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參數(shù)資料
| 型號(hào)： | P1602Z |
| 英文描述： | solid state crowbar devices |
| 中文描述： | 固態(tài)撬棍設(shè)備 |
| 文件頁(yè)數(shù)： | 130/212頁(yè) |
| 文件大?。?/td> | 1877K |
| 代理商： | P1602Z |
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GR 1089–Core
http://www.teccor.com
+1 972-580-7777
4 - 6
2002 Teccor Electronics
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
generator.
resistor placed externally to the surge
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
(V
PK
)
±5000
Waveform
(μs)
Surge Current
(A)
Repetitions Each
Polarity
Test Connections
(Table 4.1, Figure 4.1)
1
2x10
500
1
B
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