MaxPower Corp Gamatronic Power+ M50 - Manuel (Page 20)

Gamatronic Electronic Industries Ltd.
4 POWER+ 3x208 V, User Guide, Release 2.3
1.1 System Controller
The POWER+ system controller has three purposes:

To allow the user to manage and control the UPS.
 To monitor the parameters of all sections of the POWER+ via the control panel.
 To collect and summarize data from all sections of the UPS.

Communicate with external computers for data transfer and operation.
The POWER+ can work without the system controller but with reduced functionality.
1.2 UPS Module (10 kVA / 8 kW)
1
The UPS module is the core of the POWER+, which consists of from one to ten identical
modules in parallel depending on capacity requirements.
Each module includes a 3-phase charger with PFC 2 and a 3-phase PWM inverter connected to
batteries by a classic dc link. Each module is plug-in and weighs a mere 20 lbs (9 kg).
1.3 Static Switch (ST/SW) Module
The centralized hybrid Static Switch enables an automatic transfer of the load from the output
of the inverters to an alternate source whenever the inverter can no longer supply power to the
load. The static switch can transfer high currents at high speed.
1.4 Battery
The POWER+ battery bank is used as a backup in the event that the utility ac input fails.
For systems from 10 kVA through 20 kVA, the batteries may be housed internally (on battery
trays); however, for systems from 30 kVA through 100 kVA, or for sites where a longer backup
duration is required, the batteries are housed in an external cabinet next to the POWER+
cabinet.
For POWER+ units equipped with internal batteries (battery trays), do not use excessive force
when sliding the battery tray into place. The battery tray must be slid into place gently to avoid
damaging the electrical connection on its rear panel.
Batteries are charged by the rectifier, which supplies both the inverter and the battery charger.
1
The kVA and kW per module given here is for 3-3 configuration.
2
PFC is a feature included that reduces the amount of generated reactive power. Reactive power
operates at right angles to true power and energizes the magnetic field. Reactive power has no real
value for an electronic device, but electric companies charge for both true and reactive power resulting in
unnecessary charges.
In power factor correction, the power factor (represented as "k") is the ratio of true power (kWatts)
divided by apparent power (kVA). The power factor value is between 0.0 and 1.00. If the power factor is
above 0.8, the device is using power efficiently. A standard power supply has a power factor of 0.70-
0.75, and a power supply with PFC has a power factor of 0.95-0.99.