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3.2
Ac and dc fuses
Ac and dc fuses are located on the rear panel of the UPS, above the terminals.
See Figure 21 on page 26.
3.3
Ac input/output main terminals
The main input and output terminals are located at the lower rear of the unit. The terminals are used to
connect the ac input and bypass inputs, the battery, and the ac output. See Figure 21 on page 26.
3.4
System controller
The POWER + system controller has multiple 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.
•
To communicate with external computers for data transfer and operation.
The POWER + can work without the system controller but with reduced functionality.
3.5
UPS module (10 kVA / 8 kW)
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
by a classic dc link. Each module is plug-in and weighs a mere 22 lb. (10 Kg), approximately.
3.6
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
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 reactive 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.
POWER + RM100, 3
208 V, User Guide, 1.3
X
Gamatronic Electronic Industries Ltd.
1
and a 3-phase PWM inverter connected to batteries
7
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