P6002A Teccor Electronics, Inc., P6002A Datasheet - Page 119

• Manufacturer Part Number: P6002A
• Description: solid state crowbar devices
• Manufacturer: Teccor Electronics, Inc.

Secondary Protection
Figure 3.38 CPE Secondary Protection
© 2002 Teccor Electronics
SIDACtor
®
Data Book and Design Guide
Tip
Ring
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).
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
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
rating is sufficient to withstand the lightning immunity tests of TIA-968, but low enough to
pass UL power cross conditions.
Figure 3.39 CPE Protection
Ring
Tip
Protector
Interface
Network
Primary
P
F1250T
F1250T
Impedance
Line
PP
3 - 31
P3203AB
P3203AC
) is sufficient to withstand the lightning immunity tests of
or
Secondary
Protector
S
Premise Equipment
Customer
Phone
Fax/Modem
http://www.teccor.com
Secondary Protection
To CPE
Equipment
[phone]
2
time (I
2
t)