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參數(shù)資料
| 型號： | CLP200M-TR |
| 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(shù)： | 6/21頁 |
| 文件大?。?/td> | 360K |
| 代理商： | CLP200M-TR |
CLP200M
6/21
RINGS
R sense
Rp
1
2
Overvoltage
reference
(+/- 215 V)
Overvoltage
detector
Overcurrent
detector
OR
Overvoltage
reference
(+/- 215 V)
Overvoltage
detector
Overcurrent
detector
OR
TIPL
TIPS
RINGL
FS
GND
SW3 SW1
SW4 SW2
R sense
1
2
Rp
Fuse
Fuse
TIP
RING
VB1
VB2
I
external reference supplies, V
b1
and V
b2
(see fig.5b).
.
Fig. 5b :
Method to adjust the reference voltage
.
R sense
Rp
1
2
Overvoltage
reference
(+/- 215 V)
Overvoltage
detector
Overcurrent
detector
OR
TIPL
TIPS
FS
SW3 SW1
Fuse
TIP
GND
-Vbat
voltage
reference
I
LG
V
LG
I
LG
V
A2
LG
4
5
6
V
REF1
-V
REF2
2.4 Speech mode
Fig. 6 :
Switching by current during speech mode
.
In speech mode (Ring relay in position 1), the pro-
tection is provided by the combination of both
CLP200M and the external voltage reference de-
vice.
In normal conditions, the working point of this cir-
cuit is located in region 4 of
A2
curve : the
CLP200M is idle.
When a surge occurs on the line, the external volt-
age reference device clamps at GND or -V
bat
re-
spectively for positive and negative surges.
This generates a current which is detected by
R
SENSE
andcausestheprotectiontoact:thelineis
short-circuited to GND.
The operating point moves to region 5 for positive
surges or region 6 for negative surges.
Once the surge current falls below the switch-
ing-off current I
SWOFF
, the CLP200M returns to its
initial state (region 4).
Furthermore, the CLP200M switches when an
overvoltage, either positive or negative, occurs ei-
ther :
I
simultaneously on both TIP and RING lines ver-
sus GND.
I
between TIP and RING.
I
on TIP (or RING) versus GND.
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