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Electrical connection
6.6 Connecting the converter
6.6
Connecting the converter
Increased winding temperature in the case of a fault/fire
Winding damage and failure of the motor can result in death and injury.
In the case of a fire/fault condition, the motors must be directly connected to the line supply
(DOL). The converter is only permissible in normal operation, and must be bypassed if a
fault condition or fire develops.
NOTICE
Excessively high supply voltage
Material damage can occur if the supply voltage is too high for the insulation system.
The machines can be operated at line voltages ≤ 500 V on SINAMICS G converters and
SINAMICS S converters (uncontrolled and controlled infeed) when maintaining the
permissible peak voltages.
The maximum permissible voltage rate of rise (gradient) is 9 kV/µs.
Û
phase-phase
Note
EMC
Please observe the section containing instructions on ensuring electromagnetic compatibility.
6.7
Final measures
Before closing the terminal box/terminal base of the machine enclosure, check the following:
● Establish the electrical connections in the terminal box in accordance with the details in
the sections above and tighten with the correct torque.
● Maintain air clearances between non-insulated parts:
≥ 5.5 mm up to 690 V, ≥ 8 mm up to 1000 V.
● Avoid protruding wire ends!
● In order not to damage the cable insulation, freely arrange the connecting cables.
● Connect the machine corresponding to the specified direction of rotation.
● Keep the inside of the terminal box clean and free from trimmed-off ends of wire.
● Ensure that all seals and sealing surfaces are undamaged and clean.
● Correctly and professionally close unused openings in the terminal boxes.
56
WARNING
≤ 1500 V; Û
phase-ground
≤ 1100 V
Operating Instructions, 03/2016, 5 610 80000 40 018
Smoke extraction motors
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