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參數資料
| 型號： | TSI |
| 英文描述： | TERMINAL SET INTERFACE PROTECTION AND DIODE BRIDGE |
| 中文描述： | Set接口端子保護和二極管橋 |
| 文件頁數： | 5/9頁 |
| 文件大小： | 160K |
| 代理商： | TSI |
TSIxxB1
5/9
This test simulates the induction phenomena that
can happen between telecom lines and AC mains
lines (fig. 4).
TEST # 2
AC POWER INDUCTION TEST
Fig. 4 :
AC power induction test circuit
Part #1
test conditions :
V
RMS
= 240 V
R = 600
t = 0.2 s
Part #2
test conditions :
V
RMS
= 600 V
R = 600
t = 0.2 s
Fig. 5 :
Voltage at the + and - terminations of the
TSI200B1, and current through it
while test part 1 is applied.
The TSIxxB1 withstand the AC power induction
test in both cases.
This test simulates the direct contact between the
telecom lines and the AC mains lines.
The AC power contact test consists in applying
240V
RMS
through a 10
PTC during 15 minutes
long on the device under test. The CCITT K17
recommendation specifies an internal generator
impedanceallowing10A
RMS
wheninshortcircuit.
The behavior of the TSI200B1 with respect to this
surge is given in figure 6.
TEST #3
AC POWER CONTACT TEST
Fig. 6 :
Voltage at the TSI200B1 + & - terminations
and the current through it.
The figure 6 shows that after 250ms there is no
current anymore flowing through the TSI200B1
device. This is due to the action of the serial PTC
that limits the current through the line. This PTC is
mandatory for this test. It can also be replaced by a
fuse or any other serial protection that “opens” the
line loop under AC contact test.
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