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參數資料
| 型號： | TPP |
| 英文描述： | OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE - (ASD) |
| 中文描述： | 過壓和過流保護的電信線路保護- （ASD）的 |
| 文件頁數： | 4/7頁 |
| 文件大小： | 273K |
| 代理商： | TPP |
TPP25011
4/7
REFERENCE TEST CIRCUIT 1 :
FUNCTIONAL HOLDING CURRENT (I
H
) TEST CIRCUIT 2 = GO - NOGO TEST
2
static
relay.
R1
140
R2
240
D.U.T
VBO
measure
IBO
measure
tp = 20ms
K
Transformer
220V/800V
5A
Auto
Transformer
220V/2A
Vout
R
- V
P
V
BAT
= - 48 V
Surge generator
D.U.T.
TEST PROCEDURE :
I
Pulse Test duration (tp = 20ms):
- For Bidirectional devices = Switch K is closed
- For Unidirectional devices = Switch K is open.
I
V
OUT
Selection
- Device with V
BO
<
200 Volt
- V
OUT
= 250 V
RMS
, R
1
= 140
.
- Device with V
BO
200 Volt
- V
OUT
= 480 V
RMS
, R
2
= 240
.
This is a GO-NOGO Test which allows to confirm the holding current (I
H
) level in a functional
test circuit.
TEST PROCEDURE :
I
1) Adjust the current level at the I
H
value by short circuiting the AK of the D.U.T.
2) Fire the D.U.T with a surge Current : Ipp = 10A , 10/1000
μ
s.
3) The D.U.T will come back off-state within 50 ms max.
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