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IMPORTANT: Equipment is factory set to operate at 120VAC for Line to
Neutral and 240VAC for Line to Line units. Please read
installation procedure to configure for Line to Neutral and
240VAC for Line to Line units other configurations.
2.0 Scope
This section describes installation of the inverters, including receiving, handling, and storage procedures, prerequi-
sites to the installation, installation procedures, and start-up procedures.
2.1 Receiving
Before accepting the shipment from the freight carrier, inspect the exterior surfaces of all shipping containers or
packaging used, and the equipment, for damage that may have occurred during transit. If the shipping containers
or equipment shows evidence of damage, note the damage on the receiving document (bill of lading) prior to sign-
ing for receipt of equipment.
ALL CLAIMS FOR SHIPPING DAMAGE MUST BE FILED DIRECTLY WITH THE CARRIER. Replacements for
damaged components should be ordered through MGE UPS SYSTEMS.
2.1.1 Handling
IMPORTANT: A spread bar must be used, to avoid bending the bolts or side
panels, if the S4 Inverter is to be lifted from the top using the
eye-bolts.
The equipment can be lifted from the top, using the eye-bolts; however, a spreader bar must be used to avoid bend-
ing the bolts or the side panels. The equipment may also be handled using a forklift or pallet mover.
2.1.2 Storage
If the equipment is to be stored prior to installation, it should be stored in a cool, dry, well-ventilated location that is
protected from rain, splashing water, chemical agents, etc. The equipment should be covered with a tarpaulin or
plastic wrapper to protect it against dust, dirt, paint, or other foreign materials.
2.2 Prerequisites to Installation
An efficient installation depends on careful planning and site preparation. Installation of the equipment must be han-
dled by skilled technicians and electricians familiar with the special requirements of high-voltage electrical equip-
ment. The installation must comply with the requirements of the National Electrical Code (ANSI/NFPA 70, latest
issue) and local codes as applicable.
We strongly recommend contracting MGE for system start-up. Do not allow unqualified personnel to handle, install,
or operate MGE UPS SYSTEMS static inverter systems.
NOTE: The inverter can be mounted close to a rear wall, because there
is no rear access to the unit. All input DC, output AC, and input
AC wiring to the inverter enters through the top or left side of the
rack assembly. Service to the inverter rack is through the front.
If a maintenance bypass unit or junction box is installed, rear
access is required for this unit.
Owner’s Manual
Installation & Operation
Installation and Operation
page 2 — 1