P6002ACMC datasheet(130/212 Pages) TECCOR

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GR 1089–Core

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SIDACtor® Data Book and Design Guide

Second Level Lightning Surge Test

The Second Level Lightning Surge Test, presented in Table 4.5, does not require the EUT

to pass operationally, but GR 1089 does require that the EUT not become a fire,

fragmentation, or electrical safety hazard. This is referred to as passing “non-operationally.”

Notes:

• Primary protectors are removed.

• For EUT containing secondary voltage limiting and current limiting protectors, tests are to be performed at the indicated voltage(s)

and repeated at a reduced voltage and current just below the operating threshold of the secondary protectors.

• Alternatively, a surge generator of 1.2x50 µs open-circuit voltage waveform (8x20 µs short-circuit current waveform) per

IEEE C62.41 may be used. The current shall be limited by the inclusion of a series 8

W resistor placed externally to the surge

generator.

AC Power Fault Tests

Power companies and telephone operating companies often share telephone poles and

trenches; therefore, network equipment is often subjected to the voltages seen on power

lines. If direct contact between the telephone line and the primary power line occurs, the

operating company’s network equipment may see as much as 600 V rms for five seconds,

by which time the power company’s power system should clear itself. If direct contact

occurs with the secondary power line, voltages will be limited to 277 V rms; however, these

voltages may be seen indefinitely because the resultant current may be within the operating

range of the power system, and the power system will not reset itself.

Another risk involved with power lines is indirect contact. Because of the large magnetic

fields created by the currents in the power lines, large voltages may be induced upon phone

lines via electro-magnetic coupling. In this instance voltages should be limited to

1000 V peak and 600 V rms using primary protectors, while the current will be limited by the

current-carrying capacity of the 24-gauge wire.

Table 4.5 Second Level Lightning Surge Test

Test

Surge

Voltage

(VPK)

Waveform

(µs)

Surge Current

(A)

Repetitions Each

Polarity

Test Connections

(Table 4.1, Figure 4.1)

±5000

2x10

500

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