TEST PROCEDURE :

Pulse Test duration (tp = 20ms):

- For Bidirectional devices = Switch K is closed

- For Unidirectional devices = Switch K is open.

< 200 Volt

Ω.

≥ 200 Volt

Ω.

test circuit.

TEST PROCEDURE :

2) Fire the D.U.T with a surge Current : Ipp = 10A , 10/1000

µs.

3) The D.U.T will come back off-state within 50 ms max.

static

relay.

R1

R2

240

140

D.U.T

V BO

measure

IBO

measure

tp = 20ms

K

Transformer

220V/800V

5A

Auto

Transformer

220V/2A

Vout

R

Surge generator

D.U.T.

SMTPA xxx

3/5