Datasheet

Characteristics TPI
4/9
Figure 5. Reference test circuit 1
Figure 6. Functional holding current (I
H
) test circuit 2
Auto
Transformer
220 V / 2 A
tp = 20 ms
R2
R1
140 Ω
240 Ω
Static
relay
I
BO
,I
H
measure
V
BO
measure
V
OUT
D.U.T.
K
220 V
Transformer
220 V / 800 V
2 A
TEST PROCEDURE
Pulse test duration (tp = 20 ms):
V selection:
●
●
●
●
for Bidirectional devices = Switch K is closed
for Unidirectional devices = Switch K is open
Device with V < 200 V V = 250 V , R1 = 140
OUT
BO OUT RMS
➔ Ω
Device with V > 200 V V = 480 V , R2 = 240
BO OUT RMS
➔ Ω
R
-V
P
V
BAT
= - 48 V
Surge generator
D.U.T.
TEST PROCEDURE
1/ Adjust the current level at the IH value by short circuiting the AK of the D.U.T.
2/ Fire the D.U.T. with a surge current ➔ I
10 A, 10/1000 µs.
3/ The D.U.T. will come back off-state within 50 ms maximum.
PP
This is a GO-NOGO test which allows to confirm the holding current (I ) level in a
functional test circuit.
H