Emerson unidrive m, Руководство по установке

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Safety information Introduction Product information
System
configuration
Mechanical
Installation
Electrical
Installation
Technical data UL Information
92
Unidrive M / Unidrive HS Modular Installation Guide
Issue Number: 5
6.2 AC supply requirements
Voltage:
200 V drive: 200 V to 240 V ±10%
400 V drive: 380 V to 480 V ±10%
575 V drive: 500V to 575 V ±10%
690 V drive: 500 V to 690 V ±10%
Number of phases: 3
Maximum supply imbalance: 2 % negative phase sequence (equivalent to 3% voltage imbalance between phases).
Frequency range: 45 to 66 Hz
The maximum supply symmetrical fault current must be limited to 100 kA (also required for UL compliance).
6.2.1 Supply types
Drives rated for supply voltage up to 575 V are suitable for use with any supply type, i.e. TN-S, TN-C-S, TT, IT, with grounding at any potential, i.e.
neutral, centre or corner ("grounded-delta").
Grounded delta supplies >575 V are not permitted.
Drives are suitable for use on supplies of installation category III and lower, according to IEC60664-1. This means they may be connected
permanently to the supply at its origin in a building, but for outdoor installation additional over-voltage suppression (transient voltage surge
suppression) must be provided to reduce category IV to category III.
A ground fault in the supply has no effect in any case. If the motor must continue to run with a ground fault in its own circuit then an input isolating
transformer must be provided and if an EMC filter is required it must be located in the primary circuit.
Unusual hazards can occur on ungrounded supplies with more than one source, for example on ships. Contact the supplier of the drive for more information.
Table 6-1 Behavior of the drive in the event of a ground (earth) fault with an IT supply
* Please note that the internal filter is not removable on size 9E/T, 10E/T and 11E/T.
Operation with IT (ungrounded) supplies:
Special attention is required when using internal or external EMC filters with ungrounded supplies, because in the event of a ground
(earth) fault in the motor circuit the drive may not trip and the filter could be over-stressed. In this case, either the filter must not be used
(removed) or additional independent motor ground fault protection must be provided, refer to Table 6-1. For details of ground fault
protection contact the supplier of the drive.
Drive size Internal filter only External filter (with internal)
(All sizes)
May not trip – precautions required:
•
Remove the EMC filter*
• Use ground leakage relay
May not trip – precautions required:
•
Do not use EMC filter
• Use ground leakage relay
WARNING