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Product(s)

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Product(s)

Obsolete

Product(s)

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APPLICATION NOTE

9/13

Test

S1

S2

S3

S4

T to generator, R to ground

(condition A1 of table 4-1)

Closed

Open

Open

Closed

R to generator, T to ground

(condition A2 of table 4-1)

Open

Closed

Closed

Open

T to generator, R to generator

simultaneously

(condition A3 of table 4-1)

Closed

Open

Closed

Open

Table 6: Application of lightning and AC power fault test voltages (table 4-2 of GR-1089-CORE).

2. First level lightning surge:

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

switches on within 250ns and withstands the 500A given by the BELLCORE 2/10

µs generator.

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.