Hitachi UTOPIA RAS-4HVRP2E - Page 159

8 Electrical checks of main parts
Inverter
SMGB0136 rev.0 - 07/2021
157
8
3 Remove all the terminals of the inverter module before check. If all the items (below table) are performed and all
items are satised, the inverter module is non-defective.
Test Point
Analog Tester Result Digital Tester Result
(+) Side of Tester (-) Side of Tester
AC-L1/AC-N L-COM More than 1k Ohm 0.5V or smaller
AC-L1/AC-N N More than 100k Ohm Overload
L-COM AC-L1/AC-N More than 100k Ohm Overload
N AC-L1/AC-N More than 1k Ohm 0.5V or smaller
U / V / W P More than 1k Ohm 0.5V or smaller
U / V / W N More than 100k Ohm Overload
P U / V / W More than 100k Ohm Overload
N U / V / W More than 1k Ohm 0.5V or smaller
4 If all the items (below table) are performed and all items are satised, the inverter module is non-defective.
Test Point
Analog Tester Result Digital Tester Result
(+) Side of Tester (-) Side of Tester
L1 / L2 P More than 1k Ohm 0.5V or smaller
P L1 / L2 More than 100k Ohm Overload
L1 / L2 N More than 5M Ohm Overload
N L1 / L2 More than 0.5M Ohm Overload