1, electrical test personnel to do high-voltage test test transformer, in addition to familiar with the instructions, but also must strictly implement the relevant national standards and operating procedures. Refer to GB311-83 "high-voltage power transmission equipment, insulation, high-voltage test technology," "electrical equipment preventive test procedures."
2, in accordance with the needs of field work connected to work lines. The enclosure of the test transformer and of the operating system must be reliably earthed. The high voltage end of the high voltage winding of the test transformer and one end of the measuring winding must be reliably earthed.
3, do cascade test, the second and third test transformer low-voltage winding X-side, measuring winding F-side and high-voltage winding of the X-side (high-pressure tail) are connected to the level of the test transformer shell. The shells of the second and third test transformers must be grounded through the insulated support.
4, connected to the power supply, the power console voltage regulator must be transferred to zero before the power, closing, start boost.
5, starting from zero uniform rotation of the regulator handwheel boost. Boost method: rapid step-up method, that is, 20s step-by-step method; slow step-up method, that is 60s step-by-step method; very slow step-up method for selection. The voltage rises from zero to 75% of the rated test voltage you require in a certain step-up mode and speed, and then rises to the rated voltage you require at a rated test voltage of 2% per second and closely follows the measurement The instruction of the instrument and the situation of the tested product. Step-up process or during the test if the instructions of the measuring instrument and the abnormal situation of the tested product should be immediately step-down, cut off the power to identify the situation.
6, after the test, should be within a few seconds, the regulator will return to zero uniform speed, and then cut off the power.
7, the test transformer shall not exceed the rated parameters. In addition to the test must be, must not allow full voltage power or power.
2, in accordance with the needs of field work connected to work lines. The enclosure of the test transformer and of the operating system must be reliably earthed. The high voltage end of the high voltage winding of the test transformer and one end of the measuring winding must be reliably earthed.
3, do cascade test, the second and third test transformer low-voltage winding X-side, measuring winding F-side and high-voltage winding of the X-side (high-pressure tail) are connected to the level of the test transformer shell. The shells of the second and third test transformers must be grounded through the insulated support.
4, connected to the power supply, the power console voltage regulator must be transferred to zero before the power, closing, start boost.
5, starting from zero uniform rotation of the regulator handwheel boost. Boost method: rapid step-up method, that is, 20s step-by-step method; slow step-up method, that is 60s step-by-step method; very slow step-up method for selection. The voltage rises from zero to 75% of the rated test voltage you require in a certain step-up mode and speed, and then rises to the rated voltage you require at a rated test voltage of 2% per second and closely follows the measurement The instruction of the instrument and the situation of the tested product. Step-up process or during the test if the instructions of the measuring instrument and the abnormal situation of the tested product should be immediately step-down, cut off the power to identify the situation.
6, after the test, should be within a few seconds, the regulator will return to zero uniform speed, and then cut off the power.
7, the test transformer shall not exceed the rated parameters. In addition to the test must be, must not allow full voltage power or power.