Siemens SINAMICS V20 Operating Instructions Manual page 39

Note
Requirements for United States/Canadian installations (UL/cUL)
For configurations in conformance with UL/cUL, use the UL/cUL approved fuses, circuit
breakers and Type E combination motor controllers (CMC). Refer to the Product Information
of Protective Devices for SINAMICS V20 Converter
(https://support.industry.siemens.com/cs/ww/en/ps/13208/man) for specific types of branch
circuit protection for each converter and corresponding Short-Circuit Current Rating (SCCR).
For each frame size, use 75 °C copper wire only.
This equipment is capable of providing internal motor overload protection according to
UL508C/UL61800-5-1. In order to comply with UL508C/UL61800-5-1, parameter P0610
must not be changed from its factory setting of 6.
For Canadian (cUL) installations the converter mains supply must be fitted with any external
recommended suppressor with the following features:
• Surge-protective devices; device shall be a Listed Surge-protective device (Category
code VZCA and VZCA7)
• Rated nominal voltage 480/277 VAC (for 400 V variants) or 240 VAC (for 230 V variants),
50/60 Hz, three phase (for 400 V variants) or single phase (for 230V variants)
• Clamping voltage VPR = 2000 V (for 400 V variants)/1000 V (for 230 V variants), IN = 3
kA min, MCOV = 508 VAC (for 400 V variants)/264 VAC (for 230V variants), short circuit
current rating (SCCR) = 40 kA
• Suitable for Type 1 or Type 2 SPD application
• Clamping shall be provided between phases and also between phase and ground
Danger to life caused by high leakage currents for an interrupted protective conductor
The converter components conduct a high leakage current via the protective conductor.
The earth leakage current of the SINAMICS V20 converter may exceed 3.5 mA AC.
Touching conductive parts when the protective conductor is interrupted can result in death
or serious injury.
A fixed earth connection or a multicore supply cable with connectors for industrial
applications according to IEC 60309 is required and the minimum size of the protective
earth conductor shall comply with the local safety regulations for high leakage current
equipment.
Danger to life due to fire spreading because of an unsuitable or improperly installed braking
resistor
Using an unsuitable or improperly installed braking resistor can cause fires and smoke to
develop. Fire and smoke development can cause severe personal injury or material
damage.
• Only use braking resistors that are approved for the converter.
• Install the braking resistor in accordance with regulations.
• Monitor the temperature of the braking resistor.
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
WARNING
WARNING
Electrical installation
4.1 Typical system connections
37