SMTPA Series
Telecommunication Protection
Ratings AND Charactieristic Curves
TEST CIRCUIT 1 FOR DYNAMIC I
BO
AND V
BO
PARAMETERS:
100V/μs, di/dt<10A/μs, Ipp=50A
2Ω
U
10μF
45Ω
66Ω47Ω
83Ω
0.36nF
46
μ
H
KEY TEK 'SYSTEM 2' GENERATOR WITH PN2461 MODULE
1kV/μs, di/dt<10A/μs, Ipp=10A
26μH
U
60μF
12Ω
250Ω
47Ω
46μH
KEY TEK 'SYSTEM 2' GENERATOR WITH PN2461 MODULE
TEST CIRCUIT 2 FOR I
BO
AND V
BO
PARAMETERS:
tp=20ms
R1
140
R2
240
220V 50Hz
k
V
BO
measurement
Vout
I
BO
measurement
D.U.T
1/4
TEST PROCEDURE :
Pulse Test duration (tp = 20ms):
- For Bidirectional devices = Sw itch K is closed
- For Unidirectional devices = Sw itch K is open.
V
OUT
Selection
- Device w ith V
BO
< 200 Volt
- V
OUT
= 250 V
RMS
, R1 = 140
Ω.
- Device w ith V
BO
200 Volt
- V
OUT
= 480 V
RMS
, R2 = 240Ω.
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