Specifications

Method of Checking the Inverter’s Power Transistors and Diode Modules Si30-813
314 Appendix
[In case of TL (3ph, 220V, 60Hz) power supply]
Please conduct followings before checking.
(1) Make the outside unit power off.
(2) Disconnect the electric wiring connected to the power transistor and diode module.
P3
P3
P3
U
V
W
N3
N3
N3
U
V
W
U
V
W
P3
P3
P3
U
V
W
N3
N3
N3
10~20(∗1)
10~20(∗1)
10~20(∗1)
100~300k→∞ (∗2)
100~300k→∞ (∗2)
100~300k→∞ (∗2)
100~300k→∞ (∗2)
100~300k→∞ (∗2)
100~300k→∞ (∗2)
10~20(∗1)
10~20(∗1)
10~20(∗1)
×1K
×1K
×1K
×1M
×1M
×1M
×1M
×1M
×1M
×1K
×1K
×1K
Tester electrode + Tester electrode – Tester range
Resistance
Ω
P1
P1
P1
HSRB
HSSB
HSTB
N3
N3
N3
HSRB
HSSB
HSTB
HSRB
HSSB
HSTB
P1
P1
P1
HSRB
HSSB
HSTB
N3
N3
N3
10~20(∗1)
10~20(∗1)
10~20(∗1)
∞ (∗2)
∞ (∗2)
∞ (∗2)
∞ (∗2)
∞ (∗2)
∞ (∗2)
10~20(∗1)
10~20(∗1)
10~20(∗1)
×1K
×1K
×1K
×1K
×1K
×1K
×1K
×1K
×1K
×1K
×1K
×1K
Tester electrode + Tester electrode –
Tester range
Resistance
Ω
WVU
L1
L2
L3
N3
P3
IGBT
P2
P1
DM
HSRB
HSSB
HSTB
[Checking procedure]
{Power transistor
[Judgment criteria]
Values for each phase in ∗1 and ∗2 in the following table must be the
same.
<The conditions that must be judged as the same value>

The difference in resistance among each phase in ∗1 is 10Ω or less.

The difference in resistance among each phase in ∗2 is 200Ω or less.
{Diode module
[Judgment criteria]
Values for each phase in ∗1 and ∗2 in the following table must be the
same.
<The conditions that must be judged as the same value>

The difference in resistance among each phase in ∗1 is 10Ω or less.

All of the resistances of each phase in ∗2 is ∞ Ω.
Printed Circuit Board
Circuit Diagram
∗ When a digital tester is used, “ ∞ ” and “continuity” may be switched.