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Multiple Generator Utility Paralleling
The MGUP is a standard multiple generator emergency standby system with utility paralleling capabilities. The system may consist of 2 or up to 8 generators paralleled to a common bus and then paralleled to a single or multiple utility sources.
Emergency Standby Mode:
The master control will enable all the generators to start simultaneously and parallel on a first up first on basis. This system is also known as random access paralleling.
A system master control will monitor and control each generator's paralleling breaker as well as other breakers associated with the emergency system. The master control is the central control device that will provide load sharing between generators so that all generators carry proportionally, an equal amount of the total load on the emergency bus. The master control also provides automatic load shedding in the event of a generator failure to prevent the entire system from being overloaded. Another feature the master control performs is load demand. In the load demand mode master control will automatically shut off generators that are not required if the total load on the emergency bus is less than the total generating capacity.
On return to utility power the master control will automatically synchronize the generator bus to the utility source and perform a bumpless transfer of loads back to the utility.
The intelligent decisions made by the master control during the system operation are based on the program that is being executed in the programmable logic control (PLC). The PLC is the brain of the system and is programmed to meet the specific needs of the customer. The PLC is very a versatile device and can be modified in the field to meet the changing needs of the customer. The MGUM is configured in a modular fashion and therefore customers can easily add generators to their system as their needs grow.
Peakshaving:
The MGUP system can also be used by customers for peakshaving applications without interrupting power to their critical loads during the peakshaving process. The transfer of power between sources is seamless.
The MGUP can be designed to operate as:
- Utility paralleled in Isolated mode
- Utility paralleled in Import/Export mode
- Utility paralleled Base Load mode
The MGUP is available in the following sizes and enclosures:
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Voltage |
Ampere |
Enclosure |
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Up to 600V |
Up to 5000A |
NEMA 1 & 3R |
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5kV & 15kV |
1200A |
NEMA 1 & 3R |
Control Options Available:
- Open Transition Mode
- Peakshaving Mode
- Operator Interface Touchscreen with:
- System Oneline
- System Control
- Alarm Summary
- Event Logging with Date Stamp
- Trend Logging
- Utility & Generator Metering
Monitoring System:
This model can be equipped with web-TOUCH monitoring system that allow user to monitor the status and health of the system. More Information.....
Typical Oneline and Elevation Diagrams:
Typical for Low Voltage Application