8.0 KG Transformer Testing Equipment Frequency Response Characteristic Of Winding
1. Equipment Description:
Power transformer as an important electrical equipment, its safe and reliable operation is extremely important for power systems. After the impact of short-circuit current, the transformer winding deformation test is very important. Normally, there are two methods: First, the sweep frequency response analysis method; Second, low-voltage short-circuit impedance method.
Frequency response method and short circuit impedance method has been a successful application experience in the transformer winding deformation test, and achieved certain results, the relevant standards have been promulgated. However, both methods have their own advantages and disadvantages. The two methods are different sensitive for different types of deformation. In practical applications, some of the deformation can be found in the frequency response method but can’t be found in the low-voltage short-circuit impedance, the opposite situation also exists. But many of the deformation in the two methods can be found. So at the same time using two methods can effectively reduce incorrect judgments.
The tester,follow the national power industry standards DL / T911-2004 and DLT 1093-2008, and can be used for IEC60076-18-2012 and IEC60076-5-2006.
also,the tester can also be used for generator rotor AC impedance test.
2.Technical characteristics:
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Using the advanced technical of DDS;
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Using the high speed and advanced microprocessor to design;
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Using AD chip of 16 bits;
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With seven inch LCD touch screen of which the brightness can be adjusted;
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With thermal printer of which the print thick can be adjusted;
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It could store one hundred and twenty groups of FRA data, fifty groups of SCI data and thirty groups of SCI data, which could be read to current screen or upload to the PC;
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With PC software using which we could upload data ,test, analyze data, print data, or create word document;
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Using USB2.0 to connect to the device；
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Tester dimension:49X31X25cm；
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Weight: 8.0KG;
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Power:AC220V±10%, (50 or 60)HZ ;
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Environment:-10℃～50℃ humidity <90％;
3.Technique standard
Sweep frequency response:
1, Two different sweep modes: Linear sweep,Section sweep；
Linear sweep:
10HZ-1MHZ interval 0.5KHZ 2000 dots
100HZ-2MHZ interval 0.5KHZ 2000 dots
10HZ-1MHZ interval 0.25KHZ 4000 dots(PC available)
100KHZ-2MHZ interval 0.25KHZ 4000 dots(PC available)
User define Frequency,interval,Scan Dots can be set(PC available)
Section sweep:
10HZ-100HZ interval 1HZ 90 dots
100HZ-1KHZ interval 5HZ 180 dots
1KHZ -10KHZ interval 50HZ 180 dots
10KHZ-100KHZ interval 0.2KHZ 450 dots
100KHZ –300KHZ interval 0.5KHZ 400 dots
300KHZ – 1000KHZ interval 1KHZ 700 dots
2, Test range:(-100dB) - (+20dB)
3, Test accuracy:(-80dB) - (+20dB)0.2dB (-100dB) - (-80dB)1.0dB；
4, Frequency accuracy:< 0.01%；
5, Signal input impedance:> 1M Ω；
6, Signal output impedance:50 Ω；
7, Repeat test:99.5%；
Short-circuit impedance and Generator rotor AC impedance:
1, AC impedance 0～999.999Ω 0.2%±2 digits
2, AC voltage 0～600V 0.2%±2 digits
3, AC ampere 0～120A 0.2%±2 digits
4, Active power cosφ>0.1 0.5%±2 digits
cosφ<0.1 1.0%±2 digits
Reactive power 0.2%±2 digits
5, Frequency 45～65HZ 0.1%
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8.0 KG Transformer Testing Equipment Frequency Response Characteristic Of Winding Images
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