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PMM Plus / PMM Ultra
Home > Products > Three Phase UPS > PMM Plus / PMM Ultra
 
Integrated Static Transfer Switch with Distribution System (30 - 300 kVA)

Dual input distribution with automatic source selection
-the no downtime distribution solution.


No downtime! No exceptions! — is the result of the PMM Plus and PMM Ultra critical power distribution system. At the heart of the distribution system is MGE‘s industry leading digital static transfer switch. Fed by two independent AC power sources (a preferred and alternate source), the transfer switch instantly detects power quality deficiencies and rapidly and seamlessly transfers to an alternate input source, without interruption to the critical load. This uninterrupted access to dual independent power sources offers unmatched reliability, availability and serviceability the way no other solution can. Coupled with MGE‘s high K-factor transformer distribution system the PMM Plus and PMM Ultra offer complete isolation, harmonic distortion elimination, power conditioning and distribution for up to 252 breakers in a single system. Ideal for any application where downtime is unacceptable. 

Available Configurations (PMM Plus / PMM Ultra)
The PMM Plus dual input distribution system accepts two independent AC input sources feeding to an integrated Epsilon Static Transfer Switch. If the preferred source power quality deteriorates, the STS instantly (<4 ms) transfers to the alternate input source, avoiding any interruption to the critical load. The output power is conditioned and stepped down to distribution voltage via a K-20, double shielded isolation transformer, feeding up to six panel boards with 252 breakers.
For “ultra” reliability the PMM Ultra configuration feeds each AC input source into dedicated isolation transformers upstream of the Epsilon Static Transfer Switch. Dedicated transformers allow all components to be maintained without interrupting power to the critical load, maximizing reliability, availability and maintainability.
 
Critical Bus Synchronization Module
Assured synchronization between both STS sources for 100% availability of both sources

Transferring to an out of phase source can severely damage inductive loads and risks tripping breakers. Such out of phase conditions between sources  limits  the availability of the alternate power source. Using MGE’s Critical Bus Synchronization (CBS) module, primary and alternate power sources will always be in phase and available for immediate use, maximizing system reliability.

 


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