Grounding; Typical Ltc Connection - ABB TCC300 User Manual

Section 8
Installation
8.8
8.9
566
Digital
Tapchanger
Contr ol
(DB9P)
DCD
1
RX
2
TX
3
DTR
4
SGND
5
DSR
6
RT S 7
CTS
8
unused
9
GUID-71E8A76E-98B3-4F33-9AB0-0C2471A0963C V1 EN
Figure 443: Null Modem Cable 9-Pin to 25-Pin

Grounding

Ground the control by connecting a suitably sized wire from the ground stud on the bottom
of the control case, to a solid connection to ground. Do not rely on mounting screws for
grounding.

Typical LTC connection

Figure 444 illustrates an example of connections for a control with an LTC Transformer
Control adapter panel. This example does not cover all situations. Motor Power and
1VAC388793-MB A
PC
(DB25S)
CG
1
2
TX
3
RX
RT S
4
CTS
5
DSR
6
SGND
7
DCD
8
9
•
•
•
DTR
•
•
•
TCC300
User Manual