Specifications
The Pentadyne flywheel is a short duration energy storage alternative that can supplement or completely eliminate the need for flooded/wet cell and VRLA lead-acid batteries in UPS applications. If used with UPS batteries, the Pentadyne flywheel serves as the first line of defense, isolating the redundant battery bank(s) from all cycling events. If used as the sole source of energy storage, the Pentadyne system vastly improves reliability, longevity, energy efficiency and uptime availability, in addition to changing downtime maintenance from many hours, several times per year to a single one-hour interval once every two years. That's the Pentadyne way to true reliability.
Pentadyne’s GTX system is compatible with several of the world’s leading brands of uninterruptible power supply (UPS) systems. It has the lowest maintenance needs and highest uptime availability of any UPS energy storage product on the market.
GTX Run Time In Seconds
Number of GTX Flywheels
|
UPS kVA Rating |
1 | 2 | 3 | 4 | 5 | 6 |
| 1000 | 12.5 | 17.7 | 22 | |||
| 750 | 12.5 | 19 | 24 | 30 | ||
| 625 | 16.8 | 23 | 30 | 35 | ||
| 500 | 12.5 | 22 | 30 | 37 | 44 | |
| 400 | 17.7 | 28 | 37 | 46 | 55 | |
| 300 | 24 | 37 | 49 | 62 | 75 | |
| 250 | 12.5 | 30 | 44 | 59 | ||
| 225 | 15.0 | 33 | 49 | 66 | ||
| 200 | 17.7 | 37 | 55 | |||
| 150 | 24 | 49 | 75 | |||
| 120 | 31 | 62 | ||||
| 100 | 37 | 75 | ||||
| 80 | 46 | |||||
| 60 | 62 |
Table Based on: .9 Power Factor, .95 UPS Efficiency, 80% Loaded, No walk in time
Pentadyne systems can be sized to the load instead of the UPS nameplate rating because as load grows, additional flywheels can be added…something not feasible with lead-acid batteries.
Cost Comparison
While a Pentadyne flywheel costs more than a monitored equivalent 5-minute VRLA battery cabinet, it eliminates all the maintenance and string replacement issues common to VRLA batteries. This cost savings pays generally pay for the system by what would have been the first battery replacement interval and saves about $150,000 per cabinet over the life of the Pentadyne flywheel. Much higher reliability at much lower cost.
Footprint Comparison
The floorspace needed by VRLA lead-acid battery cabinets for a 400-kVA UPS, including code-mandated access space — is nearly twice that of a similar capacity pair of Pentadyne flywheels (green). Compared to a one megawatt set of flooded wet cell lead-acid batteries, the flywheel footprint is nearly 80% smaller (orange).