MGE UPS Systems 3.5 to 21 kVA N+1 Manuale Utente

Note:  For Line to Neutral units continue to section 2.11, page 2—17.

For safety and proper operation of the unit, including maximum attenuation of electrical noise, suitable grounding is

required.  A separate grounding electrode conductor should be connected from the safety ground (GND) terminal to

a nearby grounding electrode, and should be sized per National Electrical Code Article 250-94.  The grounding elec-

trode should be grounded structural metal, a metal water pipe, or a suitable ground rod (National Electrical Code

250-26).  The grounding electrode should be as near as possible to the unit.  The S4 will accommodate two 1/0

gauge wire.  Customer provides grounding system.

Move the receiver cabinet to its intended location, using one of the suggested handling methods.  After it is in its

final position, remove the blank panels from the front of the receiver cabinet.  Blank panels are supplied with the

unit so as to prevent damage to the unit during shipment.  Remove these blank panels, but do not discard them.

Remove top cover panel on the receiver’s static switch (cover of the panel with two fans) for access to the wiring

area.  The connections to be made are the DC input connections, load connections, AC input connections, and

optional remote alarm connections.  The connection terminals and busbars are located at the static switch area,

which is in the center of the receiver cabinet.  For safety, the DC safety ground connection should be connected

first, then DC positive (+) connection made next, then the DC negative (-) last. 

7 kVA

14 kVA

21 kVA

240VAC

40A

80A

125A

Normal:  -48VDC

Operating Range: -39.5 VDC to -57VDC