P1200S Teccor Electronics, P1200S Datasheet - Page 152

• Manufacturer Part Number: P1200S
• Description: solid state crowbar devices
• Manufacturer: Teccor Electronics

UL 497A
Table 4.18 UL 497A Overvoltage Test
Notes:
1. Apply Tests L1, L2, and L5 between Tip and Ground or Ring and Ground.
2. Apply Tests L3 and L4 simultaneously from both Tip and Ring to Ground.
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[phone]
Test
L1
L2
L3
L4
L5
overvoltage protection device
the breakdown voltage of the
200 V rms or just below
Performance Tests
The following key performance tests relate to overvoltage protection of the secondary
protectors:
1. Impulse Voltage Measurement Test — Secondary protectors must break down within
2. Breakdown Voltage Measurement Test — Secondary protectors must break down within
3. Overvoltage Test — Secondary protectors must limit current and extinguish or open the
The overvoltage test is used to determine the effects on secondary protectors and is shown
in Table 4.18. Test connections are shown in Figure 4.11.
Test Compliance
Compliance with the overvoltage test is determined by meeting the following criteria:
• Cheesecloth indicator may not be either charred or ignited
• Wiring simulator (1.6 A Type MDQ fuse or 26 AWG line cord) may not be interrupted
• Protector meets the applicable dielectric voltage withstand requirements after the
Voltage
(V
600
600
600
240
±25% of the manufacturer’s breakdown rating when tested in each polarity with a rate of
voltage rise of 100 V/µs, ±10%. Note that the manufacturer may assign separate
breakdown voltage ratings for the Breakdown Voltage Measurement Test. This
requirement only applies to secondary protectors that connect between Tip and Ring of
the telephone loop.
±25% of the manufacturer’s breakdown rating when tested in each polarity with a rate of
voltage rise no greater than 2000 V/s. The secondary protector is to be mounted in
accordance with the manufacturer’s installation instructions and then subjected to the
test circuit shown in Figure 4.10. This requirement applies only to secondary protectors
connected between Tip and Ring or Tip/Ring and Ground of the telephone loop.
telephone loop without loss of its overvoltage protector, indication of fire risk, or electric
shock. Upon completion of this test, samples must comply with the Dielectric Voltage-
withstand Test.
completion of the overvoltage tests
RMS
)
2.2 A or just below the interrupt
value of the current interrupting
2.2, 1, 0.5, 0.25
4 - 28
Current
device
(A)
40
24
7
SIDACtor
30 min at each
current level
30 min
30 min
Time
1.5 s
5 s
®
Data Book and Design Guide
© 2002 Teccor Electronics
(Note 1, Figure 4.11)
(Note 1, Figure 4.11)
(Note 2, Figure 4.11)
(Note 2, Figure 4.11)
(Note 1, Figure 4.11)
Connection