GE Multilin
G60 Generator Protection System
3-31
3 HARDWARE
3.3 DIRECT INPUT/OUTPUT COMMUNICATIONS
3
3.3.4 G.703 INTERFACE
a) DESCRIPTION
The following figure shows the 64K ITU G.703 co-directional interface configuration.
The G.703 module is fixed at 64 kbps. The
SETTINGS
Ö
PRODUCT SETUP
ÖØ
DIRECT I/O
ÖØ
DIRECT I/O DATA RATE
setting is not applicable to this module.
AWG 24 twisted shielded pair is recommended for external connections, with the shield grounded only at one end. Con-
necting the shield to pin X1a or X6a grounds the shield since these pins are internally connected to ground. Thus, if pin X1a
or X6a is used, do not ground at the other end. This interface module is protected by surge suppression devices.
Figure 3–33: G.703 INTERFACE CONFIGURATION
The following figure shows the typical pin interconnection between two G.703 interfaces. For the actual physical arrange-
ment of these pins, see the
Rear terminal assignments
section earlier in this chapter. All pin interconnections are to be
maintained for a connection to a multiplexer.
Figure 3–34: TYPICAL PIN INTERCONNECTION BETWEEN TWO G.703 INTERFACES
Pin nomenclature may differ from one manufacturer to another. Therefore, it is not uncommon to see pin-
outs numbered TxA, TxB, RxA and RxB. In such cases, it can be assumed that “A” is equivalent to “+” and
“B” is equivalent to “–”.
b) G.703 SELECTION SWITCH PROCEDURES
1.
Remove the G.703 module (7R or 7S). The ejector/inserter clips located at the top and at the bottom of each module,
must be pulled simultaneously in order to release the module for removal. Before performing this action,
control
power must be removed from the relay
. The original location of the module should be recorded to help ensure that
the same or replacement module is inserted into the correct slot.
2.
Remove the module cover screw.
3.
Remove the top cover by sliding it towards the rear and then lift it upwards.
4.
Set the timing selection switches (channel 1, channel 2) to the desired timing modes.
5.
Replace the top cover and the cover screw.
NOTE
842773A2.CDR
X
X
X
X
X
X
X
X
X
X
X
X
8a
8b
7S
Rx +
Tx +
Shield
Tx –
Shield
Rx –
Tx –
Rx +
Tx +
Rx –
Int
er-r
elay
communications
2b
6a
7a
1b
1a
3a
6b
7b
2a
3b
G.703
channel 2
G.703
channel 1
Surge
Surge
831727A3.CDR
X
X
X
X
X
X
X
X
X
X
X
X
8a
8b
7S
Rx +
Tx +
Shld.
Tx -
Shld.
Rx -
Tx -
Rx +
Tx +
Rx -
COMM.
2b
6a
7a
1b
1a
3a
6b
7b
2a
3b
G.703
CHANNEL 2
G.703
CHANNEL 1
SURGE
SURGE
X
X
X
X
X
X
X
X
X
X
X
X
8a
8b
7S
Rx +
Tx +
Shld.
Tx -
Shld.
Rx -
Tx -
Rx +
Tx +
Rx -
COMM.
2b
6a
7a
1b
1a
3a
6b
7b
2a
3b
G.703
CHANNEL 2
G.703
CHANNEL 1
SURGE
SURGE
NOTE
Summary of Contents for G60 UR Series
Page 2: ......
Page 4: ......
Page 12: ...xii G60 Generator Protection System GE Multilin TABLE OF CONTENTS ...
Page 32: ...1 20 G60 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 132: ...4 30 G60 Generator Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 392: ...5 260 G60 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 418: ...6 26 G60 Generator Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 482: ...A 12 G60 Generator Protection System GE Multilin A 1 PARAMETER LISTS APPENDIXA A ...
Page 604: ...D 10 G60 Generator Protection System GE Multilin D 1 IEC 60870 5 104 APPENDIXD D ...
Page 616: ...E 12 G60 Generator Protection System GE Multilin E 2 DNP POINT LISTS APPENDIXE E ...
Page 634: ...x G60 Generator Protection System GE Multilin INDEX ...