CLP270M
Table 5: Test connection (table 4-1 of GR-1089-CORE).
Test
A
Two-wire interface
1. Tip to generator, Ring to ground
Four-wire interface
1. Each lead (T, R, T1, R1) to generator with
other three leads grounded
2. Ring to generator, Tip to ground
2. Tip and Ring to generator simultaneously, T1
and R1 to ground
3. Tip to generator, Ring to generator
simultaneously
B
Tip to generator, Ring to generator
simultaneously
3. T1 and R1 to generator simultaneously,
Tip and Ring to ground
T, R, T1, R1 to generator simultaneously
S1
Limiting
resistance
(IF specified) S3
Voltage
Source
Switch
S2
unit
under
test
S4
T
E
R
M
T
E
R
M
Test
Table 6: Application of lightning and AC power fault test voltages (table 4-2 of GR-1089-CORE).
Test
T to generator, R to ground
(condition A1 of table 4-1)
R to generator, T to ground
(condition A2 of table 4-1)
T to generator, R to generator
simultaneously
(condition A3 of table 4-1)
S1
Closed
Open
Closed
S2
Open
Closed
Open
S3
Open
Closed
Closed
S4
Closed
Open
Open
3.1. BELLCORE GR-1089-CORE requirements:
Tables 1 and 2 summarize the lighting surges required by the bellcore 1089.
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