3.0 INSTALLATION
Patton's Model 552 is easy to install and should give you years of
trouble-free service. Here are a few simple instructions to help you get
things hooked up right.
1. Unplug (disconnect) the existing connection between the network
cable and the equipment’s I/O port.
2. Install the Model 552 between the incoming network cable and the
protected equipment using the 6 inch (15.2cm.) modular patch
cable (supplied). Place the surge protector as close as possible to
the device being protected.
NOTE:To ensure proper operation of the Model 552, make sure
that your equipment is connected to the protected side of the
Model 552. See Figure 1 below.
NOTE:The Model 552-E1 CX has two pairs of BNC jacks that
connect one to one through the device. See Figure 2 below.
3. Connect the braided ground strap directly to a chassis ground
connection on the protected device. If you are not sure where to
locate a chassis ground connection on your equipment, consult the
equipment's user manual or contact the manufacturer. Correct
ground connection is critical for proper operation of the Model 552.
Output to protected
equipment
Input from
network
Connection to
frame ground
UNPROTECTED
PROTECTED
Figure 1. How to Connect the Model 552
Figure 2. Model 552-E1CX One to One Connection
TX and
RX from
network
TX and RX to
protected
equipment
APPENDIX A
MODEL 552 SPECIFICATIONS
General
Series Resistance:
0.340 Ohms
In Line Fuse Rating:
250V, 3/4A, 2.95 (A
2
sec) Nominal Melting
Point
Approvals:
UL497A Telco Specification (except E1
versions)
CE (EMC Directive/EN 50082-1)
Connectors:
Two female RJ-45 or 4 BNC jacks
Model 552-DDS
Pins Protected:
Pins 1, 2, 7, 8
Clamping Voltage:
62 Volts in 500 nsec
Surge Capacity:
1500 Watts for 1 msec;
400A with an 8/20 µsec pulse
Protection Mode:
Common Mode Pins 1, 2, 7, 8 to shielding
braid
Differential Mode Pins 1, 2, 7, 8
Model 552-D2
Pins Protected:
Pins 4, 5 on the RJ-45 Interface;
Pins 3, 4 on the RJ-11 Interface
Clamping Voltage:
310 Volts in 500 nsec
Surge Capacity:
1500 Watts for 1 msec;
250A with an 8/20 µsec pulse
Protection Mode:
Common Mode Pins 4, 5 to shielding
braid
Differential Mode Pins 4, 5
Model 552-D4
Pins Protected:
Pins 3, 4, 5, 6 on the RJ-45 Interface
Pins 2, 3, 4, 5 on the RJ-11 Interface
Clamping Voltage:
310 Volts in 500 nsec
Surge Capacity:
1500 Watts for 1 msec;
250A with an 8/20 µsec pulse
Protection Mode:
Common Mode Pins 3, 4, 5, 6 to shielding
braid
Differential Mode Pins 3, 4, 5, 6
