6.2. DERATING PARALLEL REGENS
Operating regens in parallel is useful when large regenerative energies are present
and need to be dissipated in high power applications. Currently, the 100A and 300A
frame sizes are able to be used in parallel. The combined units must have their peak
currents derated by 10% each. The derating for parallel systems is shown in Table
6-5.
Two units are the maximum number that can be safely operated in parallel. Units
with different current ratings should not be in parallel together on the same DC bus.
Table 6-5: Derating Regens in Parallel
6.3. WATT LOSS
Tables 6-1 thru 6-4 list the maximum continuous watt loss generated by each of the
listed regen units. When installing regen units in an additional enclosure,
consideration should be given to internal temperature rise. The watt loss rating in
these tables is based upon the maximum continuous regen capability of each unit.
Applications that do not utilize the full capacity may be calculated by using the
percentage of loading for the individual unit.
The M3645 is more than 98% efficient when fully loaded.
6.4. CERTIFICATIONS AND ROHS
M3645 models with 30A, 50A, and 100A ratings are listed under UL508C, file number
E204386.
The M3645 line regen is suitable for use on a circuit capable of delivering not more
than 65 kA RMS symmetrical amperes at the rated voltage, when protected by the
recommended AC fuses. DC fusing is not required.
All M3645 models are in compliance with Directive 2011/65/EU of the European
Parliament and of the Council of 8 June 2011 on the restrictions of the use of certain
hazardous substances in electrical and electronics equipment (RoHS Directives).
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