B1101CA
| Model | B1101CA |
| Description | SIDACtor devices |
| PDF file | Total 212 pages (File size: 2M) |
| Chip Manufacturer | TECCOR |
Secondary Protection
Secondary Protection
Secondary protectors (stand alone units or integrated into strip protectors and UPSs) are
adjunct devices used to enhance the protection level of customer premise equipment
(CPE). Due to the inadequate level of protection designed into CPE, secondary protectors
often are required to prevent premature failure of equipment exposed to environmental
hazards (Figure 3.38).
Primary
Protector
Telephone
Network
Tip
P
Ring
Network
Interface
Customer
Premise Equipment
Line
Impedance
S
Fax/Modem
Secondary
Protector
Phone
Figure 3.38
CPE Secondary Protection
Protection Requirements
Secondary protectors should be able to withstand overvoltages that can exceed 800 V and
surge currents up to 100 A. Figure 3.39 illustrates a
SIDACtor
device selected because the
associated peak pulse current (I
PP
) is sufficient to withstand the lightning immunity tests of
TIA-968 (formerly known as FCC Part 68) without the additional use of series line
impedance. Likewise, Figure 3.39 illustrates a fuse selected because the amps
2
time (I
2
t)
rating is sufficient to withstand the lightning immunity tests of TIA-968, but low enough to
pass UL power cross conditions.
F1250T
Tip
P3203AB
or
P3203AC
To CPE
Equipment
Ring
F1250T
Figure 3.39
CPE Protection
© 2002 Teccor Electronics
SIDACtor
®
Data Book and Design Guide
3 - 31
http://www.teccor.com
+1 972-580-7777
Reference Designs
