Normally, the structure and reference of transformer is fixed after being made, therefor, the frequency response of each winding will be almost the same. However, under some special conditions, such as cut off between circles or phases during test, cut off or winding moved during running, winding moved in transportation, these conditions may change the structure of transformer , then the frequency response may be changed, we could detect the deformation according to the frequency response curve.
Our company has designed the SFRA Transformer Phase Shifting Testing Equipment base on the idea and the advanced technique. It could draw the frequency response curve accurately. Then we compare the curves horizontally or vertically to detect the deformation of the transformer.
SFRA Transformer Phase Shifting Testing Equipment is a powerful and sensitive method to evaluate the core, winding and clamping structures of power transformers, by measuring their electrical transfer functions over a wide frequency range.

Specifications:

1	Linear sweep	10HZ-1MHZ interval 0.5KHZ 2001 dots
		10HZ-1MHZ interval 0.25KHZ 4001 dots(PC available)
		100HZ-2MHZ interval 0.25KHZ 4001 dots (PC available)
		Initial frequency, interval and scan dots can be set (PC available)
	Section sweep	10HZ-20HZ interval 1HZ 11 dots
		20HZ-100HZ interval 2HZ 40 dots
		100HZ -1KHZ interval 3HZ 300 dots
		1KHZ-10KHZ interval 20KHZ 450 dots
		10KHZ –100KHZ interval 0.3KHZ 300 dots
		100KHZ – 1000KHZ interval 1KHZ 900 dots
	Section sweep: (conform to IEC60076-18:2012)	20HZ-100HZ interval 2HZ 40 dots
		100HZ -1KHZ interval 2HZ 450 dots
		1KHZ-10KHZ interval 20HZ 450 dots
		10KHZ –100KHZ interval 0.2KHZ 450 dots
		100KHZ – 1000KHZ interval 2.5KHZ 360 dots
		1000KHZ – 2000KHZ interval 4KHZ 250 dots
2	Test range	(-100dB) - (+20dB)
3	Test accuracy	(-40dB) - (+20dB)0.2dB (-60dB) - (-40dB)0.5dB (-80dB) - (-60dB)1.0dB
4	Frequency accuracy	<0.01%
5	Signal input impedance	>1M Ω
6	Signal output impedance	50 Ω
7	In-phase test repetition rate	99.5%
8	Dimension	31cm15cm5cm
9	Net weight	4kg

Features:

This Phase Shifting Testing Equipment adopts advanced technical of DDS;
This equipment uses high speed and advanced microprocessor;
The Phase Shifting Testing Equipment adopts double channels of AD chip of 16 bits;
With seven inch LCD touch screen;
With build-in thermal printer;
With PC software, with it we can operate, analyze data, upload data and generate word document;
Phase Shifting Testing Equipment can store 40 groups of data;
You can use USB2.0 to connect with the device;

SFRA Phase Shifting Testing Equipment:

Product Tags:

transformer testing procedure

instrumentation transformer

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