The JH2810 DC resistance tester of transformers is a necessary test item for semi-finished and finished products in transformer manufacturing, including factory testing, installation, overhaul, change of tap changer, handover testing, and preventive testing by the...
2. It is applicable to inductive test objects such as transformer, mutual inductor, reactor, generator, motor, etc., and can also be used to measure test objects such as switches, copper bars, contactors, relay contacts, metal wires, cable accessories,...
Comply-ability of the electrical equipment is indicated by the proper testing of those equipments. This paper considers the testing of distribution transformer before its installation in a substation. Manufacturers test their distribution transformers many times at worldwide locations every week. Their ...
1.HVDC test is one of routine tests on the converter transformer.高压直流试验是换流变压器的例行试验之一。 2.An automatic routine examination system for refrigerators is proposed.介绍了使用计算机自动控制的家用冰柜例行试验系统。 3.Transmitters for use in industrial-process control systems--Part 2: Gui...
The high voltage transformer shall be capable of maintaining the specified voltage until the tripping current flows. Instead of being subje 42、cted to an a.c. voltage, the insulation may be subjected to a d.c. voltage of 1,5 times the value shown in the table. An a.c. voltage ...
aSome of these mentioned methods are implemented using software systems, which gives more definite indications of transformer problems than conventional analysis. The use of software can improve the reliability and provide facilities to analyze the test data. It can also be used to extract information...
NOTE 2 The circuit used for the test incorporates a current sensing de 30、vice that trips when the current exceeds the limit. NOTE 3 The high voltage transformer is to be capable of maintaining the specified voltage at the limiting current. NOTE 4 Instead of being subjected to an a.c. ...
In almost every place where people live and work you will find at least one transformer, behind the scenes keeping the supply of power to the escalator in the department store, the hotel lift, the office computer, the oven in the local bakery, the farm machinery or the petrochemical p...
One kind of 35kV and 110kV converter transformer routine test connection box, the structure comprising: a converter box (1) rectangular parallelepiped, A set top converter box (1) provided (2), group B (3), Group C (4 ), group D (5), the side E (6) five sets of lugs ...
Therefore, in this paper, a Markov model is proposed to investigate the impact of human error on the failure rate and the ORTI of the protection system. The model is applied for the protection system of power transformer. The obtained results indicated that human error has...