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CLP270M Datasheet(PDF) 11 Page - STMicroelectronics

No. de Pieza. CLP270M
Descripción  OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE
Descarga  24 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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CLP270M Datasheet(HTML) 11 Page - STMicroelectronics

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CLP270M
11/24
2/10 µs
GENERATOR
+/- 2.5 kV
(500 A)
4
TIPL
TIPS
GND
1/2 CLP270M
I1
V1
Rsense
Rp
Fig. 10: Lightning simulation test.
Fig. 11: CLP270M response to a positive surge.
Fig. 12 : CLP270M response to a negative surge.
Tables 1 to 6 summarize the surge needs defined by Bellcore regarding both lightning and AC power fault.
In case of first level test, the equipment under test shall be operating after the surge. For the second level
tests, the equipment under test may be damaged, but no fire or electrical safety hazard may occur.
3.2. First level lightning surge:
3.2.1. ringing mode
Lightning phenomena are the most common surge causes. The purpose of this test is to check the
behavior of the CLP270M against these lightning strikes.
Figures 11 and 12 show that the remaining overvoltage does not exceed +/- 500 V. The CLP270M
2/10 µs
GENERATOR
+/- 5 kV
(500 A)
4
TIPL
TIPS
GND
1/2 CLP270M
I
V1
50
I2
SLIC
LCP1511D
-48V
V2
1
Rsense
Rp
Fig. 13: Lightning test in speech mode.


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