Daihen OTC XD350, Руководство по обслуживанию

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CPXD-350,500 SERVICE MANUAL
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3. Troubleshooting (continued)
3.2 Check of main circuit parts
When check of main circuit parts, be caution “1.1 To avoid electric shock and accident” in particular.
And resistance value in the list is changed by internal resistance of tester (digital tester in particular)
that is used. So regard as it is standard.
3.2.1 Thyristor module
Tester red
(+)
Tester black
(+)
Measured
value(Ω)
K1 K2 ∞
G1 G2 ∞
A K1 ∞
K1 A ∞
A G1 ∞
G1 A ∞
G1 K1 20
K1 G1 20
A-G2, A-K2, A-G3, A-K3 are same as this list.
A is heat sink attachment side.