 9, 11, 12, 13, 14, 15, 16, 17, 18 and 19 of Article 4.0.1 of this standard. 2 Hand-over test for synchronous generator with any capacity and voltage of no more than 1 kV should be conducted in accordance with item 1, 2, 4, 5, 6, 7, 8, 9, 11, 12, 13, 18 and 19 of Article 4.0.1 of this standard.3 As to synchronous phase modifier without starting motor or its starting motor can only run in ashort span of time, it may not conduct the tests stipulated in item 14 and 15 of Article 4.0.1 of this standard. 4.0.3 Measurement on insulation resistance, absorption ratio or polarization index of stator winding shall meet the following requirements: 1 The unbalanced coefficient of insulation resistance of each phase shall not be greater than 2. 2 The absorption ratio for insulation of epoxy mica shall not be less than 1.6. As to un it with capacities of 200MW or above, the polarization index shall be measured and it shall not be less than 2.0. 3 The insulation of machine winding shall meet the requirements in item 1 and 2 of Article 4.0.3 before the AC voltage withstand test. 4 Measurement on insulation resistance of internal water -coo ling generator winding shall be carried out under the circumstance that the effect of residual water is eliminated. 5 As to machine that its water catchment pipe is permanently grounded, the measurement shall be carried out under the circumstance of no water; if it is not permanently grounded, the insulation resistance shall be measured for winding and water catchment pipe, respectively. In order to eliminate the effect of water, the shielding method shall be app lied to the measurement of the insulation resistance of winding. The measured results shall conform to the provisions stipulated by manufacturer. 6 As to the qualified machine in AC voltage withstand test, when its insulation resistance value is converted into that at the operating temperature (machine with epoxy-mica insulation at normal temperature) in accordance with the provisions of Appendix B to this standard and the converted value is not lower than the rated voltage multiplied by lMQ/ kV, it may be put into operation without drying. However, its end covers shall not be opened up for internal working before the operation. 4.0.4 Measurement on DC resistance of stator winding shall meet the following requirements: 1 DC resistance shall be measured in the cold state. During the measurement, the temperature difference between the winding surface and the surrounding air shall be within the range of ± 3°C. 2 As to DC resistance of each phase or each branch winding, the differences among them shall, after the deviations due to different lengths of lead wires are corrected, be no larger than 2 % of its minimum value. Compared with the DC resistance value measured at the time of delivery from the factory at the same temperature, the relative change shall not be larger than 2 %. 3 As to the half-and-half joints assembled at site, the connection of contact surface shall be checked after tightening the bolt torque. Moreover, the measurement on DC resistance of stator winding sha ll be carried out after the assembly of half-and-half joints at site. 4.0.5 DC voltage withstand test and leakage current measurement of stator winding shall meet the following requirements: 1 Test voltage shall be three times of the rated voltage of electric machine. 2 Test voltage shall be increased by stages and at the rate of 50% of rated voltage each stage. At each stage, the duration of an applied voltage shall be 1 minute and the value of leakage current shall be recorded. Under the stipulated test voltages, the leakage currents shall meet the following provisions: The value differences of leakage current among all phases shall not be larger than 100 % of the minimum value. ...... |