Photo explanation
Above photo is a system to totally inspect Trans which is of small size, and of which all input, output lines are of pin type. This system shows an example the form that Test jig has two lines of A,B to shorten the loading and unloading time. Regarding Test items, all items of explanation are automatically processed. General Inspection on the electrical efficiency of Trans is perfectly performed by these tests.
To thoroughly test all kinds of Trans, the following items have to be tested (refer to Figure).

Unload Current test	Test how much input current flows on the condition of impressed regular working voltage to the primary part (P part)
Puncture test	as below Figure, in case that a second part(S part) output is four, the places of Puncture Test are between P and core, P and S∼S₄, Core and S∼S₄, S∼S₄, That is, Puncture test is performed between 4 coils mutually. Therefore the no. of total step which needs Puncture test is 4 times.
Surge test	P part one time, one time on the condition of the connection of every S∼S₄. Total 2 times
Insulation test	one time between the connection from P to S∼S₄ and Core, one time between the connection from S∼S₄ to P. Total 2 times
A second voltage test	output voltage test from every S∼S₄, each one time

Equipment working voltage	AC110 V, 220 V, 50 ~ 60 ㎐
Supplied voltage to Test Trans	AC 110 V∼AC 440 V, or Sin wave of 20 ∼ 60 ㎑ (SMPS Trans)
Test item	- Unload current test(Io) - Surge test - Puncture test - Insulation test - A second part output voltage test
Test step	4∼12 step
Test time	7∼12 sec
Dimensions	Cabinet type or the same system type as Jig table of Photo.