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Installation Manual
2.1.1 Shared System Major Internal Components
Input Filter An input harmonic current filter is standard.
Input Transformers The single-module is equipped with isolation XFRMS on both the input and output.
The transformers provide battery isolation or voltage step-up or step-down as
required for the particular installation.
Rectifier/Battery Charger The rectifier/battery charger converts the AC input voltage from the utility source into
a DC voltage, supplying the inverter and regulating the charge of the battery system.
A capacitor bank filters the DC voltage.
Inverter The inverter chops the DC voltage supplied from either the rectifier/battery charger
or the battery system into a three-phase AC voltage. An AC output filter is used to
achieve a computer-grade sinewave output voltage waveform, with a total harmonic
distortion of less than 2% under linear-load conditions.
Static Switch An output static switch is provided to connect the ups output power to the SSC.
Inverter Transformer During normal operation, the inverter transformer provides complete electrical
isolation between the UPS output to the attached load.
2.1.2 Shared System Options
This section describes options available for the EPS 7000
series 800
UPS. Some configurations do not support some
options. Most options must be specified at the time of equipment order; some options can be installed in the field.
Contact your MGE dealer for complete information.
Maintenance bypass For the UPS modules, maintenance bypass is provided by the SSC, allowing any or
all attached UPS modules to be taken off-line while the SSC supports the attached
load from its bypass source. As an option, the SSC can be equipped with its own
maintenance bypass, allowing the SSC as well as any/all attached UPS modules to
be serviced while the load is supported by the maintenance bypass AC input source.
Active RS-232/RS-485 A communications port is available that allows the UPS module or the SSC to be
monitored from a remote terminal or computer. For detailed information on the
communication features, contact your MGE dealer.
Main Battery Disconnect The battery disconnect provides isolation of the battery circuit from the UPS and
also provides overload protection for the battery circuit. It is housed in a separate
enclosure and can be floor mounted against a wall.
Battery System The battery system stores energy for use by the inverter. The stored energy is
utilized in the event that the AC input power from the utility source fails, or falls
outside of acceptable tolerance.
The battery system may be a customer-supplied battery installation.
Description