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Routine characteristics test system for transformer

Application & Feature:

This system can run Ex-work routine inspection tests and type tests for power transformer (dry type,oil type and special type) as follows:

  • No-load test:

  • Load test:

  • Induction withstand voltage test:

  • No-load current harmonic analysis:

  • The measurement of Test power frequency, environmental temperature and generator excitation voltage, excitation current.

  • auxiliary function:The data input of industrial frequency voltage, insulation resistance, lightning shock, oil test, partial discharge test, etc, to complete the file data and test report .

  • Establish tested object archive

  • Archive management: including browse, search, modification and printing, etc.

  • Printing test reports and test record.

  • Testing site video monitoring.

  • six channesl of analog oscilloscope display for voltage and current.

  • The main circuit computer simulation screen: it is a intuitive display for where electricity to be sent.

  • Dc resistance measurements

  • transformer ratio measurement.

  • Temperature-rise test

  • Over-current, over-voltage protection; Sound and light alarm; Abrupt stop button protection.


Product Description

System composition:

ØAutomatic, manual and on-site monitoring three-in-one work console:Including industrial computer, laser printers, LCD, LCD digital instrumentation, control button, over-current protection, over-voltage protection, data lock, the scene video monitoring, etc.

ØLow voltage control cabinet: including relays, contactor, low voltage transformer (low voltage PT), low voltage current transformer(low voltage CT), etc.

ØAuxiliary instrument: 10A resistance meter, transformer ratio tester, 8 lines of temperature inspection instrument



System main detail function 

  • This system can run Ex-work routine inspection tests and type tests for power transformer (dry type,oil type and special type) as follows:

  • No-load test: no-load loss measurements and the percentage of idle current measurement and conversion

  • Load test: load loss measurement and impedance voltage measurement and conversion to reference temperature.

  • Induction withstand voltage test: it can draws process voltage, current curve (discharge phenomena, flashover breakdown phenomenon be clear at a glance

  • No-load current harmonic analysis: can be analyzed to 19 times harmonics, and calculates the distortion degree.

  • The measurement of Test power frequency, environmental temperature and generator excitation voltage, excitation current.

  • auxiliary function:The data input of industrial frequency voltage, insulation resistance, lightning shock, oil test, partial discharge test, etc, to complete the file data and test report .

  • Establish tested object archive

  • Archive management: including browse, search, modification and printing, etc.

  • Printing test reports and test record.

  • Testing site video monitoring.

  • six channesl of analog oscilloscope display for voltage and current.

  • The main circuit computer simulation screen: it is a intuitive display for where electricity to be sent.

  • Dc resistance measurements

  • transformer ratio measurement.

  • Temperature-rise test

  • Over-current, over-voltage protection; Sound and light alarm; Abrupt stop button protection.


System protection

  • System Protection contains personal protection and equipment protection:

  • For personal protection:

  • Scram button:In order to cut the power in emergency of test process ,  the scram buttons are equipped on  operator console and control device for urgent need.

  • Lights, sirens, and monitoring system:The alarm system setup lights, alarm bell and monitor system to remind operator.


For Equipment protection

  • In order to protect the equipment safety operation, the system has 4 level protection: input level protection, output level protection, measuring level protection, tested object level protection to make sure display an alarm and make rapid action under tested object breakdown and other abnormal; Meanwhile locking fault instantaneous current voltage values so that easy for  failure analysis.

  • After proctection action,the system will display corresponding prompting  so as to determine the fault location.

  • About input level protection:an air circuit breaker are set at input end of motor and  regulator to protect the input end ofregulator and motor no current , and at the same time, it also can be used as the standby protection of output level protection.

  • About output level protection: In a pressure regulator and generator set the output terminal overvoltage, over current protection, according to pressure regulator and generator output rated voltage, current setting. In a computer program belongs to set within protection. The main protection regulator and generator over-current, over-voltage, and as the intermediate transformer over current, over voltage protection.

  • An over voltage and over current protection device is set at the output terminal of regulator and motor, its adjusting based on the output voltage and current of regulator and motor.

  •  It belongs a protection of computer program.

  • Its function is to protect the over voltage and over current of regulator and motor, at the same time, it also has a function to protect the over voltage and over current of intermediate transformer.

  •  measuring level protection:

  • Measuring level protection can also be set based on the rating data of PT of measuring voltage or CT of measuring current ,so as to protect the safe operation of PT and CT, and also can be used as backup protection of lower stage .

  •  Tested object level protection

  • By trying in the input voltage transformer, over-current protection setting, according to the subjects were used in the transformer test voltage, current, setting. In a computer program belongs to set within protection. Especially in small transformer fault but could not reach superior protection when subjects were fixed value of transformer protection effective means.

  • To set an over voltage and over current protection device at input terminal of tested transformer,its adjusting based on the testing used voltage and current of tested transformer.

  • It belongs a protection of computer program.

  • It's a kind of effective protection especially once the fault arising in a less capacity / voltage grade transformer and the setting protective limits is not reached.

  •  Regulator zero protection

  • In order to ensure the regulator voltage at a low voltage when power supply to the system, it has regulator automatic back to zero and regulator zero start function.  

 


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