TISP7125F3, TISP7150F3, TISP7180F3, TISP7240F3, TISP7260F3,
TISP7290F3, TISP7320F3, TISP7350F3, TISP7380F3
TRIPLE BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
MARCH 1994 - REVISED MARCH 2000
typical circuits
TIP
WIRE
F1a
R1a
Th3
Th1
GDTa
GDTb
PROTECTED
EQUIPMENT
Th2
F1b
R1b
AI7XBP
RING
WIRE
TISP7xxxF3
Figure 36. PROTECTION MODULE
R1a
Th3
SIGNAL
Th1
Th2
R1b
AI7XBM
TISP7150F3
D.C.
Figure 37. ISDN PROTECTION
OVER-
CURRENT
PROTECTION
SLIC
PROTECTION
RING/TEST
PROTECTION
TEST
RELAY
RING
RELAY
SLIC
RELAY
TIP
WIRE
S3a
R1a
Th4
Th3
S1a
S2a
COORDIN-
ATION
RESISTANCE
Th1
Th2
SLIC
Th5
R1b
RING
WIRE
S3b
TISP7xxxF3
TISP6xxxx,
TISPPBLx,
½TISP6NTP2
S1b
S2b
VBAT
C1
220 nF
TEST
EQUIP-
MENT
RING
GENERATOR
AI7XBN
Figure 38. LINE CARD RING/TEST PROTECTION
P R O D U C T
I N F O R M A T I O N
20
POINN [ POWER INNOVATIONS LTD ]
