GR 1089–Core
First Level AC Power Fault Criteria
Table 4.6 presents test conditions for the First Level AC Power Fault Test. The EUT is
required to pass operationally.
Table 4.6 First Level AC Power Fault Test
Short Circuit
Current per
Conductor
(A)
0.33
0.17
1A at 600 V
Applied Voltage,
60 Hz
Primary
Test Connections
Test
1 (Note 1)
2 (Note 1)
3 (Note 1)
(VRMS
)
Duration
15 min
15 min
Protectors
(Table 4.1, Figure 4.1)
50
100
200, 400, 600
Removed
Removed
Removed
A
A
A
60 applications,
1 s each
4 (Note 4)
5 (Note 2)
1000
1
60 applications,
1 s each
In place
B
N/A
N/A
60 applications,
Removed
N/A
5 s each
6 (Note 3)
7 (Note 3)
8 (Note 3)
9 (Note 3)
600
600
600
0.5
2.2
3
30 s
2 s
1 s
Removed
Removed
Removed
In place
A
A
A
B
1000
5
0.5 s
Notes:
1. 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.
2. Test 5 simulates a high impedance induction fault. For specific information, please contact Teccor Electronics.
3. Test conditions 6 through 9 are objective, not mandatory, requirements.
4. Sufficient time may be allowed between applications to preclude thermal accumulation.
Second Level AC Power Fault Criteria
Test conditions for the Second Level AC Power Fault Test are dependent on whether the
EUT is intended for customer premises equipment or non-customer premises equipment. In
both instances, although the EUT is not required to pass operationally, it may not become a
fire, fragmentation, or electrical safety hazard.
Second Level AC Power Fault Criteria for Non-customer Premises
Equipment
Table 4.7 presents test conditions for non-customer premises equipment. (Note that test
conditions 1, 3, and 4 may be omitted if the EUT has previously met UL 60950.) See
Figure 4.1 for test connection appearances.
© 2002 Teccor Electronics
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+1 972-580-7777
®
SIDACtor Data Book and Design Guide
TECCOR [ TECCOR ELECTRONICS ]
