Electrical Tests - Siemens siprotec 7SA6 User Manual

Time
Synchronization
Interface

10.1.5 Electrical Tests

Specifications
Insulation Tests
7SA6 Manual
C53000-G1176-C133-1
Profibus LWL
– Connector Type
for flush mounted case
for surface mounted case
– Transmission speed
recommended:
– Optical wavelength
– Laser class 1 acc. EN 60825–1/ –2
– Permissible optical signal attenuation max. 8 dB, for glass fibre 62.5/125 µm
– Channel distance
– Signal type
– Connection for flush mounted case
for surface mounted case
– Nominal signal voltages
– Signal level and burden:
5 V
U 6.0 V
IHigh
1.0 V for I
U = 0.25 mA 1.4 V
ILow ILow
I 4.5 mA to 9.4 mA
IHigh
890 Ω
for U
R = 4 V
I I
640 Ω
for U
= 6 V
I
Standards:
Standards:
– High voltage test (routine test)
all circuits except power supply,
ST–connector
single-ended ring / double-ended ring
acc. to ordered version
rear panel, mounting location "B"
on the case bottom
up to 1.5 MBd
> 500 kBd
λ = 820 nm
using glass fibre 50/125 µm or
using glass fibre 62.5/125 µm
max. 1.5 km (0.93 miles)
DCF77/IRIG B-Signal
rear panel, mounting location "A"
9-pin DSUB socket
at the terminal on the case bottom
optional 5 V, 12 V or 24 V
Nominal signal input voltage
12 V
15.8 V
for I
= 0.25 mA 1.9 V
ILow
4.5 mA to 9.3 mA
1930 Ω
for U
= 8.7 V
I
1700 Ω
for U
= 15.8 V
I
IEC 60255 (Product standards)
ANSI/IEEE C37.90.0, C37.90.0.1,
C37.90.0.2
DIN 57 435 Part 303
See also standards for individual functions
IEC 60255–5 and 60870–2–1
2.5 kV (rms), 50 Hz
Technical Data
24 V
31 V
for I
= 0.25 mA
ILow
4.5 mA to 8.7 mA
3780 Ω
for U
= 17 V
I
3560 Ω
for U
= 31 V
I
10-7