Hitachi L100 Series, Руководство по обслуживанию

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[3] Rectifier Measurement
This is to measure 3 rectifiers located lower arm of the input side.
Resistance Measurement Allowable Value
From To
R(Ll) S(L2) 50kohm or more
S(L2) R(Ll)
S(L2) T(L3)
T(L3) S(L2)
T(L3) R(Ll)
R(Ll) T(L3)
R(Ll)
R(Ll)
S(L2)
S(L2)
T(L3)
T(L3)
Each R(Ll), S(L2) and
T(L3)
- 50kohm or more
- Each R(Ll), S(L2) and
T(L3)
50 ohm or less
Each R(Ll), S(L2) and
T(L3)
P1 50 ohm or less
P1 Each R(Ll), S(L2) and
T(L3)
50kohm or more
To make sure MOV, visual check of MOV is necessary on the ISPM.
If the result is out of its spec, replace the unit. ( relative check is important )
R(L1)
T(L3)
S(L2)
P1
6-2
+
+1
U
R
(Ll)
W
V
T
(L3)
S
(L2)
Main circuit of L100
+
RS
P1
PD
THY
RSH