Connection Overview - Siemens SINAMICS G120 Hardware Installation Manual

5.3

Connection overview

The converters are available with or without integrated line filter (category C2). There are
external filters (category C1) for increased EMC requirements for frame size FSC.
Converters for systems in the United States / Canada (UL/cUL)
• For configurations in conformance with UL/cUL, use the UL/cUL-approved fuses, Class J or
Siemens 3NE1 semiconductor fuses, which are specified in this manual.
If you use semiconductor fuses as branch protection, then you must install them in the same
electrical cabinet as the converter.
Fuse types and characteristic values:
• Only use copper cables rated for 75 °C.
• The integrated semiconductor short-circuit protection does not provide line protection. On
the line side, provide line protection in conformance with NEC or CEC, Part 1 and the local
regulations.
• The converter features internal motor overload protection corresponding to UL508C. The
protection threshold is 115% of the converter full load current. When commissioning, you
can adapt the motor overload protection using parameter p0640.
• The converter is suitable for operation in networks whose short-circuit current at 3 AC 480 V
is not higher than 65 kA (symmetrical) if you connect upstream fuses Class J or
semiconductor fuses (JFHR2). Semiconductor fuses JFHR2 have not been released for frame
size FSC.
Additional requirements for CSA compliance:
Install the converter with an external suppression device with the following properties:
• Surge protection device - Recognized Component XUHT2
• Rated voltage 480 V (phase with respect to ground), 480 V (phase to phase)
PM250 Power Module
Hardware Installation Manual, 04/2021, A5E36265179B-AB
Line filter (Page 69)
Power-dependent data (Page 58)
Connection
5.3 Connection overview
39