TFortis SG-Cam User manual

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Operating Manual
SG-Cam
Surge protection unit
for video cameras
Version 1

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!
Grounding of the switch is obligatory.
!
It is recommended to check the integrity of
lightning protection device at the beginning and the
end of the storm season and immediately after the
storm.

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Contents
Contents.....................................................................................................3
1. Purpose..................................................................................................4
2. Description .............................................................................................5
3. Technical parameters.............................................................................7
4. Operating conditions...............................................................................8
5. Installation..............................................................................................8
5.1. Installation on the wall or pole..........................................................8
5.2. Pulling cables through the cable gland.............................................9
5.3. Cable connection ...........................................................................11
6. Supply scope........................................................................................12
7. Manufacturer's warranty .......................................................................13

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1. Purpose
TFortis SG-Cam is a lightning protection device designed to protect
cameras through the Ethernet port from strong interferences induced by
powerful lightning discharges.
It is recommended to use TFortis SG-Cam in conjunction with a lightning
protection device for TFortis SG-Switches .
Figure 1. Typical application scheme
Features
High level of protection against lightning interferences
All-weather performance (IP67 housing)
Operation in a wide range of temperatures (from -55°C to 80°C).
The camera cable is located inside the lightning protection housing
A bracket for mounting on the pole or on the wall
Supports Fast/Gigabit Ethernet
Supports PoE/PoE+ (IEEE802.3af/at), including PoE 60W.
Convenient visual control of the integrity of components

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2. Description
Figure 2-1. Appearance of TFortis SG-Cam
SG-Cam device has a metal enclosure protected from dust and moisture
according to IP67 . The device has a cable gland with a rubber sleeve for
three cables:
Ethernet cable from the switch,
Ethernet cable of the video camera
grounding cable.
There is enough space inside SG-Cam to accommodate the excess cable
coming from the video camera (Figure 2-2).
Application of a single large cable gland with a dedicated rubber sleeve
allows the RJ45 socket of the camera to be inserted into the lightning
protection device without cutting off the camera socket, thus retaining the
warranty of the camera manufacturer. Instruction for connection is available
in the Installation section of this document.

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Figure 2-2. Device interior
Figure 2-3. Example of connection

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3. Technical parameters
General features
Power supply
IEEE802.3af/at (up to 60W)
Data transfer type
10/100/1000Base-T
Degree of protection from dust and
moisture
IP67
Operating temperature, °C
- 55...+80
Dimensions, mm
220x120x90
Weight, kg
<2
Characteristics according to GOST IEC 61643-21 - 2014
Protected pairs
(1-2), (3-6), (4-5), (7-8)
(1,2-3,6), (4,5-7,8)
Nominal operating voltage, DC
Uо
6V
48V
Maximum continuous operating
voltage, DC
Uс
9V
57V
Nominal current (direct)
IL
600mA+600mA
line-ground
С2 Nominal discharge current (8/20)
In
1 kA
(C2 –2 kV/1 kA) Protection voltage
level at In
Up
<450 V
C3 Protection voltage level at 1 kV/μs
Up
< 600 V
Actuation time
tA
< 100 ns
Stray capacitance
С
< 1 pF
line-line
(1-2), (3-6), (4-5), (7-8)
(1,2-3,6), (4,5-7,8)
С2 Nominal discharge current (8/20)
In
200 A
200 A
(В2 - 1 kV/25 A) Protection voltage
level at In
Up
< 15 V
< 75 V
C3 Protection voltage level at 1 kV/μs
Up
< 20 V
< 85 V
Actuation time
tA
<1 ns
<1 ns
Stray capacitance
С
< 25 pF
< 25 pF
Bandwidth
250 MHz
Input losses
< 3 dB (up to 250 MHz)
Crosstalk at the transmitting end
< 35 dB (up to 250 MHz)

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4. Operating conditions
TFortis SG-Cam is designed for 24/7 outdoor operation at the ambient
temperatures from minus 55C to plus 80C.
It is recommended to check the integrity of lightning protection device at
the end of the storm season and immediately after the storm.
5. Installation
5.1. Installation on the wall or pole
Use M5 bolts from the supply kit to screw the brackets to the device
housing (Figure 5-1).
Figure 5-1. Brackets
Install the device at the minimum possible distance from the video camera.
Use bandage tape to fix the device on the pole. For wall mounting, use a
special fastener (not included in the scope of supply).

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WARNING! Drilling of the housing will lead to loss of device integrity and,
as a result, loss of product warranty.
5.2. Pulling cables through the cable gland
Cut the hole in the rubber sleeve
Pull the cables through the cut

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Assemble the cable gland according to the Figure below
Tighten the cable gland

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5.3. Cable connection
Connect the cable coming from the switch to RJ45 «SWITCH» port.
Connect the cable coming from the video camera to RJ45 «CAMERA»
switch. If the cable from the video camera ends with a plug, make an
Ethernet cable of a minimum length and use it to connect the video
camera.
Connect the grounding cable to «GROUND» terminal. For proper operation
of the lightning protection, grounding should not exceed 4 Ohm.

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Figure 5.3-1. Connection scheme
It is recommended to use a 4-pair twisted pair, at least category 5.
Figure 5.3-2. Separation of the Ethernet cable.
6. Supply scope

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Name
Qty
Note
1
TFortis SG-Сam
1
2
Bracket
2
3
M5 screw
4
4
Cable gland MG32
1
5
Rubber sleeve
1
6
Product certificate
1
7
Packaging
1
7. Manufacturer's warranty
The warranty period for the switch is 36 months from the date of sale. Only
a complete switch is accepted for servicing and repair.
Warranty shall not apply in the following cases:
if the warranty period has expired;
if manufacturer's marking with the serial number on the housing is
missing or if the serial number has been changed, removed or is
illegible;
if there are internal of external mechanical damages (chipping,
cracking, deformation, damaged power supply wires, cracking or
splitting of the terminals), signs of treatment with aggressive
chemicals or fluids, severe contamination, insects presence or signs
of insects presence;
in case of improper connection and operation of the switch or if power
supply parameters do not meet the requirements specified in the
operating manual;
if the switch was damaged as a result of force majeure, due to the
actions of third parties or other reasons beyond manufacturer's
control.