MGE UPS Systems Comet 100 kVA, Инструкция по установке и эксплуатации

Страница: 13 / 66

Auxiliary cabinet – performs the voltage conversion for the
input AC and/or bypass AC using step-up and/or step-down
transformers.
Battery Cabinet – The battery cabinet 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 tolerances. The internal Battery
Charger maintains the charge of the battery system. The DC
output voltage of the charger is temperature regulated to
ensure an optimal charge voltage. If a customer supplied
battery system is to be used, an external battery charger may
be necessary.
The standard battery system is housed in a separate
enclosure. For systems where additional back-up time is
required, up to two (2) additional battery cabinets are
available.
A standard battery cabinet is available in an adjacent
configuration or a stand-alone configuration. Adjacent
battery cabinets are attached to the right side of the UPS
using c-brackets provided with the cabinet. Stand-alone
battery cabinets are remote from the UPS. Refer to the
battery cabinet installation drawing for more details.
An external battery system can also be supplied by the
customer.
Figure 1-2, and 1-3 show single-line diagrams of a typical
UPS system installation. During normal operation, utility
power (Main Input) is supplied to the UPS Rectifier where it
is converted to DC voltage. The Inverter converts the DC
voltage from the Rectifier to three-phase regulated AC volt-
age, which supplies the critical load. During power failure
conditions, the Inverter is supplied by the stored energy in
the batteries, and the load is powered continuously with no
disruption.
The 40-150 kVA Comet UPS systems are rated for various
input and output voltages (see Table 1-1). When different
input and/or output voltages are specified, optional
transformers provide step up/down functions as required.
The Comet UPS system is listed for safety by Underwriters
Laboratories, Inc. (UL) under UL Standard 1778 - Uninter-
ruptible Power Systems; and also listed as Underwriters Lab-
oratories (CUL) under Canadian Standards Association
(CSA) standard C22.107.
86-160310-00 1 — 3 Introduction
Installation and Users Manual