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參數(shù)資料
| 型號： | 485ELC |
| 廠商： | PROTEK DEVICES |
| 元件分類： | 保護電路 |
| 英文描述： | HIGH SPEED ETHERNET DATA LINE PROTECTOR |
| 中文描述： | TELECOM, SURGE PROTECTION CIRCUIT, DMA10 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大?。?/td> | 83K |
| 代理商： | 485ELC |
485ELC
2
05039.R3 11/03
www.protekdevices.com
DEVICE CHARACTERISTICS
INSTALLATION INSTRUCTIONS
This product should be located as close as possible to the equipment
being protected. A low impedance grounding system is important to
maintain a low clamping voltage between the line-to-ground connection.
There are five (5) terminals on both the line and equipment side of the
485ELC - four data line terminals and two ground terminals. Both ground
terminals, as shown on the label, are connected internally. A single
ground connection is sufficient. However, it is recommended that both
ground connections be used for a lower impedance path to earth. This
connection can be made through the green AC power ground wire or a
known earth ground. The ground wire should be #14 stranded wire.
Incoming data lines are cut or disconnected from the equipment to insert
the 485ELC product. The line side of the terminals are to be connected
to data lines from the outside world or lines that carry the transient
threats into the equipment to be protected. The equipment side of the
terminals are to be connected to the equipment to be protected . The
location of the product should be such that these wires are as short as
possible. A #18 or 20 gauge wire can be used for these connections.
ProTek’s data line protector is designed with a short circuit failure mode
to give maximum protection. A fuse, fussable link, or circuit breaker is
recommended for each data/signal line on the input (line) side of the
protector for those applications that require an open circuit failure mode.
Caution: A low DC resistance ground may not be indicative of a good
lightning ground. Lightning contains a broad spectrum of frequencies -
up to 1 MHz. A low impedance path to ground at the transient frequen-
cies is necessary. A ground strap is recommended or a #6 AWG
stranded wire. For wire lengths over 1.5 meters, there may be some
excessive line to earth potential under severe thunderstorm conditions.
For these applications, an additional protector may be necessary at the
equipment interface.
MAXIMUM RATINGS @ 25°C
ELECTRICAL CHARACTERISTICS @ 25°C
±7V
250mA
20kV
10kA/Wire
40kA/Protector
-55°C to 100°C
< 1 nanosecond
MAXIMUM
CLAMPING
VOLTAGE
8/20s
@500A
V
C
±VOLTS
MAXIMUM
LINETHRUPUT
RESISTANCE
R
OHMS
MAXIMUM
LEAKAGE
CURRENT
@ 7 V
OP
I
D
A
MAXIMUM
CAPACITANCE
@ 0-7V, 1 MHz
C
pF
12
20
10
25
Peak Operatiing Line Voltage (V
OP)
Operating Line Current (I
O)
Maximum Transient Voltage
Maximum Transient Current
(8/20s waveform)
Operating & Storage Temperature
Response Time
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