Introduction to the SINAUT ST7 system
2.6 LTOP overvoltage protection modules
SINAUT ST7 Station control system - System Manual
74
System Manual, 05/2007, C79000-G8976-C178-06
2.6.2
Technical specifications of the LTOP overvoltage protection module
LTOP
Transmission paths
Private transmission lines with or without loading coils
Transmission ratio
1 : 1; ± 5 % (e.g. 600/600 ohms in the voice band)
Transmission range
300 Hz to 35 kHz
Transmission speed [bps]
Attenuation
[dB]
Frequency
[Hz]
MD100
MD124
MD2
MD3
0.2
1300 ... 3300
1200
1200
2400
1200
2400
All
0.8
5200 ... 8400
4800
0.9
10,400 ... 16,800
9600
Frequency-dependent attenuation
1.0
20,800 ... 30,600
19,200
9600
19,200
Insulation resistance
> 2000 Mohms
Test voltage
4 kV, 50 Hz, 10 s
Surge withstand capability
6 kV/2 J to EN 60 099-1
Normal discharge current i
sn
(8/20 µs)
5 kA
Output voltage limitation at i
sn
Approx. 15 V
Telecontrol line attachment
Screw terminals
Cross-section 0.2 – 4 mm
2
with rigid cores
Cross-section 0.2 – 2.5 mm
2
with flexible cores
Modem attachment
Screw terminals (wire cross-section, see telecontrol line attachment) or RJ-
12 jack for Western plug
Installation location
As close as possible to where cable enters building
Permitted ambient conditions
•
Operating temperature
•
Transport/storage temperature
•
Relative humidity
•
0 °C t60 °C
•
-40 °C t70 °C
•
Max. 95 % at +25 °C
Construction
•
Dimensions (W x H x D) in mm
•
Weight
•
90 x 75 x 110 mm
•
LTOP1: 300 g
•
LTOP2: 320 g
•
OPM: 10 g
Degree of protection
IP 20
Installation
DIN rail TS35 (35 mm; EN 50 022)