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7.4 Specifications for 1+1 Configuration
Specifications are same than single module with the exceptions:
Input Rating
Units
All models
Permissible input variation
Hz
±
2 fixed
Output Paralleled Inverters Ratings
Units
All Models
Maximum unbalance in current outputs
%
±
5% of single module rated current
Maximum load allowable to commutate from bypass
to inverters
%
200% of single module rated current
Maximum load allowable during overload
%
300% of single module rated current
Maximum voltage unbalance to maintain parallel
&
±
10% of output rated voltage
Maximum velocity variation of output frequency
Hz/sec
0.1 fixed
Frequency stability (not synchronized)
%
0.1% when input supply frequency is outside the
synchronizing range.
7400M - Series UPS User Manual
Single Module and 1+N Parallel System
