97
Table 9.1 Resistance Checks (Continued)
60100HP Drives
Input
Diode
No.
Meter
Connection
(+)
(-)
Component is OK if
resistance (R) is:
Component is defective if:
1
47
1L1
0.3 kohm <R< 8 kohm
Continuity (short circuit) or open when the meter is
d i h
d
l i
2
47
1L2
y (
)
p
connected with reversed polarity
3
47
1L3
4
1L1
45
5
1L2
45
6
1L3
45
100150HP Drives
Input
Diode
No.
Meter
Connection
(+)
(-)
Component is OK if
resistance (R) is:
Component is defective if:
1
47
1L1
R> 100 kohm
Continuity (short circuit)
2
47
1L2
y (
)
3
47
1L3
4
1L1
45
5
1L2
45
6
1L3
45
160HP Drives
IGBT
No.
Meter
Connection
(+)
(-)
Component is OK if
resistance (R) is:
Component is defective if:
1
*
W/T3
50 <R< 10 Megohm
Continuity (short circuit) or open when the meter is
d i h
d
l i
2
*
V/T2
g
y (
)
p
connected with reversed polarity
3
*
U/T1
4
W/T3 **
5
V/T2
**
6
U/T1
**
* (+) DC Bus Volts power terminal
** (-) DC Bus Volts power terminal
60150HP Drives
IGBT
No.
Meter
Connection
(+)
(-)
Component is OK if
resistance (R) is:
Component is defective if:
1
47
W
0.3 kohm <R< 8 kohm
Continuity (short circuit) or open when the meter is
d i h
d
l i
2
47
V
y (
)
p
connected with reversed polarity
3
47
U
4
W
45
5
V
45
6
U
45
StockCheck.com
Downloaded from StockCheck.com