Installing/Mounting; Installation Conditions - Siemens Sinamics PM250 Hardware Installation Manual
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Installing/mounting
4.1
Installation conditions
When installing the Power Modules carefully observe the conditions listed below in order to
guarantee reliable, continuous and disturbance-free operation.
● The Power Module is designed for installation in a control cabinet.
● The Power Module is certified for use in environments with degree of pollution 2 without
condensation; i.e. in environments where no conductive pollution/dirt occurs.
Condensation is not permissible.
● The Power Modules fulfill degree of protection IP20.
● Permissible cross-sections for terminals:
torques (Page 55) .
● EMC-compliant installation:
Inverters 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 inverter.
Fuse types and characteristic values:
● Only use copper cables rated for 75 °C.
● The integrated semiconductor short-circuit protection does not provide cable protection.
On the system side, provide cable protection in conformance with NEC or CEC, Part 1
and the local regulations.
● The inverter features internal motor overload protection corresponding to UL508C. The
protection threshold is 115 % of the inverter full load current. When commissioning, you
can adapt the motor overload protection using parameter p0640.
● The inverter is suitable for operation on line supplies 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.
PM250 Power Module
Hardware Installation Manual, 01/2016, A5E36265179B-AA
Cable cross-sections and tightening
EMC-compliant installation (Page 38).
Power-dependent data (Page 58).
4
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