
13-2
W650 Wind Generator Protection System
GEK-113032A
13.1 COMMUNICATIONS
13 FREQUENTLY ASKED QUESTIONS
13
Q12
May I use URPC to program the relay?
A12
Only oscillography records may be viewed with URPC once downloaded to a file using the ENERVISTA 650 Setup
software.
Q13
May I connect URs and W650s to the same Ethernet?
A13
Yes, either in cable as in fiber, or even mix them.
Q14
How do I connect with fiber 10-BASE-FL UR relays with 100-BASE-FX W650 relays?
A14
Take into account that an UR is never connected directly to a W650 (neither two UR nor two W650 with each other)
but they are always connected through a hub or switch. The hub or switch where the URs are connected must be
10-BASE-FL and the hub or switch for the W650 must be 100-BASE-FX.
Q15
How do I connect with cable 10_BASE-T UR relays with 10/100-BASE-TX W650 relays?
A15
The answer to this question is as described before but also in this case there is an advantage added, because the
hub 10-BASE-TX port is able to understand a 10-BASE-T port. This means that a hub 10-BASE-T port may be
connected to an UR or a W650, and a hub 10/100-BASE-TX port may be connected either to an UR or W650.
Q16
What happens with fiber optic connectors compatibility, because the hub that I have has a different
connector to the one of the W650, although both are 100-BASE-FX?
A16
Just buy fiber cables with the appropriate male connectors. For the UR and W650 side we need the same
connectors, ST type, for the hub side, the correspondent ones. And in what concerns to the fiber type, it is used the
same for 10 as for 100, it is the 50/125 or 62.5/125 multimode, this last one allows longer distances.
Q17What is the difference between a hub and a switch?
A17
In a repeater type hub (shared hub), one unit talks and the rest listen. If all the units are talking at the same time
there may be collisions in the messages, what may produce certain communication delays.
The switch (switched hub) has very powerful processors and a lot of memory and it is much more expensive than
the hub. It directs messages to the proper destination avoiding collisions and allowing a much more efficient
communication.
Q18
Why do we have 10/100 compatibility for cable but not for fiber?
A18
The cable has some advantages that the fiber does not have, and it is that the signal attenuation in short and
medium distances, is worthless and this is truth for low and high frequency signals. By the contrary, the light in one
fiber optic is highly attenuated, being much worse in case of high frequencies than in the low ones. The 10-BASE-FL
fiber transmission is performed in a wavelength of 850nm, what allows a less expensive electronic than the 1300 nm
used in 100-BASE-FX fiber transmission. Using, in both cases, the same glass multimode fiber type, the attenuation
to 1300 nm is lower than the 850 nm ones, this way the greater attenuation of the 100 Mbits is compensated. There
is another fiber standard, the 100-BASE-SX, which uses 850 nm to 100 Mbits, being compatible with the 10-BASE-
FL one, although it sacrifices the maximum distance to 300 m. Nowadays, this standard has not had success among
Ethernet equipment manufacturers and suppliers.
Содержание Multilin W650
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Страница 10: ...VIII W650 Wind Generator Protection System GEK 113032A TABLE OF CONTENTS ...
Страница 30: ...1 20 W650 Wind Generator Protection System GEK 113032A 1 4 W650 HARDWARE 1 GETTING STARTED 1 ...
Страница 140: ...4 72 W650 Wind Generator Protection System GEK 113032A 4 3 WEB SERVER 4 HUMAN INTERFACES 4 ...
Страница 360: ...7 48 W650 Wind Generator Protection System GEK 113032A 7 2 IEC 61850 PROFILE FOR W650 7 IEC 61850 PROTOCOL 7 ...
Страница 368: ...8 8 W650 Wind Generator Protection System GEK 113032A 8 4 OBJECT DICTIONARY 8 W650 CANOPEN PROFILE 8 ...
Страница 406: ...11 22 W650 Wind Generator Protection System GEK 113032A 11 15 RECLOSER 79 11 COMMISSIONING 11 ...
Страница 422: ...13 6 W650 Wind Generator Protection System GEK 113032A 13 4 RELAY CONFIGURATION 13 FREQUENTLY ASKED QUESTIONS 13 ...
Страница 446: ...A 22 W650 Wind Generator Protection System GEK 113032A A 1 LOGIC OPERANDS APPENDIXA A ...
Страница 596: ...D 8 W650 Wind Generator Protection System GEK 113032A D 5 IEC 60870 5 104 POINT LIST APPENDIXD D ...
Страница 622: ...F 2 W650 Wind Generator Protection System GEK 113032A F 1 GE MULTILIN WARRANTY APPENDIXF F ...