SIEMENS
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Siemens IK PI · 2015
Industrial Remote Communication
Accessories for remote networks
LTOP overvoltage protection
7
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Technical specifications
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Ordering data
Article No.
Article No.
6NH9821-0BC11/6NH9821-0BC12
Product-type designation
LTOP overvoltage protection
Transmission paths
Private non-coil-loaded or coil-loaded trunk lines
Transmission ratio
1 : 1; ± 5% (e.g. 600/600 ohms in voice band)
Transfer range
300 Hz ... 35 kHz
Frequency-dependent attenuation
Attenuation [dB]
Frequency [Hz]
Transmission rate [bps]
MD2
MD3
0.2
1 300 ... 3 300
1 200
2 400
all
1.0
20 800 ... 30 600
9 600
19 200
Insulation resistance
> 2 000 MOhms
Test voltage
4 kV, 50 Hz, 10 sec
Impulse withstand voltage
6 kV/2 J acc. to EN 60 099-1
Rated discharge current i
sn
(8/20 μs)
5 kA
Output voltage limit at i
sn
approx. 15 V
Trunk line connection
Screw terminals
Cross-section 0.2 – 4 mm
2
with rigid cores
Cross-section 0.2 – 2.5 mm
2
with flexible cores
Modem connection
Screw terminals (wire cross-section see trunk line connection)
or RJ12 socket for Western connector
Installation location
As near as possible to where the cable enters the building
Perm. ambient conditions
• Operating temperature
0 °C ... +60 °C
• Transport/storage temperature
-40 °C ... +70 °C
• Relative humidity
Max. 95% at +25 °C
Construction
• Dimensions (W x H x D) in mm
90 x 75 x 110 mm
• Weight
- LTOP1
300 g
- LTOP2
320 g
- OPM
10 g
Degree of protection
IP20
Installation
DIN rail TS35 (35 mm; EN 50 022)
LTOP 1 overvoltage protection
6NH9821-0BC11
Single line transformer,
with one OPM overvoltage protec-
tion module for use at the start
or end of a 2-wire line
LTOP 2 overvoltage protection
6NH9821-0BC12
2-way line transformer with two
overvoltage protection modules
(OPM) for use at the beginning
or at the end of a 4-wire cable or at
a 2-wire grading point.
Accessories
OPM
6NH9821-0BB00
Overvoltage protection module
for LTOP1 and LTOP2, plug-in
(pack of 4)
© Siemens AG 2014