Hardware Modifications; General - Siemens siprotec SJ62 User Manual

3.1.2

Hardware Modifications

3.1.2.1

General

Auxiliary Voltage
Live Status Contact
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
The closest standard value of 39 kΩ is selected; the power is:
Hardware modifications concerning, for instance, nominal currents, the control voltage
for binary inputs or termination of serial interfaces might be necessary. Follow the pro-
cedure described in this section, whenever hardware modifications are done.
Since construction of modules varies from device to device, detailed information con-
cerning hardware modifications on devices 7SJ62, 7SJ63 and 7SJ64 is specified sep-
arately.
There are different power supply voltage ranges for the auxiliary voltage (refer to the
Ordering Information in Appendix A.1). The power supplies of the variants for DC
60/110/125 V and DC 110/125/220 V, AC 115/230 V are largely interchangeable by
modifying the position of the jumpers. The assignment of these jumpers to the nominal
voltage ranges and their spatial arrangement on the PCB for devices 7SJ62, 7SJ63
and 7SJ64 are described separately in the following sections. Location and ratings of
the miniature fuse and the buffer battery are also shown. When the relays are deliv-
ered, these jumpers are set according to the name-plate sticker. Generally, they need
not be altered.
The live contacts of devices 7SJ62/63/64 are changeover contacts. With devices
7SJ63 and 7SJ64 either the NC contact or the NO contact is be connected to two
device connections via a plug-in jumper (X40). The assignment of the plug-in jumper
to the contact mode and the spatial arrangement of the jumper are described for
devices 7SJ63 and 7SJ64 in the following sections.
3.1 Mounting and Connections
370